Submission

Score: 100

User: SushiCodelnw

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-26 15:34:34

#include <iostream>
using namespace std;

int main() {
    string s;
    int index = 0;
    cin >> s;

    int len = s.length();
    for (int i = 0; i < len - 1; i++)
        for (int j = 0; j < len - 1; j++)
            if (s[j] > s[j + 1]) {
                char temp = s[j];
                s[j] = s[j + 1];
                s[j + 1] = temp;
    }

    for (int i = 0; i < len; i++) {
        bool some = false;
        for (int j = 0; j < len; j++) if (i != j && s[i] == s[j]) {
            some = true;
            break;
        }
        if (!some) {
            cout << s[i];
            return 0;
        }
    }





    return 0;
}