Submission

Score: 100

User: solomon

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-24 15:18:27

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

int main(){
    int c[26] = {};
    string s;
    cin >> s;
    for(int i:s){
        c[i-'A']++;
    }
    for(int i = 0;i<26;i++){
        if(c[i]==1){
            cout << (char)(i+'A');
            break;
        }
    }
}