#include <algorithm>
#define input "cifra.in"
#define output "cifra.out"
#define DIM 100001

using namespace std ;

int t ;
int nr ;
char c1 , c2 ,c3 ;
int s[DIM]={0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0,0};

void solve()
    {
        scanf ("%d" , &t) ;
        scanf ("%c" , &c1) ;
        for (int i=1 ; i<=t ; i++ )
            {
                scanf ("%c" , &c1) ;
                scanf ("%c" , &c2) ;
                if (c2!='\n') {
                  while (true) {
                    scanf ("%c" , &c3) ;
                    if (c3=='\n') {
                      break ;
                    }
                    else {
                      c1=c2 ;
                      c2=c3 ;
                    }
                  }
                  nr=(c1-'0')*10 + c2-'0' ;
                }
                else {
                  nr=c1-'0' ;
                }
                printf ("%d\n" , s[nr]) ;

            }
    }
int main()
{
    freopen (input,"r",stdin);
    freopen (output,"w" , stdout ) ;

    solve() ;

    return 0;
}