using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;

class Program
{
    public void Solve()
    {
        int x = Reader.Int();
        const int N = (int)1e8;

        if (x == 0)
            for (int i = 0; i < N; i++)
                BitCount32a(i);
        else if (x == 1)
            for (int i = 0; i < N; i++)
                BitCount32b((uint)i);
        else if (x == 2)
            for (int i = 0; i < N; i++)
                BitCount64a(i);
        else if (x == 3)
            for (int i = 0; i < N; i++)
                BitCount64b((ulong)i);


        Console.WriteLine(0);
    }

    static int BitCount32a(int bits)
    {
        bits = (bits & 0x55555555) + (bits >> 1 & 0x55555555);
        bits = (bits & 0x33333333) + (bits >> 2 & 0x33333333);
        bits = (bits & 0x0f0f0f0f) + (bits >> 4 & 0x0f0f0f0f);
        bits = (bits & 0x00ff00ff) + (bits >> 8 & 0x00ff00ff);
        return (bits & 0x0000ffff) + (bits >> 16 & 0x0000ffff);
    }

    static int BitCount32b(uint x)
    {
        x -= (x >> 1) & 0x55555555u;
        x = (x & 0x33333333u) + ((x >> 2) & 0x33333333u);
        return (int)((((x + (x >> 4)) & 0x0f0f0f0fu) * 0x01010101u) >> 24);
    }

    static int BitCount64a(long x)
    {
        x = (x & 0x5555555555555555) + (x >> 1 & 0x5555555555555555);
        x = (x & 0x3333333333333333) + (x >> 2 & 0x3333333333333333);
        x = (x & 0x0f0f0f0f0f0f0f0f) + (x >> 4 & 0x0f0f0f0f0f0f0f0f);
        x = (x & 0x00ff00ff00ff00ff) + (x >> 8 & 0x00ff00ff00ff00ff);
        x = (x & 0x0000ffff0000ffff) + (x >> 16 & 0x0000ffff0000ffff);
        return (int)((x & 0x00000000ffffffff) + (x >> 32 & 0x00000000ffffffff));
    }

    static int BitCount64b(ulong x)
    {
        x -= (x >> 1) & 0x5555555555555555UL;
        x = (x & 0x3333333333333333UL) + ((x >> 2) & 0x3333333333333333UL);
        return (int)(((x + (x >> 4)) & 0x0f0f0f0f0f0f0f0fUL) * 0x0101010101010101UL >> 56);
    }

}



class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
    private static TextReader reader = Console.In;
    private static readonly char[] separator = { ' ' };
    private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
    private static string[] A = new string[0];
    private static int i;
    private static void Init() { A = new string[0]; }
    public static void Set(TextReader r) { reader = r; Init(); }
    public static void Set(string file) { reader = new StreamReader(file); Init(); }
    public static bool HasNext() { return CheckNext(); }
    public static string String() { return Next(); }
    public static int Int() { return int.Parse(Next()); }
    public static long Long() { return long.Parse(Next()); }
    public static double Double() { return double.Parse(Next()); }
    public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
    public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
    public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
    public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }
    public static string Line() { return reader.ReadLine().Trim(); }
    private static string[] Split(string s) { return s.Split(separator, op); }
    private static string Next() { CheckNext(); return A[i++]; }
    private static bool CheckNext()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return CheckNext();
        A = Split(line);
        i = 0;
        return true;
    }
}