Submission

Score: 100

User: yume_snowy

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2024-11-20 16:12:27

#include <iostream>
using namespace std;

int main() {
    char a[10000];
    cin >> a;
    int len;

    for (int i=0; i<10000; i++) {
        if (a[i] == '\0') {
            len = i;
            break;
        }
    }

    int num[len];
    for (int i=0; i<len; i++) {
        num[i] = int(a[i]);
    }

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

    for (int i=0; i<len; i++) {
        if (i==0 && num[i+1]!=num[i]) {
            cout << char(num[i]);
            break;
        }
        if (num[i-1] != num[i] && num[i+1] != num[i]) {
            cout << char(num[i]);
            break;
        }
    }
}