#include <stdio.h>
#include <math.h>
int v[101]={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};
int main()
{
	int t,i,j;
	long int n;
	FILE *f,*g;
	f=fopen("cifra.in","r");
	g=fopen("cifra.out","w");
	fscanf(f,"%d",&t);
	for(i=0;i<t;i++)
	{
		fscanf(f,"%ld",&n);
		if(n<=100)
			fprintf(g,"%d\n",v[n-1]);
		else
		{
			if(!(n%10))
				fprintf(g,"%d\n",0);
			else
			{
				j=n%100;
				fprintf(g,"%d\n",v[j-1]);
			}
		}
	}
	fcloseall();
	return 0;
}