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

using namespace std;

int main()
{
	int i,t;
	unsigned long long suma=0,a[102];
	char c[102];
	
	ifstream f("cifra.in");
	ofstream g("cifra.out");

	for(i=0; i<=99; i++)
		if(i%10%2==0 && i!=2 && i%100%4==0)
		{
			suma=suma+pow( (i%10),4 );
			a[i]=suma%10;
			suma=suma%10;
		}
		else
		{
			suma=suma+pow( (i%10),(i%4) );
			a[i]=suma%10;
			suma=suma%10;
		}
		
	f>>t;
	
	for(i=1; i<=t; i++)
	{
		f>>c;
		g<<a[i%100]<<endl;
	}
}