create dev channel

zeta/c/completed/1000.c

@@ -0,0 +1,15 @@
+#include<stdio.h>
+
+#define 정수 int
+#define 반환 return
+#define 출력 printf
+#define 입력 scanf
+#define 더하기 +
+
+정수 main() {
+    정수 에이, 비;
+    입력("%d %d", &에이, &비);
+    출력("%d\n", 에이 더하기 비);
+
+    반환 0;
+}

zeta/c/completed/10469.c

@@ -0,0 +1,54 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct {
+    int x, y;
+} Point;
+
+int main() {
+    Point queens[64];
+    int length = 0;
+    char temp[8];
+    Point temp_pos;
+    bool flag = true;
+    for (int i = 0; i < 8; i++) {
+        scanf("%s", temp);
+        for (int j = 0; j < 8; j++) {
+            if (temp[j] == '*') {
+                queens[length].x = i;
+                queens[length].y = j;
+                length++;
+            }
+        }
+    }
+
+    if (length != 8) flag = false;
+
+    Point a, b;
+
+    for (int i = 0; i < length; i++) {
+        if (flag == false) {
+            break;
+        }
+        a = queens[i];
+
+        for (int j = 0; j < i; j++) {
+            b = queens[j];
+            if (a.x == b.x) {
+                flag = false;
+                break;
+            } else if (a.y == b.y) {
+                flag = false;
+                break;
+            } else if (abs(a.x - b.x) == abs(a.y - b.y)) {
+                flag = false;
+                break;
+            }
+        }
+    }
+
+    flag ? printf("valid\n") : printf("invalid\n");
+
+    return 0;
+}

zeta/c/completed/10815.c

@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int comp(const void *a, const void *b) {
+    return *(int *) a - *(int *) b;
+}
+
+int is_in(int x, int *cards, int size) {
+    int begin = 0, end = size - 1, mid;
+    while (begin <= end) {
+        mid = (begin + end) / 2;
+        if (cards[mid] == x) {
+            return 1;
+        } else if (cards[mid] > x) {
+            end = mid - 1;
+        } else {
+            begin = mid + 1;
+        }
+    }
+    return 0;
+}
+
+int main() {
+    int N;
+    scanf("%d", &N);
+
+    int cards[N];
+    for (int i = 0; i < N; i++) {
+        scanf("%d", &cards[i]);
+    }
+
+    qsort(cards, N, sizeof(int), comp);
+
+    int M;
+    scanf("%d", &M);
+
+    int check[M];
+    for (int i = 0; i < M; i++) {
+        scanf("%d", &check[i]);
+    }
+
+    for (int i = 0; i < M - 1; i++) {
+        printf("%d ", is_in(check[i], cards, N));
+    }
+    printf("%d\n", is_in(check[M - 1], cards, N));
+
+
+    return 0;
+}

zeta/c/completed/10818.c

@@ -0,0 +1,18 @@
+#include<stdio.h>
+
+int main() {
+    int min=1e6; int max=-1e6;
+    int N; int a;
+    scanf("%d", &N);
+    
+    for (int i=0;i<N;i++) {
+        scanf("%d", &a);
+        if (a < min) {
+            min = a;
+        }
+        if (a > max){
+            max = a;
+        }
+    }
+    printf("%d %d", min, max);
+}

zeta/c/completed/10869.c

@@ -0,0 +1,11 @@
+#include<stdio.h>
+
+int main() {
+    int a; int b;
+    scanf("%d %d", &a, &b);
+    printf("%d\n", a+b);
+    printf("%d\n", a-b);
+    printf("%d\n", a*b);
+    printf("%d\n", a/b);
+    printf("%d\n", a%b);
+}

zeta/c/completed/11866.c

@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void solve(int *arr, int n, int k) {
+    int *temparr = calloc(n, sizeof(int));
+    if (temparr == NULL) {
+        fprintf(stderr, "Memory allocation failed\n");
+        return;
+    }
+    int cnt_longlive = 0;
+    int cnt;
+    int idx = -1;
+    for (int i = 0; i < n; i++) {
+        cnt = 0;
+        while (cnt < k) {
+            idx = (idx + 1) % n;
+            if (temparr[idx] == 0) {
+                cnt++;
+            }
+        }
+        temparr[idx] = 1;
+        arr[cnt_longlive++] = idx + 1;
+    }
+    free(temparr);
+}
+
+void print_result(int *arr, int n) {
+    printf("<");
+    for (int i = 0; i < n; i++) {
+        printf("%d", arr[i]);
+        if (i != n - 1) {
+            printf(", ");
+        }
+    }
+    printf(">\n");
+}
+
+int main() {
+    int n, k;
+
+    scanf("%d %d", &n, &k);
+
+    int *arr = calloc(n, sizeof(int));
+    if (arr == NULL) {
+        fprintf(stderr, "Memory allocation failed\n");
+        return 1;
+    }
+
+    solve(arr, n, k);
+    print_result(arr, n);
+    free(arr);
+    return 0;
+}

zeta/c/completed/14425.c

@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int STR_LEN = 501;
+
+int comp(const void *a, const void *b) {
+    return strcmp((char *) a, (char *) b);
+}
+
+int is_in(char *a, char (*S)[STR_LEN], int N) {
+    // binary search
+    int low = 0, high = N - 1;
+    while (low <= high) {
+        int mid = (low + high) / 2;
+
+        int k = (int) strcmp(a, S[mid]);
+        if (k == 0) return 1;
+        else if (k < 0)
+            high = mid - 1;
+        else if (k > 0)
+            low = mid + 1;
+    }
+    return 0;
+}
+
+int main() {
+    int N, M;
+
+    scanf("%d %d", &N, &M);
+
+    char S[N][STR_LEN];
+    char check[M][STR_LEN];
+
+    for (int i = 0; i < N; i++) {
+        scanf("%s", (S[i]));
+    }
+
+    for (int i = 0; i < M; i++) {
+        scanf("%s", (check[i]));
+    }
+
+    qsort(S, N, sizeof(char) * 501, comp);
+
+    int count = 0;
+    for (int i = 0; i < M; i++) {
+        count += is_in((check[i]), S, N);
+    }
+    printf("%d\n", count);
+    return 0;
+}

zeta/c/completed/14709.c

@@ -0,0 +1,50 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct IntPair {
+    int first;
+    int second;
+} IntPair;
+
+bool fox(int N, IntPair *pairs) {
+    bool _b13 = false;
+    bool _b14 = false;
+    bool _b34 = false;
+    for (int i = 0; i < N; i++) {
+        if (pairs[i].first == 2 || pairs[i].first == 5 || pairs[i].second == 2 || pairs[i].second == 5) return false;
+        if (pairs[i].first == 1) {
+            if (pairs[i].second == 3) {
+                _b13 = true;
+            } else if (pairs[i].second == 4) {
+                _b14 = true;
+            }
+        } else if (pairs[i].first == 3) {
+            if (pairs[i].second == 1) {
+                _b13 = true;
+            } else if (pairs[i].second == 4) {
+                _b34 = true;
+            }
+        } else if (pairs[i].first == 4) {
+            if (pairs[i].second == 1) {
+                _b14 = true;
+            } else if (pairs[i].second == 3) {
+                _b34 = true;
+            }
+        }
+    }
+    return _b13 && _b14 && _b34;
+}
+
+int main(void) {
+    int N;
+    scanf("%d", &N);
+    IntPair *pairs = (int *) calloc(N, sizeof(IntPair));
+    for (int i = 0; i < N; i++) {
+        scanf("%d %d", &pairs[i].first, &pairs[i].second);
+    }
+    bool isFox = fox(N, pairs);
+    isFox ? printf("Wa-pa-pa-pa-pa-pa-pow!\n") : printf("Woof-meow-tweet-squeek\n");
+    return 0;
+}

zeta/c/completed/16174.c

@@ -0,0 +1,102 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define MAX_SIZE 1000000
+
+typedef struct {
+    int x;
+    int y;
+} Position;
+
+Position stack[MAX_SIZE];
+int top = -1;
+
+void push(Position item) {
+    stack[++top] = item;
+}
+
+Position pop() {
+    return stack[top--];
+}
+
+int is_empty() {
+    if (top == -1) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+int main() {
+    int N;
+    scanf("%d", &N);
+    int **A = (int **) calloc(N, sizeof(int *));
+    A[0] = (int *) calloc(N * N, sizeof(int));
+    for (int i = 1; i < N; i++) {
+        A[i] = A[i - 1] + N;
+    }
+
+    for (int i = 0; i < N; i++) {
+        for (int j = 0; j < N; j++) {
+            scanf("%d", &A[i][j]);
+        }
+    }
+
+    int **V = (int **) calloc(N, sizeof(int *));
+    V[0] = (int *) calloc(N * N, sizeof(int));
+    for (int i = 1; i < N; i++) {
+        V[i] = V[i - 1] + N;
+    }
+
+    int flag = 0;
+
+    Position nowainit;
+    nowainit.x = 0;
+    nowainit.y = 0;
+
+    push(nowainit);
+
+    Position now;
+    Position target;
+    int amount;
+    while (!is_empty()) {
+        now = pop();
+        amount = A[now.x][now.y];
+        if (V[now.x][now.y]) {
+            continue;
+        }
+        V[now.x][now.y] = 1;
+
+        if (amount == 0) {
+            continue;
+        } else if (amount == -1) {
+            flag = 1;
+            break;
+        }
+
+        if (now.x + amount >= N) {
+
+        } else {
+            target.x = now.x + amount;
+            target.y = now.y;
+            push(target);
+        }
+
+        if (now.y + amount >= N) {
+
+        } else {
+            target.x = now.x;
+            target.y = now.y + amount;
+            push(target);
+        }
+    }
+    if (flag) printf("HaruHaru");
+    else
+        printf("Hing");
+
+    free(A[0]);
+    free(A);
+    free(V[0]);
+    free(V);
+    return 0;
+}

