Submission

Score: 100

User: miinr

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-13 19:20:15

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

int main() {
    string s;
    cin >> s;
    map<char, int> mp;

    for(auto &c : s) {
        mp[c] += 1;
    }

    for(auto &[k,v] : mp) {
        if(v == 1) {
            cout << k;
            break;
        }
    }
}