complete 1676.py 2981.py 3036.py

zeta_python/completed/1676.py

@@ -0,0 +1,20 @@
+def solve(N):
+    if N == 0 or N == 1:
+        return 0
+    count2 = 0
+    count5 = 0
+
+    for i in range(2, N + 1):
+        while i % 2 == 0 or i % 5 == 0:
+            if i % 2 == 0:
+                i //= 2
+                count2 += 1
+            elif i % 5 == 0:
+                i //= 5
+                count5 += 1
+
+    return min((count2, count5))
+
+
+if __name__ == '__main__':
+    print(solve(int(input())))

zeta_python/completed/1676_shortcut.py

@@ -0,0 +1,16 @@
+def solve(N):
+    if N == 0 or N == 1:
+        return 0
+    count5 = 0
+
+    for i in range(5, N + 1, 5):
+        while i % 5 == 0:
+            if i % 5 == 0:
+                i //= 5
+                count5 += 1
+
+    return count5
+
+
+if __name__ == '__main__':
+    print(solve(int(input())))

zeta_python/completed/2981.py

@@ -0,0 +1,32 @@
+def divisor(x):
+    divs = []
+    for i in range(1, int(x ** (1 / 2)) + 1):
+        if x % i == 0:
+            divs.append(i)
+    for d in divs[::-1]:
+        t = x // d
+        if d == t:
+            continue
+        divs.append(x // d)
+    return divs
+
+
+def gcd(x1, x2):
+    while x2 != 0:
+        temp = x1 % x2
+        x1 = x2
+        x2 = temp
+    return x1
+
+
+def solve(N, M):
+    M.sort()
+    last_night = M[1] - M[0]
+    for i in range(1, N - 1):
+        last_night = gcd(last_night, M[i + 1] - M[i])
+    return " ".join(map(str, divisor(last_night)[1:]))
+
+
+if __name__ == '__main__':
+    n = int(input())
+    print(solve(n, list(map(int, (input() for i in range(n))))))

zeta_python/completed/3036.py

@@ -0,0 +1,24 @@
+def fraction_ize(p, q):
+    while True:
+        # one process
+        for i in range(2, int(max((p, q)) ** (1 / 2)) + 1):
+            if q % i == 0:
+                if p % i == 0:
+                    q //= i
+                    p //= i
+                    break
+        else:
+            break
+    return p, q
+
+
+def solve(N, M):
+    chains = M[0]
+    T = []
+    for i in range(1, N):
+        T.append(fraction_ize(chains, M[i]))
+    return "\n".join(f"{p}/{q}" for p, q in T)
+
+
+if __name__ == '__main__':
+    print(solve(int(input()), list(map(int, input().split()))))