# frozen_string_literal: true

def solve
  x = [[X1, Y1], [X2, Y2], [X3, Y3]].permutation.find do |p1, p2, p3|
    a = (p1[0] - p2[0])**2 + (p1[1] - p2[1])**2
    b = (p2[0] - p3[0])**2 + (p2[1] - p3[1])**2
    c = (p3[0] - p1[0])**2 + (p3[1] - p1[1])**2
    a == b && a * 2 == c
  end
  if x.nil?
    -1
  else
    a = x[0][0] - x[1][0] + x[2][0]
    b = x[0][1] - x[1][1] + x[2][1]
    [a, b].join(' ')
  end
end

X1, Y1, X2, Y2, X3, Y3 = gets.split.map(&:to_i)

puts solve