#include<cstdio>
#include<cstring>
using namespace std;
const int a[101]={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 t,x,n;
char s[101];
scanf("%i\n",&t);
while(t)
{
scanf("%s\n",&s);
n=strlen(s);
if(n>1)
    { 
		x=s[n-2]-'0';
		x*=10;
		x+=s[n-1]-'0';
     }
  else x=s[0]-'0';
printf("%i\n",a[x]);  
t--;
}
return 0;
}