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

using namespace std;

int main()
{
	int i,t,x1,x2,l;
	FILE *f,*g;
	
	f=fopen("input.txt","r");
	g=fopen("output2.txt", "w");
	
	char c[102];
	int      a[102]=  { 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 };
	

		
	fscanf(f,"%d",&t);
	
	for(i=1; i<=t; i++)
	{
		fscanf(f,"%s",c);
		l=strlen(c);
		
		if(l==1) 
		x1=0;
		else
		x1=c[l-2]-'0';
		x2=c[l-1]-'0';
		
		fprintf(g,"%d\n",a[x1*10+x2]);
	}
	return 0;
}