Submission

Score: 100

User: Gump2011

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2025-09-28 20:26:42

#include <bits/stdc++.h>
using namespace std;
int main(){
    char s[25];
    cin >> s;

    int ct[26] = {0};
    for(int i = 0; s[i] != '\0'; i++){
        ct[s[i] - 'A']++;
    }

    for(int i = 0; i < 26; i++){
        if(ct[i] == 1){
            cout << char('A' + i);
            break;
        }
    }
}