complete 1764.cpp 10816.cpp 25793.kt

storage/zeta/cpp/completed/1764.cpp

@@ -0,0 +1,55 @@
+#include <iostream>
+#include <set>
+#include <string>
+#include <algorithm>
+#include <vector>
+#include <iterator>
+
+using namespace std;
+
+void fastio() {
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+    cout.tie(nullptr);
+}
+
+int main() {
+    fastio();
+
+    int n, m;
+
+    cin >> n >> m;
+
+    auto 듣도못한사람 = new set<string>();
+    auto 보도못한사람 = new set<string>();
+    for (auto i = 0; i < n; i++) {
+        string name;
+        cin >> name;
+        듣도못한사람->insert(name);
+
+
+    }
+
+    for (auto j = 0; j < m; j++) {
+        string name;
+        cin >> name;
+        보도못한사람->insert(name);
+    }
+
+    auto 듣도보도못한사람 = new vector<string>();
+    set_intersection(
+            듣도못한사람->begin(), 듣도못한사람->end(),
+            보도못한사람->begin(), 보도못한사람->end(),
+            back_inserter(*듣도보도못한사람)
+    );
+
+    cout << 듣도보도못한사람->size() << "\n";
+    for (auto name: *듣도보도못한사람) {
+        cout << name << "\n";
+    }
+
+    delete 듣도못한사람;
+    delete 보도못한사람;
+    delete 듣도보도못한사람;
+
+}