Submission

Score: 100

User: wasupum

Problemset: เลขหลักของผลคูณ

Language: c

Time: 0.002 second

Submitted On: 2025-10-04 21:39:23

#include <stdio.h>
typedef long long ll;

int main(void){
    ll A,B,M;
    int x;
    scanf("%lld %lld %d",&A,&B,&x);
    M = A * B;
    
    int po[100];
    int i = 0;
    while(M){
        po[i++] = M % 10;
        M /= 10;
    }
    if(i - x < 0)printf("_");
    else printf("%d",po[i-x]);
    
    return 0;
}