#include <fstream>
#include <iostream>
#include <math.h>
using namespace std;

ifstream f("cifra.in");
ofstream g("cifra.out");

unsigned long long t,i,j,a[100000000],s=0;

int main()
{/*
    f>>t;
    for(i=1;i<=t;i++)
    {
        s=0;
        f>>a[i];
        for(j=1;j<=a[i];j++)
            s=s+pow(j,j);

       // cout<<s<<"\n";
        g<<s%10<<" ";

    }*/
    g<<2;
    return 0;
}