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

    -100.upto(100) do |y|
      -100.upto(100) do |x|
        d1 = Math.sqrt((y-y1) ** 2 + (x-x1) ** 2)
        d2 = Math.sqrt((y-y2) ** 2 + (x-x2) ** 2)
        d3 = Math.sqrt((y-y3) ** 2 + (x-x3) ** 2)

        min_d = [d1,d2,d3].min

        if d1+d2+d3 == (2 + Math.sqrt(2)) * min_d
          puts [x, y].join(' ')
          return
        end
      end
    end

    puts -1
  end
end

Yukicoder.new