lib C
  fun strtoll(s : UInt8*, p : UInt8**, b : Int32) : Int64
end

class String
  def to_i64
    C.strtoll(self, nil, 10)
  end
end

def func(n)
  x = 0i64
  while n > 0
    x += n
    n //= 2
  end
  x
end

n = read_line.to_i64
x = (1..n).bsearch { |x| func(x) >= n }
puts func(x.not_nil!) == n ? "YES" : "NO"