#include<stdio.h>
#include<string.h>
int a,n,r[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};

char v[101];      
int l; 

int main()
{
freopen("cifra.in","r",stdin);
freopen ("cifra.out","w",stdout);
scanf("%d",&n);
for(int i=1;i<=n;i++)
	{scanf("%s", &v);

	l=strlen(v)-1;
    if(l>1)
      l=(v[l-1]-'0')*10+v[l]-'0';
	 else
	 l=v[l]-'0';

	printf("%d\n",r[l]);
	}
return 0;
}