Submission #713936

#	Time	Username	Problem	Language	Result	Execution time	Memory
713936		Stickfish	Three Friends (BOI14_friends)	C++17	0 / 100	1075 ms	6536 KiB

friends

#include <iostream>
#include <string>
#include <vector>
using namespace std;

signed main() {
    int n;
    cin >> n;
    string s;
    cin >> s;
    if (n % 2 == 0) {
        cout << "NOT POSSIBLE\n";
        return 0;
    }
    int m = n / 2;
    string ans = "NOT POSSIBLE";
    for (int i = 0; i < n; ++i) {
        string t = s;
        t.erase(t.begin() + i);
        if (t.substr(0, m) == t.substr(m, m)) {
            if (ans == "NOT POSSIBLE" || ans == t) {
                ans = t.substr(0, m);
            } else {
                cout << "NOT UNIQUE\n";
                return 0;
            }
        }
    }
    cout << ans << '\n';
}

• Subtask 1: 0 / 35
• Subtask 2: 0 / 65