a149: 乘乘樂 FYI: https://yunlinsong.blogspot.com/2014/10/blog-post.html

a149.cpp

#include <cmath>
#include <cstdio>

using namespace std;

int main(void){
	int num = 0;
	int n = 0;
	long result = 1;

    while(scanf("%d", &num) != EOF)
    {
		for(int i = 1; i <= num; i++)
		{
			result = 1;
			scanf("%d", &n);
			
			while(n / 10 > 0)
			{
				int r = n % 10;
				result *= r;
				n = n / 10;
			}
			
			result *= n;
			printf("%ld\n", result);
		}
		
    }

    return 0;
}