Submission #105641

#	Time	Username	Problem	Language	Result	Execution time	Memory
105641		thiago4532	Three Friends (BOI14_friends)	C++17	35 / 100	1063 ms	8360 KiB

friends

#include <bits/stdc++.h>
#define subs(a, b) substr(a, b-a+1)
using namespace std;
 
int main() {
	int n;
	cin >> n;
	if(n%2 == 0){
		cout << "NOT POSSIBLE\n";
		return 0;
	}
	string str;
	cin >> str;
	
	string resp = "NOT POSSIBLE";
 
	for(int i=0;i<n;i++){
		string x;
		for(int j=0;j<n;j++)
			if(j != i) x += str[j];
		int k = x.size();
		if(x.subs(0, k/2 - 1) == x.subs(k/2, k-1)){
			if(resp != "NOT POSSIBLE" && resp != x.subs(0, k/2 - 1)){
				cout << "NOT UNIQUE\n";
				return 0;
			}
			resp = x.subs(0, k/2 - 1);
		}
 
		
	}
	cout << resp << "\n";
}
	

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