require 'matrix'

X1, Y1, X2, Y2, X3, Y3 = gets.split.map(&:to_i)
X = [0, X1, X2, X3]
Y = [0, Y1, Y2, Y3]
def f(a, b, c)
  v1 = Vector[X[b] - X[a], Y[b] - Y[a]]
  v2 = Vector[X[c] - X[b], Y[c] - Y[b]]
  v1.dot(v2) == 0 and v1.r == v2.r
end
ans = if f(1, 3, 2)
        "#{X1 + X2 - X3} #{Y1 + Y2 - Y3}"
      elsif f(1, 2, 3)
        "#{X1 - X2 + X3} #{Y1 - Y2 + Y3}"
      elsif f(2, 1, 3)
        "#{-X1 + X2 + X3} #{-Y1 + Y2 + Y3}"
      else
        -1
      end
puts ans