Submission

Score: 100

User: nicekrittaphat

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-11 20:03:51

#include<iostream>
#include<string>
using namespace std;

int main(){

    string str;
    cin >> str;

    int count1[26] = {0};

    for(int i=0;i<str.size();i++){
        count1[str[i]-'A'] +=1;
    }

    for(int i=0;i<26;i++){
        if(count1[i]==1){
            cout<<(char)('A'+i);
            return 0;
        }
    }
}