Submission

Score: 100

User: Chayatoeyy

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-06 13:58:58

#include<bits/stdc++.h>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    string s;
    cin>>s;
    char ans;
    int cnt[30]={0};
    for(int i=0;i<s.length();i++){
        cnt[s[i]-'A']++;
    }
    for(int i=0;i<27;i++){
        if(cnt[i]==1){
            cout << char(i+'A') ;
            break;
        }
    }
}