zeta/c/completed/1620.c

@@ -0,0 +1,80 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#define MAX_LENGTH 21
+
+typedef struct _Element {
+    int index;
+    char name[MAX_LENGTH];
+} Element;
+
+int ecomp(const void *a, const void *b) {
+    int c = strcmp((*(Element *) a).name, (*(Element *) b).name);
+    return c;
+}
+
+Element binsearch_idx(Element *dict, int N, int x) {
+    int start = 0;
+    int end = N - 1;
+    int mid;
+    while (start <= end) {
+        mid = (start + end) / 2;
+        if (dict[mid].index == x) {
+            break;
+        } else if (dict[mid].index > x) {
+            end = mid - 1;
+        } else {
+            start = mid + 1;
+        }
+    }
+    return dict[mid];
+}
+
+Element binsearch_str(Element *dict, int N, char *x) {
+    int start = 0;
+    int end = N - 1;
+    int mid;
+    while (start <= end) {
+        mid = (start + end) / 2;
+        int c = strcmp(dict[mid].name, x);
+        if (c == 0) {
+            break;
+        } else if (c > 0) {
+            end = mid - 1;
+        } else {
+            start = mid + 1;
+        }
+    }
+    return dict[mid];
+}
+
+int main() {
+    int N, M;
+    scanf("%d %d", &N, &M);
+    Element *dictionary = (Element *) calloc(N, sizeof(Element));
+    Element *str_dictionary = (Element *) calloc(N, sizeof(Element));
+    for (int i = 0; i < N; i++) {
+        scanf("%s", dictionary[i].name);
+        dictionary[i].index = i + 1;
+    }
+
+    memmove(str_dictionary, dictionary, sizeof(Element) * N);
+
+    qsort(str_dictionary, N, sizeof(Element), ecomp);
+
+    for (int i = 0; i < M; i++) {
+        char temp[MAX_LENGTH];
+        scanf("%s", temp);
+        Element e;
+        if (temp[0] <= '9' && temp[0] >= '0') {
+            e = binsearch_idx(dictionary, N, atoi(temp));
+            printf("%s\n", e.name);
+        } else {
+            e = binsearch_str(str_dictionary, N, temp);
+            printf("%d\n", e.index);
+        }
+    }
+
+    return 0;
+}

zeta/c/completed/16439.c

@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int max3(int x, int y, int z) {
+    if (x > y)
+        if (x > z)
+            return x;
+        else
+            return z;
+    else if (y > z)
+        return y;
+    else
+        return z;
+}
+
+int comp(const void *a, const void *b) {
+    return (*(int *) b - *(int *) a);
+}
+
+int main() {
+    int N, M, temp = 0;
+    scanf("%d %d", &N, &M);
+    int *scores = (int *) calloc(N * M, sizeof(int));
+    int *maxes = (int *) calloc(M * M * M, sizeof(int));
+    for (int i = 0; i < N; i++) {
+        for (int j = 0; j < M; j++) {
+            scanf("%d", scores + M * i + j);
+        }
+    }
+    for (int i = 0; i < M; i++) {
+        for (int j = 0; j < M; j++) {
+            if (j == i) continue;
+            for (int k = 0; k < M; k++) {
+                if (k == j || k == i) continue;
+                temp = 0;
+                for (int n = 0; n < N; n++) {
+                    temp += max3(scores[M * n + i], scores[M * n + j], scores[M * n + k]);
+                }
+                maxes[M * M * i + M * j + k] = temp;
+            }
+        }
+    }
+
+    qsort(maxes, M * M * M, sizeof(int), comp);
+
+    printf("%d", maxes[0]);
+    free(scores);
+    free(maxes);
+
+    return 0;
+}

zeta/c/completed/17387.c

@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef long long LL;
+
+int ccw(int x1, int y1, int x2, int y2, int x3, int y3) {
+    LL s = (LL) (x2 - x1) * (LL) (y3 - y1) - (LL) (y2 - y1) * (LL) (x3 - x1);
+    if (s > 0) return 1;
+    if (s < 0) return -1;
+    return 0;
+}
+
+int compare_leq(int x1, int y1, int x2, int y2) {
+    if (x1 == x2) {
+        return y1 <= y2;
+    }
+    return x1 <= x2;
+}
+
+int isIntersect(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4) {
+    int d1 = ccw(x1, y1, x2, y2, x3, y3);
+    int d2 = ccw(x1, y1, x2, y2, x4, y4);
+    int d3 = ccw(x3, y3, x4, y4, x1, y1);
+    int d4 = ccw(x3, y3, x4, y4, x2, y2);
+
+    int c1 = d1 * d2;
+    int c2 = d3 * d4;
+
+    if (c1 == 0 && c2 == 0) {
+        if (compare_leq(x2, y2, x1, y1)) {
+            int temp = x1;
+            x1 = x2;
+            x2 = temp;
+            temp = y1;
+            y1 = y2;
+            y2 = temp;
+        }
+        if (compare_leq(x4, y4, x3, y3)) {
+            int temp = x3;
+            x3 = x4;
+            x4 = temp;
+            temp = y3;
+            y3 = y4;
+            y4 = temp;
+        }
+        return (compare_leq(x1, y1, x4, y4) &&
+                compare_leq(x3, y3, x2, y2));
+    }
+
+    return c1 <= 0 && c2 <= 0;
+}
+
+int main() {
+    int x1, y1, x2, y2;
+    int x3, y3, x4, y4;
+    scanf("%d %d %d %d", &x1, &y1, &x2, &y2);
+    scanf("%d %d %d %d", &x3, &y3, &x4, &y4);
+
+    printf("%d\n", isIntersect(x1, y1, x2, y2, x3, y3, x4, y4));
+    return 0;
+}

zeta/c/completed/1783.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+// M 개수에 주요한 변수를 가지고 있음. N = 1이면 무조건 1
+// 1 1 1 1 1
+// 1 1 1 1 1
+int sick_knight(int N, int M) {
+    if (N == 1) {
+        return 1;
+    } else if (M == 1) {
+        return 1;
+    } else if (M == 2) {
+        if (N < 3) {
+            return 1;
+        } else {
+            return 2;
+        }
+    } else if (M == 3) {
+        if (N < 3) {
+            return 2;
+        } else {
+            return 3;
+        }
+    } else if (M == 4) {
+        if (N < 3) {
+            return 2;
+        } else {
+            return 4;
+        }
+    } else if (M == 5) {
+        if (N < 3) {
+            return 3;
+        } else {
+            return 4;
+        }
+    } else if (M == 6) {
+        if (N < 3) {
+            return 3;
+        } else {
+            return 4;
+        }
+    } else if (M >= 7) {
+        if (N < 3) {
+            return 4;
+        } else {
+            return M - 2;
+        }
+    }
+}
+
+int main() {
+    int N, M;
+    scanf("%d %d", &N, &M);
+    printf("%d\n", sick_knight(N, M));
+    return 0;
+}

zeta/c/completed/18870.c

@@ -0,0 +1,69 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct Honeycomb {
+    int x;
+    int loc;
+    int compressed;
+} Honeycomb;
+
+int compare_x(const void *a, const void *b) {
+    Honeycomb A = *(Honeycomb *) a;
+    Honeycomb B = *(Honeycomb *) b;
+    if (A.x > B.x) {
+        return 1;
+    } else if (A.x < B.x) {
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+int compare_loc(const void *a, const void *b) {
+    Honeycomb A = *(Honeycomb *) a;
+    Honeycomb B = *(Honeycomb *) b;
+    if (A.loc > B.loc) {
+        return 1;
+    } else if (A.loc < B.loc) {
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+// 좌표 압축 알고리즘
+void compress(int N, Honeycomb *arr) {
+    qsort(arr, N, sizeof(Honeycomb), compare_x);
+
+    for (int i = 1; i < N; i++) {
+        if (arr[i].x == arr[i - 1].x) {
+            arr[i].compressed = arr[i - 1].compressed;
+        } else {
+            arr[i].compressed = arr[i - 1].compressed + 1;
+        }
+    }
+
+    qsort(arr, N, sizeof(Honeycomb), compare_loc);
+}
+
+// C11(Clang)에서 런타임에러: 백준 clang에서 qsort가 정렬을 제대로 하지 못하는 문제
+int main() {
+    int N;
+    scanf("%d", &N);
+    Honeycomb *arr;;
+    arr = (Honeycomb *) calloc(N, sizeof(Honeycomb));
+    for (int i = 0; i < N; i++) {
+        scanf("%d", &arr[i].x);
+        arr[i].loc = i;
+        arr[i].compressed = 0;
+    }
+
+    compress(N, arr);
+
+    for (int i = 0; i < N - 1; i++) {
+        printf("%d ", arr[i].compressed);
+    }
+    printf("%d\n", arr[N - 1].compressed);
+    free(arr);
+    return 0;
+}

zeta/c/completed/19532.c

@@ -0,0 +1,18 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+    int a, b, c, d, e, f;
+    scanf("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f);
+    for (int x = -999; x <= 999; x++) {
+        for (int y = -999; y <= 999; y++) {
+            if (a * x + b * y == c && d * x + e * y == f) {
+                printf("%d %d\n", x, y);
+                goto finish;
+            }
+        }
+    }
+
+    finish:
+    return 0;
+}

zeta/c/completed/19592.c

@@ -0,0 +1,54 @@
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int compare(const void *first, const void *second) {
+    if (*(int *) first < *(int *) second)
+        return 1;
+    else if (*(int *) first > *(int *) second)
+        return -1;
+    else
+        return 0;
+}
+
+int main() {
+    int T;
+    scanf("%d", &T);
+    int N, X, Y;
+    int *V;
+    for (int i = 0; i < T; i++) {
+        scanf("%d %d %d", &N, &X, &Y);
+        V = (int *) calloc(N, sizeof(int));
+        for (int j = 0; j < N; j++) {
+            scanf("%d", &V[j]);
+        }
+        int my_speed = V[N - 1];
+        qsort(V, N - 1, sizeof(int), compare);
+        int rival_speed = V[0];
+        double rival_time;
+        if (my_speed > rival_speed) {
+            printf("%d\n", 0);
+            free(V);
+            continue;
+        } else {
+            rival_time = (double) X / (double) rival_speed;
+        }
+        double Z;
+        int iZ;
+        if (rival_time >= 1) {
+            Z = X - (rival_time - 1) * my_speed;
+        } else {
+            Z = rival_speed + 1;
+        }
+
+        iZ = floor(Z + 1);
+        if (iZ > Y) {
+            printf("%d\n", -1);
+        } else {
+            printf("%d\n", iZ);
+        }
+        free(V);
+    }
+
+    return 0;
+}

