Submission

Score: 100

User: Bunkoblong

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-06 19:09:46

#include <stdio.h>
int main(){
    int a, b, x;
    scanf("%d %d %d", &a, &b, &x);
    int c = a * b, cc = c, l = 0;

    while (cc > 0) {
        cc /= 10;
        l++;
    }
    if (x > l) {
        printf("_\n");
        return 0;
    }
    for (int i = 1; i <= l - x; i++) {
        c /= 10;
    }
    printf("%d\n", c % 10);
}