#19349: _c++
10851141
(瑤森)
#include <iostream>
using namespace std;
int main()
{
int T ;
cin >>T ;
while (T-- ){
int n ;
cin >>n ;
int out=1 ;
if (n==0 ){
out=0 ;
}
while (n){
out*=n%10 ;
n/=10 ;
}
cout <<out <<endl ;
}
}