Submission #653142

#	Time	Username	Problem	Language	Result	Execution time	Memory
653142		aryan12	Three Friends (BOI14_friends)	C++17	0 / 100	59 ms	4268 KiB

friends

#include <iostream>
using namespace std;
string s;
int n,p,k;
bool m(int i, int j){for(k=p=0;k<=n;k++)p+=p<n&&s[i+p]==s[j+k];return p==n;}
int main(){cin>>n>>s;s+='$';bool L=m(0,n/=2),R=m(n+1,0);if((!L&&!R)||size(s)&1)return !(cout<<"NOT POSSIBLE");if(L&&R&&!m(0,n-1))cout<<"NOT UNIQUE";else cout<<s.substr(R*(n+1),n);}

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