#include<fstream>
#include<iostream>
using namespace std;
int main()
{

    ifstream f("cifra.in");
    ofstream g("cifra.out");
    int n, s=0;
    f >> n;
    for(long  i=1; i<=n; i++)
    {
        int t=1;
        for(long j=1; j<=i; j++)
        {
            t=t*i;

        }
        s=s+t;
g << s%10 << "\n";

    }

    f.close();
    g.close();
    return 0;



}