zeta/c/completed/19637.c

@@ -0,0 +1,41 @@
+#include <stdbool.h>
+#include <stdio.h>
+
+typedef struct TitleCondition {
+    char title[12];
+    int condition;
+} TitleCondition;
+
+TitleCondition total[100000];
+int N, M;
+
+// tc[i-1] < x <= tc[i]일 때, tc[i]
+TitleCondition *get_title(int x) {
+    int start = -1, end = N;
+    int mid;
+
+    while (start + 1 < end) {
+        mid = (start + end) / 2;
+        if (total[mid].condition < x) {
+            start = mid;
+        } else {
+            end = mid;
+        }
+    }
+
+    return total + end;
+}
+
+int main() {
+    scanf("%d %d", &N, &M);
+    for (int i = 0; i < N; i++) {
+        scanf("%s %d", &total[i].title, &total[i].condition);
+    }
+    int temp;
+    for (int i = 0; i < M; i++) {
+        scanf("%d", &temp);
+        printf("%s\n", get_title(temp)->title);
+    }
+
+    return 0;
+}

zeta/c/completed/20153.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define max(x, y) (x) > (y) ? (x) : (y)
+
+// 영웅이 표기법 31 -> 16 + 8 + 4 + 2 + 1 11111
+// 5(101) = 4 + 1, 7(111) = 4 + 2 + 1, 11 = 8 + 2 + 1 1011
+// all 1001 5빼면 1100(12) 7빼면 1110(14) 당첨
+// 하나 빼기
+// 짝수면 제거 --> 사라지면 없음
+// 홀수면 생존 --> 생기면 뭐
+int 영웅이찾기(int N, int *A) {
+    int all = 0;
+    for (int i = 0; i < N; i++) {
+        all ^= A[i];
+    }
+
+    int M = all;
+    for (int i = 0; i < N; i++) {
+        M = max(M, all ^ A[i]);
+    }
+    return M;
+}
+
+int main() {
+    int power[22] = {0};
+    int N;
+    scanf("%d", &N);
+    int *A = (int *) calloc(N, sizeof(int));
+    for (int i = 0; i < N; i++) {
+        scanf("%d", A + i);
+    }
+
+    int r = 영웅이찾기(N, A);
+    printf("%d%d\n", r, r);
+    return 0;
+}

zeta/c/completed/24263.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int main() {
+    int n;
+    scanf("%d", &n);
+    printf("%d\n%d\n", n, 1);
+
+    return 0;
+}

zeta/c/completed/24264.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main() {
+    long long n;
+    scanf("%lld", &n);
+    printf("%lld\n%d\n", n * n, 2);
+    return 0;
+}

zeta/c/completed/24265.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main() {
+    long long n;
+    scanf("%lld", &n);
+    printf("%lld\n%d\n", n * (n - 1L) / 2L, 2);
+    return 0;
+}

zeta/c/completed/24266.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main() {
+    long long n;
+    scanf("%lld", &n);
+    printf("%lld\n%d\n", n * n * n, 3);
+    return 0;
+}

zeta/c/completed/24267.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main() {
+    long long n;
+    scanf("%lld", &n);
+    printf("%lld\n%d\n", n * (n - 1L) * (n - 2L) / 6L, 3);
+    return 0;
+}

zeta/c/completed/24313.c

@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+int main() {
+    int a1, a0, c, n0;
+    scanf("%d %d\n%d\n%d", &a1, &a0, &c, &n0);
+
+    int cond = 1;
+
+    for (int i = n0; i <= 100; i++) {
+        if (a1 * i + a0 > c * i) {
+            cond = 0;
+            break;
+        }
+    }
+
+    printf("%d\n", cond);
+    return 0;
+}

zeta/c/completed/24368.c

@@ -0,0 +1,40 @@
+#include <stdio.h>
+
+int check(a2, a1, a0, c, n0) {
+    if (c - a2 < 0) {
+        return 0;
+    } else if (c - a2 == 0) {
+        if (a1 == 0) {
+            if (-a0 >= 0) {
+                return 1;
+            }
+        } else if (-a1 > 0) {
+            if ((-a1) * n0 - a0 >= 0) {
+                return 1;
+            }
+        }
+        return 0;
+    } else {
+        int p = (c - a2) * n0 * n0 - a1 * n0 - a0;
+        if (p >= 0) {
+            int d = a1 * a1 + 4 * (c - a2) * a0;
+            if (d <= 0) {
+                return 1;
+            } else {
+                double axis = (double) (a1) / (2.0 * (double) (c - a2));
+                if (n0 >= axis) {
+                    return 1;
+                }
+            }
+        }
+        return 0;
+    }
+}
+
+int main() {
+    int a2, a1, a0, c, n0;
+    scanf("%d %d %d", &a2, &a1, &a0);
+    scanf("%d", &c);
+    scanf("%d", &n0);
+    printf("%d\n", check(a2, a1, a0, c, n0));
+}

zeta/c/completed/25305.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+
+int main() {
+    int N, k;
+
+    scanf("%d %d\n", &N, &k);
+
+    int 배열[N + 1];
+    int 임시;
+    for (int i = 0; i < N; i++) {
+        scanf("%d", &배열[i]);
+    }
+
+    for (int i = 0; i < N - 1; i++) {
+        for (int j = 0; j < N - 1; j++) {
+            if (배열[j] < 배열[j + 1]) {
+                임시 = 배열[j];
+                배열[j] = 배열[j + 1];
+                배열[j + 1] = 임시;
+            }
+        }
+    }
+
+    printf("%d\n", 배열[k - 1]);
+
+
+}

zeta/c/completed/2557.c

@@ -0,0 +1,5 @@
+#include<stdio.h>
+
+int main() {
+    printf("Hello World!");
+}

zeta/c/completed/2587.c

@@ -0,0 +1,30 @@
+#include <stdio.h>
+
+
+int main() {
+    int 배열[5];
+    int 합 = 0;
+    int 임시;
+
+    scanf("%d\n%d\n%d\n%d\n%d", &배열[0], &배열[1], &배열[2], &배열[3], &배열[4]);
+
+    for (int i = 0; i < 8; i++) {
+        for (int j = 0; j < 4; j++) {
+            if (배열[j] > 배열[j + 1]) {
+                임시 = 배열[j];
+                배열[j] = 배열[j + 1];
+                배열[j + 1] = 임시;
+            }
+        }
+    }
+
+    for (int i = 0; i < 5; i++) {
+        합 += 배열[i];
+    }
+
+    printf("%d\n", 합 / 5);
+    printf("%d\n", 배열[2]);
+
+
+    return 0;
+}

zeta/c/completed/26083.c

@@ -0,0 +1,100 @@
+#include <stdio.h>
+
+typedef struct Date {
+    int year, month, day;
+} Date;
+
+Date *newDate(int year, int month, int day) {
+    if (0 <= year && year <= 99) {
+        if (1 <= month && month <= 12) {
+            if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
+                if (1 <= day && day <= 31) {
+                    Date *date = (Date *) malloc(sizeof(Date));
+                    date->year = year;
+                    date->month = month;
+                    date->day = day;
+                    return date;
+                }
+            } else if (month == 2 && year % 4 == 0) {
+                if (1 <= day && day <= 29) {
+                    Date *date = (Date *) malloc(sizeof(Date));
+                    date->year = year;
+                    date->month = month;
+                    date->day = day;
+                    return date;
+                }
+            } else if (month == 2 && year % 4 != 0) {
+                if (1 <= day && day <= 28) {
+                    Date *date = (Date *) malloc(sizeof(Date));
+                    date->year = year;
+                    date->month = month;
+                    date->day = day;
+                    return date;
+                }
+            } else {
+                if (1 <= day && day <= 30) {
+                    Date *date = (Date *) malloc(sizeof(Date));
+                    date->year = year;
+                    date->month = month;
+                    date->day = day;
+                    return date;
+                }
+            }
+        }
+    }
+    return NULL;
+}
+
+void delDate(Date *date) {
+    free(date);
+    date = NULL;
+}
+
+int valid(Date *x, Date now) {
+    if (x == NULL) {
+        return 1;
+    }
+    if (x->year < now.year) {
+        return 0;
+    } else if (x->year > now.year) {
+        return 1;
+    }
+
+    if (x->month < now.month) {
+        return 0;
+    } else if (x->month > now.month) {
+        return 1;
+    }
+
+    if (x->day < now.day) {
+        return 0;
+    } else if (x->day >= now.day) {
+        return 1;
+    }
+
+    return 0;
+}
+
+int main() {
+    int N;
+    Date NOW;
+    int first, second, third;
+    scanf("%d %d %d", &NOW.year, &NOW.month, &NOW.day);
+    scanf("%d", &N);
+    for (int i = 0; i < N; i++) {
+        scanf("%d %d %d", &first, &second, &third);
+        Date *d1 = newDate(first, second, third);
+        Date *d2 = newDate(third, second, first);
+        Date *d3 = newDate(third, first, second);
+        if (d1 == NULL && d2 == NULL && d3 == NULL) {
+            printf("invalid\n");
+        } else if (valid(d1, NOW) && valid(d2, NOW) && valid(d3, NOW)) {
+            printf("safe\n");
+        } else {
+            printf("unsafe\n");
+        }
+        delDate(d1);
+        delDate(d2);
+        delDate(d3);
+    }
+}

