#include<stdio.h>

int main()
{
	FILE *f = fopen("cifra.in", "r");
	FILE *g = fopen("cifra.out", "w");

	
	int T, n, i;
	char n1, n2, rez;
	int v[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, 0};

	
	fscanf(f, "%d%c", &T, &rez);
	
	for(i=1;i<=T;i++)
	{
		n1 = n2 = rez = '0';
		do
		{
			n1 = n2;
			n2 = rez;
			fscanf(f, "%c", &rez);
		}while(rez != '\n');
		
		n = ((n1 - '0')*10 + (n2 - '0'));
		fprintf(g, "%d\n", v[n]);
	}
	fscanf(f, "%c", &rez);
	return 0;
}