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(){
		
		long l = 0, r = 1000000000;
		while(r - l > 1){
			long c = (l + r) / 2;
			if(csum(c) <= N){
				l = c;
			} else {
				r = c;
			}
		}
		Console.WriteLine(csum(l) == N ? "YES" : "NO");
	}
	
	long csum (long n){
		if(n == 0) return 0;
		long ret = 0;
		while(n > 0){
			ret += n;
			n >>= 1;
		}
		return ret;
	}
	
	long N;
	public Sol(){
		N = rl();
	}

	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));}
}