zeta/c/completed/2615.c

@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int get(int map[], int x, int y) {
+    return map[19 * x + y];
+}
+
+int main() {
+    int Map[19 * 19];
+    int dx[] = {1, 0, 1, 1};
+    int dy[] = {0, 1, 1, -1};
+    int flag;
+    int last_color;
+    int last_pos_x, last_pos_y;
+    for (int i = 0; i < 19; i++) {
+        for (int j = 0; j < 19; j++) {
+            scanf("%d", Map + i + j * 19);
+        }
+    }
+
+    for (int x = 0; x < 19; x++) {
+        for (int y = 0; y < 19; y++) {
+            int now = get(Map, x, y);
+            if (now == 0) {
+                continue;
+            } else {
+                for (int d = 0; d < 4; d++) {
+                    if (19 > x - dx[d] && x - dx[d] >= 0 && 19 > y - dy[d] && y - dy[d] >= 0) {
+                        if (get(Map, x - dx[d], y - dy[d]) == now) {
+                            flag = 0;
+                            continue;
+                        }
+                    }
+                    flag = 1;
+                    for (int i = 1; i < 5; i++) {
+                        if (19 > x + i * dx[d] && x + i * dx[d] >= 0 && 19 > y + i * dy[d] && y + i * dy[d] >= 0) {
+                            if (get(Map, x + i * dx[d], y + i * dy[d]) != now) {
+                                flag = 0;
+                                break;
+                            }
+                        } else {
+                            flag = 0;
+                            break;
+                        }
+                    }
+                    if (flag) {
+                        if (19 > x + 5 * dx[d] && x + 5 * dx[d] >= 0 && 19 > y + 5 * dy[d] && y + 5 * dy[d] >= 0) {
+                            if (get(Map, x + 5 * dx[d], y + 5 * dy[d]) == now) {
+                                flag = 0;
+                                continue;
+                            }
+                        }
+                    }
+
+                    if (flag) {
+                        break;
+                    }
+                }
+            }
+            if (flag) {
+                last_color = now;
+                last_pos_x = x;
+                last_pos_y = y;
+                break;
+            }
+        }
+        if (flag) {
+            break;
+        }
+    }
+    flag ? printf("%d\n%d %d\n", last_color, last_pos_y + 1, last_pos_x + 1) : printf("%d\n", 0);
+
+    return 0;
+}

zeta/c/completed/2828.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+    int N, M, J, cnt = 0, tmp, now = 1, flag;
+    scanf("%d %d", &N, &M);
+    scanf("%d", &J);
+    int *pos = (int *) calloc(J, sizeof(int));
+    for (int i = 0; i < J; i++) {
+        scanf("%d", pos + i);
+    }
+    for (int i = 0; i < J; i++) {
+        flag = 1;
+        while (flag) {
+            if (now <= pos[i] && pos[i] <= now + M - 1) {
+                flag = 0;
+            } else if (now > pos[i]) {
+                now--;
+                cnt++;
+            } else {
+                now++;
+                cnt++;
+            }
+        }
+    }
+    printf("%d\n", cnt);
+}

zeta/c/completed/28702.c

@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int getNextInt(char **s1) {
+    for (int i = 0; i < 3; i++) {
+        if (s1[i][0] == 'F' || s1[i][0] == 'B') {
+            continue;
+        } else {
+            return atoi(s1[i]) + (3 - i);
+        }
+    }
+
+    return 0;
+}
+
+void getNext(char *s2, char **s1) {
+    int ni = getNextInt(s1);
+    if (ni % 3 == 0 && ni % 5 == 0) {
+        strcpy(s2, "FizzBuzz");
+    } else if (ni % 3 == 0) {
+        strcpy(s2, "Fizz");
+    } else if (ni % 5 == 0) {
+        strcpy(s2, "Buzz");
+    } else {
+        sprintf(s2, "%d", ni);
+    }
+}
+
+int main() {
+    char **s1 = malloc(sizeof(char *) * 3);
+    if (s1 == NULL) {
+        exit(1);
+    }
+    for (int i = 0; i < 3; i++) {
+        s1[i] = malloc(sizeof(char) * 10);
+        if (s1[i] == NULL) {
+            exit(1);
+        }
+    }
+
+    for (int i = 0; i < 3; i++) {
+        scanf("%s", s1[i]);
+    }
+
+    char *s2 = malloc(sizeof(char) * 10);
+    if (s2 == NULL) {
+        exit(1);
+    }
+    getNext(s2, s1);
+    printf("%s\n", s2);
+
+    free(s2);
+
+    for (int i = 0; i < 3; i++) {
+        free(s1[i]);
+    }
+    free(s1);
+    return 0;
+}

zeta/c/completed/31825.c

@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct Alphabets {
+    char *string;
+    int len;
+} Alphabets;
+
+char shift(char x) {
+    if (x == 90) return 65;
+    else
+        return x + 1;
+}
+
+void querry_shift(Alphabets *alphas, int left, int right) {
+    for (int i = left - 1; i < right; i++) {
+        *(alphas->string + i) = shift(*(alphas->string + i));
+    }
+}
+
+int querry_string(Alphabets *alphas, int left, int right) {
+    int cnt = 0;
+    char head = 0, now;
+    for (int i = left - 1; i < right; i++) {
+        now = *(alphas->string + i);
+        if (head != now) {
+            head = now;
+            cnt++;
+        }
+    }
+    return cnt;
+}
+
+int querry(Alphabets *alphas, int left, int right, int type) {
+    if (type == 2) {
+        querry_shift(alphas, left, right);
+        return -1;
+    } else {
+        return querry_string(alphas, left, right);
+    }
+}
+
+int main() {
+    int N, Q, left, right, type, ret;
+    scanf("%d %d", &N, &Q);
+    Alphabets alphas;
+    alphas.len = N;
+    alphas.string = (char *) malloc(alphas.len * sizeof(char));
+    scanf("%s", alphas.string);
+    for (int i = 0; i < Q; i++) {
+        scanf("%d %d %d", &type, &left, &right);
+        ret = querry(&alphas, left, right, type);
+        if (ret < 0) {
+            continue;
+        } else {
+            printf("%d\n", ret);
+        }
+    }
+    free(alphas.string);
+}

zeta/c/completed/7785.c

@@ -0,0 +1,40 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct _Item {
+    char name[6];
+    char isin;
+} Item;
+
+int comp(const void *a, const void *b) {
+    int cmp = strcmp((*(Item *) a).name, (*(Item *) b).name);
+
+    return -cmp;
+}
+
+int main() {
+    int N;
+
+    scanf("%d", &N);
+    Item res[N + 1];
+    for (int i = 0; i < N; i++) {
+        char temp[6];
+        scanf("%s %s", res[i].name, temp);
+        if (temp[0] == 'e') {
+            res[i].isin = 1;
+        } else {
+            res[i].isin = 0;
+        }
+    }
+
+    qsort(res, N, sizeof(Item), comp);
+    for (int i = 0; i < N; i++) {
+        if (comp(&res[i], &res[i + 1]) == 0) {
+            i++;
+        } else {
+            printf("%s\n", res[i].name);
+        }
+    }
+    return 0;
+}

zeta/cpp/completed/1000.cpp

@@ -0,0 +1,6 @@
+#include<iostream>
+int main() {
+    int A, B;
+    std::cin >> A >> B;
+    std::cout << A+B;
+}

zeta/cpp/completed/1001.cpp

@@ -0,0 +1,6 @@
+#include<iostream>
+int main() {
+    int A, B;
+    std::cin >> A >> B;
+    std::cout << A-B; 
+}

zeta/cpp/completed/10101.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+    int sides[3];
+
+    for (int i = 0; i < 3; i++) {
+        cin >> sides[i];
+    }
+
+    if (sides[0] + sides[1] + sides[2] != 180) {
+        cout << "Error";
+        return 0;
+    }
+
+    if (sides[0] == 60 and sides[1] == 60 and sides[2] == 60) {
+        cout << "Equilateral";
+        return 0;
+    }
+    if (sides[0] == sides[1] or sides[0] == sides[2] or sides[1] == sides[2]) {
+        cout << "Isosceles";
+        return 0;
+    }
+
+    cout << "Scalene";
+    return 0;
+
+}

zeta/cpp/completed/10798.cpp

@@ -0,0 +1,35 @@
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+int main() {
+    vector<string> S;
+    string temp;
+    for (int i = 0; i < 5; i++) {
+        cin >> temp;
+        S.push_back(temp);
+    }
+
+
+    bool is_fin = false;
+    bool flag = false;
+    int j = 0;
+    while (!is_fin) {
+        flag = false;
+        for (int i = 0; i < 5; i++) {
+            if (S[i].length() <= j) {
+                is_fin = is_fin;
+                continue;
+            }
+            flag = true;
+            cout << S[i][j];
+
+        }
+
+        if (!flag) is_fin = true;
+        j++;
+    }
+
+    return 0;
+}

zeta/cpp/completed/11005.cpp

@@ -0,0 +1,41 @@
+#include <iostream>
+#include <vector>
+#include <algorithm>
+
+using namespace std;
+
+char translate(int c) {
+    if (0 <= c && c <= 9) {
+        return 48 + c;
+    } else {
+        return 55 + c;
+    }
+}
+
+vector<char> calculate(int N, int B) {
+    vector<int> S(0);
+    while (N >= B) {
+        S.push_back(N % B);
+        N /= B;
+
+    }
+    S.push_back(N % B);
+    reverse(S.begin(), S.end());
+    vector<char> ST(0);
+    for(auto i: S) {
+        ST.push_back(translate(i));
+    }
+    return ST;
+
+}
+
+int main() {
+    int N;
+    int B;
+    cin >> N >> B;
+    vector<char> s = calculate(N, B);
+    for(auto i: s) {
+        cout << i;
+    }
+    return 0;
+}

zeta/cpp/completed/1339.cpp

@@ -0,0 +1,53 @@
+#include<iostream>
+#include<map>
+#include<cmath>
+#include<vector>
+#include<algorithm>
+
+bool comp(std::pair<char, int> a, std::pair<char, int> b);
+
+int solve(int N, std::string W[]) {
+
+    std::map<char, int> V;
+
+    for (int i = 0; i < N; ++i) {
+        std::string w = W[i];
+        for (int j = 0; j < w.length(); j++) {
+            if (V.find(w[j]) != V.end()) {
+
+                V[w[j]] += (int) pow(10, (double) (w.length() - j - 1));
+
+            } else {
+                V[w[j]] = (int) pow(10, (double) (w.length() - j - 1));
+            }
+
+        }
+    }
+
+    std::vector<std::pair<char, int>> v(V.begin(), V.end());
+
+    sort(v.begin(), v.end(), comp);
+    int s = 0;
+    for (int i = 0; i < v.size(); i++) {
+        s += (9 - i) * v[i].second;
+    }
+
+
+    return s;
+}
+
+bool comp(std::pair<char, int> a, std::pair<char, int> b) {
+    return a.second > b.second;
+}
+
+
+int main() {
+    int N;
+    std::cin >> N;
+    std::string W[N];
+    for (int i = 0; i < N; i++) {
+        std::cin >> W[i];
+    }
+    std::cout << solve(N, W);
+    return 0;
+}

