#include <stdio.h>
#include <string.h>

int s,t,nr;
int v[]={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};
char nrs[102];


int main(){
    int i,j;
    
    freopen("cifra.in","r",stdin);
    freopen("cifra.out","w",stdout);
    
  
    scanf("%d",&t);
    gets(nrs);
    for (i=0;i<t;i++){
        gets(nrs);
        if (strlen(nrs)==1) nr=nrs[0]-48-1;
        else nr=nrs[strlen(nrs)-1]-48+10*(nrs[strlen(nrs)-2]-48);
        printf("%d\n",v[nr]);
        }
    return 0;        
}