defmodule Main do
  def main do
    IO.read(:line)
    |> String.trim()
    |> String.split()
    |> Enum.map(&String.to_integer/1)
    |> solve
    |> IO.puts()
  end

  def solve([x, y]) do
    if {x, y} in locations(), do: "YES", else: "NO"
  end

  def locations do
    locations1 = [{0, 0}] |> search_rec([])
    locations2 = locations1 |> search_rec([])
    locations3 = locations2 |> search_rec([])

    [locations1, locations2, locations3]
    |> Enum.concat()
    |> Enum.uniq()
  end

  def search_rec([], result) do
    result
  end

  def search_rec([{x, y} | t], result) do
    t
    |> search_rec(
      result
      |> Enum.concat([
        {x - 2, y - 1},
        {x - 2, y + 1},
        {x - 1, y - 2},
        {x - 1, y + 2},
        {x + 1, y - 2},
        {x + 1, y + 2},
        {x + 2, y - 1},
        {x + 2, y + 1}
      ])
    )
  end
end