class Yukicoder
  def initialize
    x1, y1, x2, y2, x3, y3 = gets.chomp.split.map(&:to_i)

    coords = [[x1,y1],[x2,y2],[x3,y3]]

    coords.permutation do |list|
      x1, y1, x2, y2, x3, y3 = *list.flatten
      d1 = Math.sqrt((x2-x1) ** 2 + (y2-y1) ** 2)
      d2 = Math.sqrt((x2-x3) ** 2 + (y2-y3) ** 2)

      if d1 == d2
        -100.upto(100) do |y|
          -100.upto(100) do |x|
            d3 = Math.sqrt((x-x1) ** 2 + (y-y1) ** 2)
            d4 = Math.sqrt((x-x3) ** 2 + (y-y3) ** 2)

            if d1 == d3 && d2 == d4 && (x2 != x || y2 != y)
              puts [x, y].join(' ')
              return
            end
          end
        end
      end
    end

    puts -1
  end
end

Yukicoder.new