Submission

Score: 100

User: Quaoar

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-24 15:17:07

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

int main(){
    string input;
    cin >> input;
    int nums[256] = {};

    for (int i = 0 ; i < input.size() ; i++){
        nums[input[i]]++;
    }

    for (int i = 0 ; i < 256 ; i++){
        if (nums[i] == 1){
            cout << char(i);
            return 0;
        }
    }

    return 0;
}