#include <iostream>
#include <fstream>
#include <math.h>
using namespace std;
int main(void)
{
	ifstream in("cifra.in");
	ofstream out("cifra.out");
	int n=0,i,t,uc=0;
	in>>t;
	int a[t];
	for (i=1;i<=t;i++)
	in>>a[i];
	for (i=1;i<=t;i++)
		{n=n+pow(i,i);
		uc=n%10;
		out<<uc<<endl;}
	
	
	
	
	in.close();
	out.close();
	return 0;
}