using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.IO;
using System.Numerics;  // 参照

class _Class
{
  void _Do()
  {
    var N = Split.longs()[0];
    long sum = 0;
    for (long jump=1;;jump++)
    {
      sum += jump;
      if (N == sum)
      {
        Console.WriteLine("YES");
        Console.WriteLine(jump);
        return;
      } else if (N<sum)
      {
        Console.WriteLine("NO");
        return;
      }
    }
  }

  static void Main(string[] args)
  {
    new _Class()._Do();
  }
}

//
static class Split
{
  // 1
  public static string[] strings()
  {
    return Console.ReadLine().Split();
  }

  // [2.1] -2,147,483,648 ~ +2,147,483,647
  public static int[] ints()
  {
    var _s = Console.ReadLine().Split();

    var x = new int[_s.Length];
    for (var i = 0; i < _s.Length; i++)
      x[i] = int.Parse(_s[i]);

    return x;
  }

  // [2.2] 
  // -9,223,372,036,854,775,808 ~ 
  // +9,223,372,036,854,775,807
  public static long[] longs()
  {
    var _s = Console.ReadLine().Split();

    var x = new long[_s.Length];
    for (var i = 0; i < _s.Length; i++)
      x[i] = long.Parse(_s[i]);

    return x;
  }

  public static BigInteger[] bigs()
  {
    var _s = Console.ReadLine().Split();

    var x = new BigInteger[_s.Length];
    for (var i = 0; i < _s.Length; i++)
      x[i] = BigInteger.Parse(_s[i]);

    return x;
  }
}