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

#define dim 101

int main()
{
	freopen("cifra.in","r",stdin);
	freopen("cifra.out","w",stdout);

	long long unsigned a[dim],n,i,nr;

	int b[102]={0,1,5,2,8,3,9,2,8,7,8,9,3,0,6,1,7,0,6,5,6,7,1,8,4,9,5,8,4,3,4,5,9,6,2,7,3,6,2,1,2,3,7,4,0,5,1,4,0,9,0,1,5,2,8,3,9,2,8,7,8,9,3,0,6,1,7,0,6,5,6,7,1,8,4,9,5,8,4,3,4,5,9,6,2,7,3,6,2,1,2,3,7,4,0,5,1,4,0,9,0};

	scanf("%llu", &n);

	char s[101];

	for(i=1; i<=n; ++i)
	{
		scanf("%s", s);

		if(strlen(s)<=2)

			nr=atoi(s);

		else
		{
			int cc=strlen(s);

			nr=(s[cc-2]-'0')*10+s[cc-1];
		}
		printf("%llu\n", b[nr]);
	}
	return 0;
}