#include <stdio.h>
#include <string.h>

int rez [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};
int T, cur;
char nr[200];

int main()
{
	freopen("cifra.in", "r", stdin);
	freopen("cifra.out", "w", stdout);
	for (scanf("%d ", &T); T; T--)
	{
		scanf("%s\n", &nr);
		cur = nr[strlen(nr)-1] - '0';
		if (strlen(nr) > 1) cur = ( nr[strlen(nr)-2] -'0' ) * 10 + cur;
		printf("%d\n", rez[cur]);
	}
	return 0;
}