#include<fstream.h>
#include<math.h>

long long k[100]={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};

int main()
{	ifstream f("cifra.in");
	ofstream g("cifra.out");
	unsigned t,i;
	unsigned long long n;
	f>>t;
	for(i=1;i<=t;i++)
	{       f>>n;
		if(n<=100) g<<k[n-1]<<'\n';
		else g<<k[n%10-1]<<'\n';
	}
	return 0;
}