Submission

Score: 100

User: Trin1506

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-09 20:15:10

#include <bits/stdc++.h>
using namespace std;
int freq[26];
int main(){
    string word;
    cin >> word;
    for(int i=0;i<=word.size()-1;i++){
        freq[word[i]-65]++;
    }
    for(int i=0;i<26;i++){
        if(freq[i]==1){
            cout << char(65+i);
            break;
        }
    }
    
}