using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		var dic = new Dictionary<uint, int>();
		var rnd = new XorShiftModoki(N);
		for(int i=0;i<10000001;i++){
			var t = rnd.Generate();
			if(!dic.ContainsKey(t)) dic.Add(t,0);
			dic[t]++;
		}
		
		var l = dic.Keys.ToArray();
//Console.WriteLine(l.Length);
		Array.Sort(l);
		int tot = 0;
		for(int i=0;i<l.Length;i++){
			tot += dic[l[i]];
			//Console.WriteLine(l[i]);
			if(tot >= 10000001/2 + 1){
				Console.WriteLine(l[i]);
				return;
			}
		}
		
		
	}
	uint N;
	public Sol(){
		N = (uint) ri();
	}
	public Sol(uint n){
		N = n;
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
	static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));}
	static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));}
	static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));}
}

class XorShiftModoki{
	public uint x = 0, y = 1, z = 2, w = 3;
	public uint Generate() { 
	    uint t = (x^(x<<11));
	    x = y;
	    y = z;
	    z = w;
	    w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)); 
	    return w;
	}
	public XorShiftModoki(uint seed){
		x = seed;
	}
}