Submission

Score: 100

User: onlyme910

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-08 08:31:32

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

int abc[26];

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