zeta/cpp/completed/14215.cpp

@@ -0,0 +1,22 @@
+#include <iostream>
+#include <algorithm>
+#include <numeric>
+
+using namespace std;
+
+int main() {
+    int sides[3];
+
+    for (int i = 0; i < 3; i++) {
+        cin >> sides[i];
+    }
+
+    sort(sides, sides + 3);
+
+    if (sides[2] >= sides[1] + sides[0]) {
+        sides[2] = sides[1] + sides[0] - 1;
+    }
+
+    cout << accumulate(sides, sides + 3, 0) << endl;
+    return 0;
+}

zeta/cpp/completed/1448.cpp

@@ -0,0 +1,30 @@
+#include <algorithm>
+#include <functional>
+#include <iostream>
+
+using namespace std;
+
+int get_max(int N, int *S) {
+    for (int i = 0; i < N - 2; i++) {
+        if (S[i] < S[i + 1] + S[i + 2]) return S[i] + S[i + 1] + S[i + 2];
+    }
+    return -1;
+}
+
+int main() {
+
+    int N;
+    int S[1000000];
+
+    cin >> N;
+
+    for (int i = 0; i < N; i++) {
+        cin >> S[i];
+    }
+
+    sort(S, S + N, greater<>());
+
+    cout << get_max(N, S) << endl;
+
+    return 0;
+}

zeta/cpp/completed/15552.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+
+    ios_base::sync_with_stdio(0);
+    cin.tie(nullptr);
+    int T;
+    int A, B;
+    std::cin >> T;
+
+    for (int i = 0; i < T; i++) {
+        std::cin >> A >> B;
+        std::cout << A + B << '\n';
+    }
+
+    return 0;
+}

zeta/cpp/completed/15894.cpp

@@ -0,0 +1,14 @@
+#include <iostream>
+
+using namespace std;
+
+long long solve(long long n) {
+    return 4 * n;
+}
+
+int main() {
+    long long n;
+    cin >> n;
+    cout << solve(n);
+    return 0;
+}

zeta/cpp/completed/15964.cpp

@@ -0,0 +1,11 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+    long long A, B;
+    cin >> A >> B;
+    cout << A * A - B * B;
+
+    return 0;
+}

zeta/cpp/completed/1920.cpp

@@ -0,0 +1,49 @@
+#include <iostream>
+#include <algorithm>
+
+using namespace std;
+
+bool isExist(int x, int L[], int size) { // binsearch
+    int begin = 0;
+    int end = size - 1;
+    int mid;
+    int sep;
+    while (begin <= end) {
+        mid = (begin + end) / 2;
+        sep = L[mid];
+        if (x == sep) {
+            return true;
+        } else if (x < sep) {
+            end = mid - 1;
+        } else {
+            begin = mid + 1;
+        }
+    }
+    return false;
+}
+
+int main() {
+    int N, M;
+    ios::sync_with_stdio(0);
+    cin.tie(NULL);
+    cout.tie(NULL);
+    cin >> N;
+    int A[N];
+    for (int i = 0; i < N; i++) {
+        cin >> A[i];
+    }
+    sort(A, A + N);
+
+    cin >> M;
+    int x;
+    for (int i = 0; i < M; i++) {
+        cin >> x;
+        if (isExist(x, A, N)) {
+            cout << "1\n";
+        } else {
+            cout << "0\n";
+        }
+
+    }
+    return 0;
+}

zeta/cpp/completed/1927.cpp

@@ -0,0 +1,27 @@
+#include <iostream>
+#include <queue>
+
+int main() {
+    std::cin.tie(0);
+    std::cout.tie(0);
+    std::ios_base::sync_with_stdio(0);
+    std::priority_queue<unsigned int, std::vector<unsigned int>, std::greater<int>> q;
+    int N;
+    std::cin >> N;
+    for (int i = 0; i < N; i++) {
+        int x;
+        std::cin >> x;
+        if (x != 0) {
+            q.push(x);
+        } else {
+            if (q.size() != 0) {
+                std::cout << q.top() << "\n";
+                q.pop();
+            } else {
+                std::cout << 0 << "\n";
+            }
+        }
+    }
+
+    return 0;
+}

zeta/cpp/completed/24416.cpp

@@ -0,0 +1,37 @@
+#include <iostream>
+
+using namespace std;
+
+
+int cnt1, cnt2, f[42];
+
+int fib(int n) {
+    if (n == 1 or n == 2) {
+        cnt1++;
+        return 1;
+    } else return (fib(n - 1) + fib(n - 2));
+}
+
+int fibonacci(int n) {
+    return f[n];
+}
+
+int main() {
+
+    int n;
+
+    cin >> n;
+
+    fib(n);
+
+    f[1] = 1;
+    f[2] = 1;
+
+    for (int i = 3; i <= n; i++) {
+        f[i] = f[i - 1] + f[i - 2];
+        cnt2++;
+    }
+    cout << cnt1 << " " << cnt2 << endl;
+
+    return 0;
+}

zeta/cpp/completed/2501.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int main() {
+    int count = 1;
+    int N, K;
+
+    cin >> N >> K;
+    if(K == 1) {
+        cout << 1 << endl;
+        return 0;
+    }
+    for(int i=2;i<=N;i++) {
+        if (N%i == 0) {
+            count += 1;
+            if (count == K) {
+                cout << i << endl;
+                break;
+            }
+        }
+    }
+    if (K > count) {
+        cout << 0 << endl;
+    }
+
+    return 0;
+}

zeta/cpp/completed/25206.cpp

@@ -0,0 +1,52 @@
+#include<iostream>
+
+double convert_grade(const std::string &g);
+
+int main() {
+    double sum_of_score = 0;
+    double sum_of_prod_score_grade = 0;
+    for (int i = 0; i < 20; i++) {
+        std::string category;
+        double score;
+        std::string grade;
+        std::cin >> category >> score >> grade;
+        double s_grade = convert_grade(grade);
+        if (s_grade < 0) {
+            continue;
+        } else {
+            sum_of_score += score;
+            sum_of_prod_score_grade += score * s_grade;
+        }
+
+
+    }
+
+    std::cout << sum_of_prod_score_grade / sum_of_score;
+    return 0;
+}
+
+double convert_grade(const std::string &g) {
+    if (g == "A+") {
+        return 4.5;
+    } else if (g == "A0") {
+        return 4.0;
+    } else if (g == "B+") {
+        return 3.5;
+    } else if (g == "B0") {
+        return 3.0;
+    } else if (g == "C+") {
+        return 2.5;
+    } else if (g == "C0") {
+        return 2.0;
+    } else if (g == "D+") {
+        return 1.5;
+    } else if (g == "D0") {
+        return 1.0;
+    } else if (g == "F") {
+        return 0.0;
+    } else {
+        return -1.0;
+    }
+
+
+}

zeta/cpp/completed/2557.cpp

@@ -0,0 +1,6 @@
+#include<iostream>
+
+int main() {
+    std::cout<<"Hello World!";
+    return 0;
+}

zeta/cpp/completed/2563.cpp

@@ -0,0 +1,30 @@
+#include <iostream>
+
+using namespace std;
+
+void add_paper(int P[], int x, int y) {
+    for (int i = 0; i < 10; i++) {
+        for (int j = 0; j < 10; j++) {
+            P[(x - 1 + i) * 100 + y - 1 + j] = 1;
+        }
+    }
+}
+
+
+int main() {
+    int Paper[100 * 100] = {0,};
+    int N;
+
+    cin >> N;
+    int _x, _y;
+    for (int i = 0; i < N; i++) {
+        cin >> _x >> _y;
+        add_paper(Paper, _x, _y);
+    }
+    int A = 0;
+    for (int i = 0; i < 10000; i++) {
+        A += Paper[i];
+    }
+    cout << A;
+    return 0;
+}

zeta/cpp/completed/2566.cpp

@@ -0,0 +1,21 @@
+#include<iostream>
+
+int main() {
+    int TM = 0;
+    int now;
+    int idx_x, idx_y;
+    for (int i = 0; i < 9; i++) {
+        for (int j = 0; j < 9; j++) {
+            std::cin >> now;
+            if (now >= TM) {
+                TM = now;
+                idx_x = i + 1;
+                idx_y = j + 1;
+            }
+        }
+
+    }
+
+    std::cout << TM << std::endl;
+    std::cout << idx_x << " " << idx_y << std::endl;
+}

zeta/cpp/completed/2720.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+
+using namespace std;
+
+void solve(int x, int c[], int cat[]) {
+    for (int i = 0; i < 4; i++) {
+        c[i] = (x / cat[i]);
+        x %= cat[i];
+    }
+}
+
+int main() {
+    int cat[4] = {25, 10, 5, 1};
+
+    int N;
+
+    cin >> N;
+    for (int i = 0; i < N; i++) {
+        int x;
+        int coins[4];
+        cin >> x;
+        solve(x, coins, cat);
+        for (int j = 0; j < 4; j++) {
+            cout << coins[j] << " ";
+        }
+        cout << endl;
+    }
+    return 0;
+}

zeta/cpp/completed/27323.cpp

@@ -0,0 +1,10 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+    int A, B;
+    cin >> A >> B;
+    cout << A * B;
+    return 0;
+}

zeta/cpp/completed/2738.cpp

@@ -0,0 +1,46 @@
+#include<iostream>
+#include<vector>
+
+using namespace std;
+
+auto sum(int N, int M, int A[], int B[], int S[]) {
+    for (int i = 0; i < N; i++) {
+        for (int j = 0; j < M; j++) {
+            S[i * M + j] = A[i * M + j] + B[i * M + j];
+        }
+    }
+    return S;
+}
+
+void display(int N, int M, int S[]) {
+    for (int i = 0; i < N; i++) {
+        for (int j = 0; j < M; j++) {
+            cout << S[i * M + j];
+            if (j < M - 1) {
+                cout << " ";
+            }
+        }
+        cout << endl;
+    }
+}
+
+int main() {
+    int N, M;
+    cin >> N >> M;
+    int A[N * M];
+    int B[N * M];
+    int S[N * M];
+    for (int i = 0; i < N; i++) {
+        for (int j = 0; j < M; j++) {
+            cin >> A[i * M + j];
+        }
+    }
+    for (int i = 0; i < N; i++) {
+        for (int j = 0; j < M; j++) {
+            cin >> B[i * M + j];
+        }
+    }
+    sum(N, M, A, B, S);
+    display(N, M, S);
+    return 0;
+}

