#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int a[100]={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};
char ch[101];
int main ()
{
    freopen("cifra.in","r",stdin);
    freopen("cifra.out","w",stdout);
    int x,c,t,i;
	scanf ("%d\n",&t);
    for (i=1; i<=t; ++i)
    {
        gets(ch);
        x=strlen(ch);
        if (x>=2)
              c=(ch[x-2]-'0')*10+ch[x-1]-'0'; 
        else
             c=ch[0]-'0'; 
		printf ("%d\n",a[c]);
    }
    return 0;
}