Submission

Score: 100

User: Whatthepoop

Problemset: เลขหลักของผลคูณ

Language: c

Time: 0.002 second

Submitted On: 2025-10-11 21:20:01

#include <stdio.h>

int main(){
    int a, b, x;
    scanf("%d %d %d", &a , &b, &x);
    long long c = a*b;

    int i = 0;
    int arr[100];
    while(c > 0){
        int digit = c%10;
        arr[i] = digit;
        c/=10;
        i++;
    }

    if(x > i){
        printf("_");
        return 0;
    }

    int count = 1;
    for(int k = i-1; k >= 0; k--){
        if(count == x){
            printf("%d", arr[k]);
            return 0;
        }
        count++;
    }

    return 0;
}