Submission

Score: 100

User: 8ii8jj

Problemset: เลขหลักของผลคูณ

Language: c

Time: 0.002 second

Submitted On: 2025-10-12 22:18:29

#include <stdio.h>
int main(){
    long long a,b,c,d,e,ans;
    scanf("%lld %lld %lld",&a,&b,&c);
    d=a*b;
    long long temp = d;
    while(temp > 0) {
        e++;
        temp /= 10;
    }
    if(c>e){
        printf("_");
        return 0;
    }
    for(int i=0;i<=e-c;i++){
        ans=d%10;
        d/=10;
    }
    printf("%d",ans);
}