Submission

Score: 100

User: Kidmaiok

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-11 11:19:08

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define space << ' '
#define nl << endl
int arr[30];
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    string n;
    cin >> n;
    for(int i =0; i < n.size();i++){
        arr[n[i]-'A']++;
    }
    for(int i =0; i < 30;i++){
        if(arr[i] == 1){
            cout << char(i+'A');
            return 0;
        }
    }
    
}