Submission

Score: 100

User: pitt

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-12 12:50:30

#include<bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    string w;
    cin >> w;
    set<char> wo;
    for(int i = 0; i < w.size();i++){
        if(count(w.begin(),w.end(),w[i]) == 1){
            wo.insert(w[i]);
        }
    }
    cout << *wo.begin();
}