#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};

int uc(char a[]) {
	int n=0,b=0;
	n=strlen(a);
	if (n==1)
		b=a[0]-'0';
	else 
		if (n==2)
			b=(a[0]-'0')*10+(a[1]-'0');
		else
			b=(a[n-2]-'0')*10+(a[n-1]-'0');
	return b;
}

int main() {
	int n;
	char nr[102];
	freopen("cifra.in","r",stdin);
	freopen("cifra.out","w",stdout);
	scanf("%d\n", &n);
	while (gets(nr)) {
		printf("%d\n",v[uc(nr)]);
		nr[0]=NULL;
	}
	return 0;
}