Submission

Score: 100

User: samsenpisardmoo

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-30 19:58:34

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int arr[26] = {0};
    string a;
    cin >> a;

    for (int i = 0; i < a.length(); i++)
    {
        arr[a[i] - 'A']++;
    }

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