Submission #338217

#	Time	Username	Problem	Language	Result	Execution time	Memory
338217		limabeans	Three Friends (BOI14_friends)	C++17	35 / 100	1080 ms	7668 KiB

friends

#include <bits/stdc++.h>
using namespace std;

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;


const int maxn = 1e6 + 5;



void notp() {
    out("NOT POSSIBLE");
}


void notu() {
    out("NOT UNIQUE");
}


int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);

    int n;
    string u;
    cin>>n>>u;

    if (n%2==0) notp();


    string ans;
    
    for (int i=0; i<n; i++) {
	string tmp = u.substr(0,i) + u.substr(i+1);
	string s = tmp.substr(0,(n-1)/2);
	string t = tmp.substr((n-1)/2);
	if (s==t) {
	    if (ans!="" && ans!=s) notu();
	    ans = s;
	}
    }

    if (ans=="") notp();
    cout<<ans<<endl;    
    return 0;
}

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