zeta/cpp/completed/2744.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+    string s;
+    cin >> s;
+    for (int i = 0; i < s.length(); i++) {
+        char c = s[i];
+        if (65 <= c && c <= 90) {
+            s[i] += 32;
+        } else {
+            s[i] -= 32;
+        }
+    }
+    cout << s;
+
+    return 0;
+}

zeta/cpp/completed/2745.cpp

@@ -0,0 +1,30 @@
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int translate(char c) {
+    if (48 <= c && c <= 57) {
+        return c - 48;
+    } else {
+        return c - 55;
+    }
+}
+
+int calculate(string s, int n) {
+    int l = s.length();
+    int r = 0;
+    for (int i = 0; i < l; i++) {
+        r += translate(s[i]) * pow(n, l - i - 1);
+    }
+    return r;
+}
+
+
+int main() {
+    string s;
+    int n;
+    cin >> s >> n;
+    cout << calculate(s, n);
+    return 0;
+}

zeta/cpp/completed/2754.cpp

@@ -0,0 +1,42 @@
+#include <iostream>
+#include <iomanip>
+
+using namespace std;
+
+int main() {
+    string s;
+    cin >> s;
+    float v;
+    if (s == "A+") {
+        v = 4.3;
+    } else if (s == "A0") {
+        v = 4.0;
+    } else if (s == "A-") {
+        v = 3.7;
+    } else if (s == "B+") {
+        v = 3.3;
+    } else if (s == "B0") {
+        v = 3.0;
+    } else if (s == "B-") {
+        v = 2.7;
+    } else if (s == "C+") {
+        v = 2.3;
+    } else if (s == "C0") {
+        v = 2.0;
+    } else if (s == "C-") {
+        v = 1.7;
+    } else if (s == "D+") {
+        v = 1.3;
+    } else if (s == "D0") {
+        v = 1.0;
+    } else if (s == "D-") {
+        v = 0.7;
+    } else if (s == "F")
+        v = 0.0;
+    else {
+        v = 0.0;
+    }
+    cout << fixed << std::setprecision(1) << v;
+
+    return 0;
+}

zeta/cpp/completed/27866.cpp

@@ -0,0 +1,10 @@
+#include<iostream>
+
+int main() {
+    std::string s; int N;
+    std::cin >> s;
+    std::cin >> N;
+    std::cout << s[N-1];
+    
+    return 0;
+}

zeta/cpp/completed/2903.cpp

@@ -0,0 +1,9 @@
+#include <iostream>
+#include <cmath>
+
+int main() {
+    int n;
+    std::cin >> n;
+    std::cout << (int) pow(((1 << n) + 1), 2);
+    return 0;
+}

zeta/cpp/completed/5073.cpp

@@ -0,0 +1,35 @@
+#include <iostream>
+#include <algorithm>
+
+using namespace std;
+
+
+int main() {
+    int sides[3];
+    while (true) {
+        for (int i = 0; i < 3; i++) {
+            cin >> sides[i];
+        }
+
+        if (sides[0] == 0) {
+            break;
+        }
+        sort(sides, sides + 3);
+
+        if (sides[0] + sides[1] <= sides[2]) {
+            cout << "Invalid\n";
+            continue;
+        }
+
+        if (sides[0] == sides[1] and sides[1] == sides[2] and sides[2] == sides[0]) {
+            cout << "Equilateral\n";
+            continue;
+        }
+        if (sides[0] == sides[1] or sides[0] == sides[2] or sides[1] == sides[2]) {
+            cout << "Isosceles\n";
+            continue;
+        }
+
+        cout << "Scalene\n";
+    }
+}

zeta/cpp/completed/5597.cpp

@@ -0,0 +1,18 @@
+#include <iostream>
+
+int main() {
+    int *arr = new int[30]{0};
+    int index;
+    for (int i = 0; i < 30; i++) {
+        std::cin >> index;
+        arr[index - 1] = 1;
+    }
+
+        for (int i = 0; i < 30; i++) {
+        if (!arr[i]) {
+            std::cout << i + 1 << std::endl;
+        }
+    }
+
+    return 0;
+}

zeta/cpp/completed/9063.cpp

@@ -0,0 +1,20 @@
+#include <iostream>
+#include <algorithm>
+
+using namespace std;
+
+int main() {
+    int N;
+    cin >> N;
+    int xs[N], ys[N];
+    int x, y;
+    for (int i = 0; i < N; i++) {
+        cin >> x >> y;
+        xs[i] = x;
+        ys[i] = y;
+    }
+    sort(xs, xs + N);
+    sort(ys, ys + N);
+
+    cout << (xs[N - 1] - xs[0]) * (ys[N - 1] - ys[0]) << endl;
+}

zeta/cpp/completed/9086.cpp

@@ -0,0 +1,13 @@
+#include <iostream>
+
+int main() {
+    int N;
+    std::string s;
+    std::cin >> N;
+
+    for (int i = 0; i < N; i++) {
+        std::cin >> s;
+        std::cout << s[0] << s.back() << std::endl;
+    }
+    return 0;
+}

zeta/cpp/completed/9251.cpp

@@ -0,0 +1,48 @@
+#include <algorithm>
+#include <iostream>
+#include <string>
+#include <vector>
+
+using namespace std;
+
+int lenLCSeq(string s1, string s2) {
+    vector<vector<int>> DP(s1.length(), vector<int>(s2.length(), 0));
+
+    for (int i = 0; i < s1.length(); i++) {
+        for (int j = 0; j < s2.length(); j++) {
+            if (s1[i] == s2[j]) {
+                if (i == 0 && j == 0) {
+                    DP[i][j] = 1;
+                } else if (i == 0 && j != 0) {
+                    DP[i][j] = 1;
+                } else if (i != 0 && j == 0) {
+                    DP[i][j] = 1;
+                } else {
+                    DP[i][j] = DP[i - 1][j - 1] + 1;
+                }
+            } else {
+                if (i == 0 && j == 0) {
+
+                } else if (i == 0 && j != 0) {
+                    DP[i][j] = DP[i][j - 1];
+                } else if (i != 0 && j == 0) {
+                    DP[i][j] = DP[i - 1][j];
+                } else {
+                    DP[i][j] = max(DP[i - 1][j], DP[i][j - 1]);
+                }
+            }
+        }
+    }
+
+    return DP[s1.length() - 1][s2.length() - 1];
+}
+
+int main(void) {
+    string s1, s2;
+
+    cin >> s1 >> s2;
+
+    cout << lenLCSeq(s1, s2) << endl;
+
+    return 0;
+}

zeta/cpp/completed/9506.cpp

@@ -0,0 +1,45 @@
+#include <iostream>
+#include <vector>
+#include <numeric>
+#include <algorithm>
+
+using namespace std;
+
+vector<int> isPerfect(int N) {
+    vector<int> v;
+    for (int i = 1; i < N; i++) {
+        if (N % i == 0) {
+            v.push_back(i);
+        }
+    }
+
+    int result = accumulate(v.begin(), v.end(), 0);
+    if (result == N) {
+        return v;
+    } else {
+        return vector<int>();
+    }
+
+}
+
+int main() {
+    int input;
+    vector<int> out;
+    cin >> input;
+    while (input != -1) {
+
+        out = isPerfect(input);
+        if (out.size() > 0) {
+            cout << input << " = " << out[0];
+            for (int i = 1; i < out.size(); i++) {
+                cout << " + " << out[i];
+            }
+            cout << endl;
+        } else {
+            cout << input << " is NOT perfect." << endl;
+        }
+        cin >> input;
+    }
+
+    return 0;
+}

zeta/kt/completed/1003.kt

@@ -0,0 +1,34 @@
+import kotlin.text.toInt
+
+operator fun Pair<Int, Int>.plus(b: Pair<Int, Int>) = Pair<Int, Int>(first + b.first, second + b.second)
+
+
+val Mem = Array<Pair<Int, Int>>(50) { idx ->
+    if (idx == 0) {
+        Pair<Int, Int>(1, 0)
+    } else if (idx == 1) {
+        Pair<Int, Int>(0, 1)
+    } else {
+        Pair<Int, Int>(0, 0)
+    }
+}
+
+fun getFib(n: Int): Pair<Int, Int> {
+
+    val m = Mem[n];
+    if (m.first == 0 && m.second == 0) {
+        Mem[n] = getFib(n - 1) + getFib(n - 2)
+        return Mem[n]
+    } else {
+        return m;
+    }
+}
+
+fun main() {
+    val T = readLine()!!.toInt()
+    for (i in 1..T) {
+        val N = readLine()!!.toInt()
+
+        println(getFib(N).toList().joinToString(" "))
+    }
+}

zeta/kt/completed/10821.kt

@@ -0,0 +1,3 @@
+fun main() {
+    println(readLine()?.split(",")?.size)
+}

zeta/kt/completed/10971.kt

@@ -0,0 +1,34 @@
+import kotlin.math.min
+
+fun solve(N: Int, W: Array<Array<Int>>): Int {
+    val D = ArrayDeque<Triple<Int, Int, Array<Int>>>() // now, cost, visited
+    D.addLast(Triple(0, 0, Array(N) { 0 }.also { it[0] = 1 }))
+
+    var min_cost = Int.MAX_VALUE
+
+    while (D.isNotEmpty()) {
+        val (now, cost, visited) = D.removeLast()
+        if (visited.all { it == 1 }) {
+            if (W[now][0] > 0) min_cost = min(min_cost, cost + W[now][0])
+            continue
+        } else {
+            for (i in 1 until N) {
+                if (visited[i] == 0 && W[now][i] > 0) {
+                    D.addLast(Triple(i, W[now][i] + cost, visited.copyOf().also { it[i] = 1 }))
+                }
+            }
+        }
+
+    }
+    return min_cost
+}
+
+
+fun main() {
+    val N = readln().toInt()
+    val W = Array<Array<Int>>(N) { // 0 to N-1
+        readln().split(' ').map(String::toInt).toTypedArray()
+    }
+
+    println(solve(N, W))
+}

