Submission

Score: 0

User: Peerawat

Problemset: เลขดวง

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-13 19:40:14

#include <bits/stdc++.h>
using namespace std;
int main(){
    string s;
    cin >> s;

    int c[256] = {0};

    for(int i=0;i<s.size();i++){
        c[s[i]]++;
    }

    for(int i=0;i<256;i++){
        if(c[i]==1){
            cout << char(i);
            return 0;
        }
    }




}