Submission

Score: 100

User: IIIIIIIIIIII

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-13 14:28:44

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

int main(){
    int k=0;
    string s;
    cin >> s;
    sort(s.begin(),s.end());
    for(int i=0;i<s.size();i++){
        for(int j=0;j<s.size();j++){
            if(s[i]==s[j] && i!=j){
                k++; break;
            }
        }
        if(k==0){
            cout << s[i];
            break;
        }k=0;
    }
}