Submission

Score: 100

User: Nagornz

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-21 23:12:00

#include <stdio.h>

int main(){
    char str[25];
    scanf("%s", str);
    int cnt[26] = {0};
    for (int i = 0; str[i] != '\0'; i++) cnt[str[i] - 'A']++;
    for (int i = 0; i < 26; i++) {
        if (cnt[i] == 1) {
            printf("%c", 'A' + i);
            break;
        }
    }
}