Submission

Status:

PPPPPPPPPP

Score: 100

User: Namkhing

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2025-04-10 23:12:17

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


int main() {
    cin.tie(nullptr)->ios_base::sync_with_stdio(false);
    string s;
    cin >> s;
    map<char, int> cnt;
    for (char c : s) cnt[c]++;
    for (auto [x, y] : cnt) {
        if (y > 1) continue;
        cout << x;
        return 0;
    }
}