puts [[-5, -2], [-5, 2], [-2, -1], [-2, 1], [-3, -2], [-3, 2], [-4, -1], [-1, -4], [-1, -2], [-2, -5], [-1, 0], [-1, 2], [-2, 3], [2, -1], [1, -4], [1, 0], [1, -2], [1, 2], [0, -1], [-4, 1], [-2, -3], [-1, 4], [-2, 5], [2, 1], [1, 4], [0, 1], [3, -2], [2, -5], [2, -3], [3, 2], [2, 3], [2, 5], [5, -2], [5, 2], [4, -1], [4, 1]].include?(gets.split.map(&:to_i)) ? :YES : :NO