Submission #1228631

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228631		irina	세 명의 친구들 (BOI14_friends)	C++20	0 / 100	23 ms	4156 KiB

friends

#include<bits/stdc++.h>
using namespace std;
string u;
int vis[27],ans,n;
int main(){
    cin>>n;
    cin>>u;
    for(int i=0;i<n;i++){
        int y=u[i]-'A'+1;
        vis[y]++;
    }
    for(int i=1;i<27;i++){
        if(vis[i]>2&&vis[i]%2==1){
            cout<<"NOT UNIQUE";
            return 0;
        }
    }
    if(n%2==0){
        cout<<"NOT POSSIBLE";
        return 0;
    }
    for(int i=1;i<=26;i++){
        if(vis[i]==2)cout<<char('A'+i-1);
    }
    return 0;
}

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