Submission

Score: 100

User: mrblbb

Problemset: เลขหลักของผลคูณ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-12 23:41:28

#include <stdio.h>
#include <math.h>

int main(){
    int a, b, x;
    scanf("%d %d %d", &a, &b, &x);
    long long sum = a*b;
    int n=0;
    long long k=sum;
    while (k>0){
        k=k/10;
        n++;
    }
    if (x>n){
        printf("_");
        return 0;
    }
    sum = sum/ pow(10, n-x);
    printf("%lld", sum%10);
}