#include <iostream>
#include <cstdio>
#include <stdio.h>
#include <fstream>
using namespace std;
int putere(int numarul)
{
	int p=1;
	for(int i=1; i<=numarul; i++)
		p=p*numarul;
	return p;
}
int main() 
{
    freopen("cifra.in","r+", stdin);
    freopen("cifra.out", "w", stdout);
	
	int n,s=0,cif;
	int sir[100];
	cin>>n;
	for(int i=1; i<=n; i++)
		cin>>sir[i];
	for(int j=1; j<=n; j++)
	{
		for(int i=1; i<=j; i++)
			s=s+putere(sir[i]);
		cif=s%10;
		s=0;
		cout<<cif<<endl;
	}

	
return 0;
}