zeta/kt/completed/11058.kt

@@ -0,0 +1,18 @@
+import kotlin.math.max
+
+val Mem = Array<Long>(101) { 0 }
+
+fun solve(N: Int): Long {
+    for (i in 1..N) {
+        Mem[i] = Mem[i - 1] + 1
+        for (j in 3 until i) {
+            Mem[i] = max(Mem[i], Mem[i - j] * (j - 1))
+        }
+    }
+    return Mem[N]
+}
+
+fun main() {
+    val N = readln().toInt()
+    println(solve(N))
+}

zeta/kt/completed/1149.kt

@@ -0,0 +1,32 @@
+import kotlin.math.min
+
+fun List<Int>.toTriple(): Triple<Int, Int, Int> {
+    return Triple(this[0], this[1], this[2])
+}
+
+
+fun solve(N: Int, C: Array<Triple<Int, Int, Int>>): Int {
+    val T = Array<Triple<Int, Int, Int>>(N) { Triple(0, 0, 0) }
+    T[0] = C[0]
+
+    for (i in 1 until N) {
+        T[i] = Triple(
+            min(T[i - 1].second, T[i - 1].third) + C[i].first,
+            min(T[i - 1].first, T[i - 1].third) + C[i].second,
+            min(T[i - 1].first, T[i - 1].second) + C[i].third
+        )
+    }
+
+    return minOf(T[N - 1].first, T[N - 1].second, T[N - 1].third)
+}
+
+fun main() {
+    val N = readln().toInt()
+    val C = Array<Triple<Int, Int, Int>>(N) {
+        readln().split(' ').map { s: String ->
+            s.toInt()
+        }.toTriple()
+    }
+
+    println(solve(N, C))
+}

zeta/kt/completed/11727.kt

@@ -0,0 +1,24 @@
+val Mem = Array<Int>(1001) { i ->
+    if (i == 1) {
+        1
+    } else if (i == 2) {
+        3
+    } else {
+        0
+    }
+}
+
+fun get(N: Int): Int {
+    if (Mem[N] != 0) {
+        return Mem[N]
+    } else {
+        Mem[N] = (get(N - 1) + 2 * get(N - 2)) % 10007
+        return Mem[N]
+    }
+}
+
+
+fun main() {
+    val N = readln().toInt()
+    println(get(N))
+}

zeta/kt/completed/11779.kt

@@ -0,0 +1,60 @@
+import java.util.PriorityQueue
+import java.util.Scanner
+
+fun solve(
+    N: Int,
+    M: Int,
+    D: MutableList<Int>,
+    E: HashMap<Int, MutableList<Pair<Int, Int>>>,
+    start: Int,
+    end: Int
+): Triple<Int, Int, List<Int>> {
+    val pq = PriorityQueue<Triple<Int, Int, List<Int>>> { a, b -> a.first.compareTo(b.first) } // min heap
+    pq.add(Triple(0, start, listOf(start)))
+    D[start] = 0
+
+    val ret: MutableList<Triple<Int, Int, List<Int>>> = mutableListOf()
+
+    while (pq.isNotEmpty()) {
+        val (cost, now, path) = pq.remove()
+
+        if (cost > D[now]) {
+            continue
+        }
+        if (now == end) {
+            return Triple(cost, path.size, path)
+        }
+        for ((v, w) in E[now]!!) {
+            val nd = cost + w
+            if (D[v] > nd) {
+                D[v] = nd
+                pq.add(Triple(nd, v, path + listOf(v)))
+            }
+        }
+    }
+
+    println(D.toString())
+    return ret.last()
+}
+
+fun main() = with(Scanner(System.`in`)) {
+    val N = nextLine().toInt()
+    val D = MutableList<Int>(N + 1, { Int.MAX_VALUE });
+    val M = nextLine().toInt()
+
+    val E: HashMap<Int, MutableList<Pair<Int, Int>>> = HashMap()
+    for (i in 0..N) {
+        E[i] = mutableListOf()
+    };
+    for (i in 0 until M) {
+        val v = nextLine().trim().split(' ').map(String::toInt)
+        E[v.first()]!!.add(v[1] to v[2])
+
+    }
+    val (start, end) = nextLine().trim().split(' ').map(String::toInt)
+
+    val result = solve(start, M, D, E, start, end)
+    println(result.first)
+    println(result.second)
+    println(result.third.joinToString(separator = " "))
+}

zeta/kt/completed/1182.kt

@@ -0,0 +1,33 @@
+fun solve(N: Int, S: Int, I: List<Int>): Int {
+    val D = ArrayDeque<Pair<Int, Int>>()
+    D.addLast(Pair(0, 0))
+
+    var cnt = 0
+
+    while (D.isNotEmpty()) {
+        val (now, accum) = D.removeLast()
+        if (now == N) {
+            if (accum == S) {
+                cnt += 1
+            }
+            continue
+        } else {
+            D.addLast(Pair(now + 1, accum)) // 안 더하기
+            D.addLast(Pair(now + 1, accum + I[now]))
+
+        }
+
+    }
+
+    if (S == 0) {
+        cnt -= 1;
+    }
+
+    return cnt
+}
+
+fun main() {
+    val (N, S) = readln().split(' ').map(String::toInt)
+    val I = readln().split(' ').map(String::toInt)
+    println(solve(N, S, I))
+}

zeta/kt/completed/1463.kt

@@ -0,0 +1,24 @@
+fun bfs(N: Int): Int {
+    val D = ArrayDeque<Pair<Int, Int>>()
+    D.addLast(Pair(N, 0))
+
+    while (D.isNotEmpty()) {
+        val (now, step) = D.removeFirst()
+        if (now == 1) {
+            return step
+        }
+        if (now % 3 == 0) {
+            D.addLast(Pair(now / 3, step + 1))
+        }
+        if (now % 2 == 0) {
+            D.addLast(Pair(now / 2, step + 1))
+        }
+        D.addLast(Pair(now - 1, step + 1))
+    }
+    return -1
+}
+
+fun main() {
+    val N = readln().toInt()
+    println(bfs(N));
+}

zeta/kt/completed/2156.kt

@@ -0,0 +1,24 @@
+fun solve(N: Int, A: Array<Int>): Int {
+    val T = Array<Triple<Int, Int, Int>>(N) {
+        Triple(0, 0, 0)
+    } // 0 안 마시기 ,1번째 마시기, 2번째 마시기
+
+    T[0] = Triple(0, A[0], 0)
+
+    for (i in 1 until N) {
+        T[i] = Triple(
+            maxOf(T[i - 1].first, T[i - 1].second, T[i - 1].third), T[i - 1].first + A[i], T[i - 1].second + A[i]
+        )
+    }
+
+    return maxOf(T[N - 1].first, T[N - 1].second, T[N - 1].third)
+}
+
+fun main() {
+    val N = readln().toInt()
+    val A = Array<Int>(N) {
+        readln().toInt()
+    }
+    println(solve(N, A))
+
+}

zeta/kt/completed/24262.kt

@@ -0,0 +1,5 @@
+fun main() {
+    val n: Int = readLine()!!.toInt()
+    println("1")
+    println("0")
+}

zeta/kt/completed/2557.kt

@@ -0,0 +1,3 @@
+fun main() {
+    print("Hello World!")
+}

zeta/kt/completed/26156.kt

@@ -0,0 +1,40 @@
+import kotlin.math.*
+
+class NarockSolver(val s: String) {
+    companion object {
+        val HAXIM: Int = 1000000007
+    }
+    fun solve(): Int {
+        var cntR = 0
+        var cntO = 0
+        var cntC = 0
+        var cntS = 0
+        var rfront = 1
+        for (v: Char in s) {
+            if (v == 'R') {
+                cntR += rfront
+                cntR %= HAXIM
+            } else if (v == 'O') {
+                cntO += cntR
+                cntO %= HAXIM
+            } else if (v == 'C') {
+                cntC += cntO
+                cntC %= HAXIM
+            } else if (v == 'K') {
+                cntS += cntC
+                cntS %= HAXIM
+            }
+            rfront *= 2
+            rfront %= HAXIM
+        }
+
+        return cntS
+    }
+}
+
+fun main() {
+    readLine()
+    val s: String = readLine()!!
+    val solver = NarockSolver(s)
+    println(solver.solve())
+}

zeta/kt/completed/2908.kt

@@ -0,0 +1,7 @@
+fun main(){
+    val (a, b) = readLine()!!.split(" ")
+    val a_ = a.reversed().toInt()
+    val b_ = b.reversed().toInt()
+    
+    if (a_ > b_) {println(a_)} else {println(b_)}
+}

zeta/kt/completed/33093.kt

@@ -0,0 +1,56 @@
+import java.io.*
+
+class GoldenTicketSolver(
+        val n: Int,
+        val m: Int,
+        val k: Int,
+        val teams: List<Pair<String, String>>
+) {
+
+    fun solve(): List<String> {
+        val goldenticked = mutableListOf<String>()
+        val inst_goldenticked = mutableMapOf<String, Int>()
+        var kcnt = 0
+        for ((index, teaminst) in this.teams.withIndex()) {
+            if (index < this.m) {
+                inst_goldenticked[teaminst.second] = 1
+            } else {
+                if (kcnt >= this.k) {
+                    break
+                }
+                val tmp = inst_goldenticked.getOrDefault(teaminst.second, 0)
+                if (tmp == 0) {
+                    inst_goldenticked[teaminst.second] = 2
+                    goldenticked.add(teaminst.first)
+                    kcnt += 1
+                } else if (tmp == 1) {
+                    continue
+                } else if (tmp == 2) {
+                    continue
+                }
+            }
+        }
+        return goldenticked
+    }
+}
+
+fun main() {
+    val tknz = StreamTokenizer(System.`in`.bufferedReader())
+
+    fun StreamTokenizer.nextInt(): Int {
+        nextToken()
+        return nval.toInt()
+    }
+    fun StreamTokenizer.nextString(): String {
+        nextToken()
+        return sval
+    }
+
+    val (n, m, k) = (1..3).map { tknz.nextInt() }
+    val tms = (1..n).map { Pair(tknz.nextString(), tknz.nextString()) }
+    val solver = GoldenTicketSolver(n, m, k, tms)
+
+    val solved = solver.solve()
+    println(solved.size)
+    solved.forEach { i -> println(i) }
+}

