Create 1600.cpp

QUSTOJ/1600.cpp

@@ -0,0 +1,37 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+int main() {
+ios::sync_with_stdio(false); cin.tie(0);
+int a, b, c;
+string name;
+while (cin >> a >> b >> c) {
+set<string> s;
+vector<string> v;
+for (int i=0; i<a; i++) {
+cin >> name;
+s.insert(name);
+}
+for (int j=0; j<b; j++) {
+cin >> name;
+if (s.count(name)) v.push_back(name);
+}
+for (int k=0; k<c; k++) {
+cin >> name;
+for (int i=0; i<v.size(); i++) {
+if (v[i] == name) {
+v.erase(v.begin()+i);
+}
+}
+}
+if (v.empty()) cout << "No enemy spy\n";
+else {
+int sz = v.size();
+cout << v[0];
+for (int i=1; i<sz; i++)
+cout << " " << v[i];
+cout << "\n";
+}
+}
+return 0;
+}