Submission

Score: 30

User: colo39

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-01 13:52:38

#include <bits/stdc++.h>
using namespace std;
map<char,int> mp;
int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    string s;
    cin >> s;
    for (auto c : s) {
        mp[c]++;
    }
    for (auto c : s) {
        if (mp[c] == 1) {cout << c;break;}
    }    
    
}