zeta/lua/completed/1000.lua

@@ -0,0 +1,2 @@
+a,b =io.read("n", "n")
+print(a + b)

zeta/lua/completed/1001.lua

@@ -0,0 +1,2 @@
+a,b =io.read("n", "n")
+print(a - b)

zeta/py/11025.py

@@ -0,0 +1,9 @@
+def solve(N, K):
+    ret = 1
+    for i in range(2, N + 1):
+        ret = (ret + K - 1) % i + 1
+    return ret
+
+
+if __name__ == "__main__":
+    print(solve(*map(int, input().split())))

zeta/py/1111.py

@@ -0,0 +1,26 @@
+"""
+1111: IQ Test
+문제:
+    IQ Test의 문제 중에는 공통된 패턴을 찾는 문제가 있다. 수열이 주어졌을 때, 다음 수를 찾는 문제이다.
+    예를 들어, 1, 2, 3, 4, 5가 주어졌다. 다음 수는 무엇인가? 당연히 답은 6이다.
+    약간 더 어려운 문제를 보면, 3, 6, 12, 24, 48이 주어졌을 때, 다음 수는 무엇인가? 역시 답은 96이다.
+
+    이제 제일 어려운 문제를 보자.
+    1, 4, 13, 40이 주어졌을 때, 다음 수는 무엇일까? 답은 121이다.
+    그 이유는 항상 다음 수는 앞 수*3+1이기 때문이다.
+    은진이는 위의 3문제를 모두 풀지 못했으므로, 자동으로 풀어주는 프로그램을 작성하기로 했다.
+    항상 모든 답은 구하는 규칙은 앞 수*a + b이다. 그리고, a와 b는 정수이다.
+    수 N개가 주어졌을 때, 규칙에 맞는 다음 수를 구하는 프로그램을 작성하시오.
+입력:
+    첫째 줄에 N이 주어진다. N은 50보다 작거나 같은 자연수이다. 둘째 줄에는 N개의 수가 주어진다. 이 수는 모두 절댓값이 100보다 작거나 같은 정수이다.
+출력:
+    다음 수를 출력한다. 만약 다음 수가 여러 개일 경우에는 A를 출력하고, 다음 수를 구할 수 없는 경우에는 B를 출력한다.
+"""
+"""
+TC1:
+Input:
+4
+1 4 13 40
+Output:
+121
+"""

zeta/py/1158.py

@@ -0,0 +1,23 @@
+from collections import deque
+
+
+def solve(N, K):
+    q = deque(range(1, N + 1))
+    tq = deque()
+    cnt = 0
+    ret = []
+    while q:
+        while q:
+            cnt += 1
+            cnt %= K
+            if cnt % K == 0:
+                ret.append(q.popleft())
+            else:
+                tq.append(q.popleft())
+        q = tq
+        tq = deque()
+    return "<" + ", ".join(map(str, ret)) + ">"
+
+
+if __name__ == "__main__":
+    print(solve(*map(int, input().split())))

zeta/py/11866.py

@@ -0,0 +1,23 @@
+from collections import deque
+
+
+def solve(N, K):
+    q = deque(range(1, N + 1))
+    tq = deque()
+    cnt = 0
+    ret = []
+    while q:
+        while q:
+            cnt += 1
+            cnt %= K
+            if cnt % K == 0:
+                ret.append(q.popleft())
+            else:
+                tq.append(q.popleft())
+        q = tq
+        tq = deque()
+    return "<" + ", ".join(map(str, ret)) + ">"
+
+
+if __name__ == "__main__":
+    print(solve(*map(int, input().split())))

zeta/py/12100.py

@@ -0,0 +1,15 @@
+import sys
+
+input = sys.stdin.readline
+
+class Pane2048:
+    def __init__(self, N: int, pane: list[list[int]]):
+        self.N = N
+        self.pane = pane
+        
+    @staticmethod
+    def move(direction: int, N: int, pane: list[list[int]]):
+        pass
+
+if __name__ == '__main__':
+    pass

zeta/py/12101.py

@@ -0,0 +1,13 @@
+n, k = map(int, input().split())
+t = []
+
+
+# TODO:
+# 
+#
+#
+#
+#
+#
+#
+

zeta/py/1214.py

@@ -0,0 +1,24 @@
+# Px+Qy >= D
+def solve(D, P, Q):
+    if D % P == 0 or D % Q == 0:
+        return D
+    Q, P = sorted((P, Q))
+    p_bound = (D // P) + 1
+
+    min_S = 10 ** 13
+    for x in range(0, p_bound + 1):
+
+        d, m = divmod(D - P * x, Q)
+        if m == 0:
+            return D
+        new_S = (d + 1) * Q + P * x
+        if new_S < min_S:
+            min_S = new_S
+            if min_S == D:
+                return min_S
+    return min_S
+
+
+if __name__ == '__main__':
+    D, P, Q = map(int, input().split())
+    print(solve(D, P, Q))

zeta/py/1485.py

@@ -0,0 +1,33 @@
+N = int(input())
+
+
+def check90(p1, p2, p3):
+    if p2[0] - p1[0] == 0:
+        if p3[1] - p1[1] == 0:
+            return True
+    elif p3[0] - p1[0] == 0:
+        if p2[1] - p1[1] == 0:
+            return True
+
+    return - (p3[0] - p1[0]) * (p2[1] - p1[1]) == (p3[1] - p1[1]) * (p2[0] - p1[0])
+
+
+for _ in range(N):
+    P = [(p1x, p1y), (p2x, p2y), (p3x, p3y), (p4x, p4y)] = \
+        map(int, input().split()), map(int, input().split()), map(int, input().split()), map(int, input().split())
+    if check90((p1x, p1y), (p2x, p2y), (p3x, p3y)):
+        (opox, opoy) = p4x, p4y
+        (remx, remy) = p3x, p3y
+    elif check90((p1x, p1y), (p2x, p2y), (p4x, p4y)):
+        (opox, opoy) = p3x, p3y
+        (remx, remy) = p2x, p2y
+    elif check90((p1x, p1y), (p3x, p3y), (p4x, p4y)):
+        (opox, opoy) = p2x, p2y
+        (remx, remy) = p4x, p4y
+    else:
+        print(0)
+        continue
+    if (opox - p1x) ** 2 + (opoy - p1y) ** 2 == 2 * (remx - p1x) ** 2 + 2 * (remy - p1y) ** 2:
+        print(1)
+    else:
+        print(0)

zeta/py/1509.py

@@ -0,0 +1,12 @@
+import sys
+
+input = sys.stdin.readline
+
+class PalindromePartition:
+    def __init__(self, s: str):
+        self.s = s
+        self.N = len(s)
+
+
+if __name__ == "__main__":
+    s = input().rstrip()

zeta/py/15965_sieve.py

@@ -0,0 +1,4 @@
+# 먼저 최대 개수까지 빈 리스트 만듬;
+# 그 다음 반복문 돔
+# 그리고 배수만큼을 없앰
+# 그리고 반복

zeta/py/17386.py

@@ -0,0 +1,35 @@
+x1, y1, x2, y2 = map(int, input().split())
+x3, y3, x4, y4 = map(int, input().split())
+
+vx1, vy1 = x2 - x1, y2 - y1
+vx2, vy2 = x4 - x3, y4 - y3
+if vx1 == 0 and vy1 == 0:
+    print(0)
+elif vx1 == 0 or vy1 == 0:
+    if vx1 == 0:
+        rx = x1
+        ry = (vy2/vx2) * (rx - x3) + y3
+
+        t0 = (ry - y1) / vy1
+        t1 = (rx - x3) / vy2
+    else:
+        rx = x3
+        ry = (vy1 / vx1) * (rx-x1) + y1
+
+        t0 = (rx - x1) / vx1
+        t1 = (ry - y3) / vy2
+    if t0 < 0 or t0 > 1 or t1 < 0 or t1 > 1: print(0)
+    else: print(1)
+else:
+    a0 = vy1 / vx1
+    a1 = vy2 / vx2
+
+    rx = (a0 * x1 - a1 * x3 + y3 - y1 )/ (a0 - a1)
+    ry = a0 * (rx - x1) + y1
+
+    t0 = (rx - x1) / vx1
+    t1 = (rx - x3) / vx2
+    if a0 == a1: print(0)
+    elif t0 < 0 or t0 > 1 or t1 < 0 or t1 > 1: print(0)
+    else:
+        print(1)

zeta/py/18870.py

@@ -0,0 +1,2 @@
+def solve(N, X):
+    

zeta/py/1920.py

@@ -0,0 +1,10 @@
+N = int(input())
+A = list(map(int, input().split()))
+M = int(input())
+K = list(map(int, input().split()))
+
+for k in K:
+    if k in A:
+        print(1)
+    else:
+        print(0)

zeta/py/2085.py

@@ -0,0 +1,52 @@
+import sys
+
+input = sys.stdin.readline
+
+
+def count_nums(post: list[str], base: int):
+    n = len(post)
+    subpost = [[0 for _ in range(n)] for _ in range(n)]
+    cnts = [[0 for _ in range(n)] for _ in range(n)]
+    P = [0] * n
+    for i in range(n):
+        cnt = 0
+        for j in range(i, n):
+            subpost[i][j] = int("".join(post[i:j + 1]))
+    for i in range(n):
+        cnt = 0
+        for j in range(i+1):
+            if subpost[j][i] < base:
+                pass
+
+class BaseSpliter:
+    def __init__(self, s: str):
+        self.s: str = s
+        self.post = []
+        if len(self.s) <= 1:
+            return
+        self.flag = False
+        if self.s[0] == "0":
+            if len(self.s) > 1 and self.s[1] == 0:
+                pass
+            else:
+                self.flag = True
+            return
+        for c in self.s:
+            if c == "0":
+                self.post[-1] += c
+            else:
+                self.post.append(c)
+        print(self.post)
+
+    def solve(self) -> int:
+        if not self.post:
+            return 0
+        elif self.flag:
+            return 1
+
+
+if __name__ == "__main__":
+    S = input().rstrip()
+    solver = BaseSpliter(S)
+    # print(solver.solve())
+    count_nums(["1", "2", "3"], 4)