#include <iostream>
#include <fstream>
using namespace std;
int main()
{
    ifstream f ("cifra.in");
    ofstream g ("cifra.out");

    int nr,t,a[100],p=1,n,s=0,i,j;

    f>>t;

    for(i=1;i<=t;i++)
    {
        f>>nr;
        p=1;
        for(j=1;j<=i;j++)
        {
            p=p*i;
        }
        s=s+p;
        g<<s%10<<"\n";
    }

    return 0;
}