# include <stdio.h>
# include <math.h>
# include <string.h>
long i,x;
int t;
char n[102];
long a[]={0,1,5,2,8,3,9,2,8,7,8,9,3,0,6,1,7,0,6,5,6,7,1,8,4,9,5,8,4,3,4,5,9,6,2,7,3,6,2,1,2,3,7,4,0,5,1,4,0,9,0,1,5,2,8,3,9,2,8,7,8,9,3,0,6,1,7,0,6,5,6,7,1,8,4,9,5,8,4,3,4,5,9,6,2,7,3,6,2,1,2,3,7,4,0,5,1,4,0,9,};
int main ()
{

freopen ("cifra.in","r",stdin);
freopen ("cifra.out","w",stdout);
scanf("%i",&t);

for(i=1;i<=t;i++){
	     n[0]=0;
	     scanf("%s",&n);
	     long l;

	     l=strlen(n);

	     if(l>=2){
	     x=(n[l-2]-'0')*10+(n[l-1]-'0');
	       }
	     else x=n[l-1]-'0';
	     x=a[x];
	     printf("%i\n",x);
	      }
return 0;
}