#include<stdio.h>
#include<string.h>
using namespace std;
int v[]={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};



int main()
{int t,i,l,x;
 char s[102];
freopen("cifra.in","r",stdin);
freopen("cifra.out","w",stdout);
scanf("%d\n",&t);
 for(i=1;i<=t;i++)
  {gets(s);
   l=strlen(s);
   if(l==1)
    x=s[l-1]-'0';
   else
    x=(s[l-1]-'0')+10*(s[l-2]-'0');
   printf("%d\n",v[x]);

  }

return 0;
}