#include <stdio.h>
#include <string.h>
#define DIM 101
char n[DIM];
int v[DIM-1]={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};
int main()
{ freopen("cifra.in","r",stdin);freopen("cifra.out","w",stdout);
   int i,t,x,cifra; 
  scanf("%d",&t);
    for(i=1; i<=t; ++i)
    {
             scanf("%s",&n);
             x=strlen(n);
             if(x>=2)
               cifra=(n[x-2]-'0')*10+n[x-1];
             else 
               cifra=n[x]-'0';
             printf("%d\n",v[cifra]);
    }
 return 0;
}