output_description: Print x_3,y_3,x_4 and y_4 as integers, in this order.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      x_1 y_1 x_2 y_2
attempt: x1, y1, x2, y2 = map(int, input().split())
  
  
  def point_point_dist(xy1, xy2):
      x1, y1 = xy1
      x2, y2 = xy2
      return ((x2 - x1) ** 2 + (y2 - y1) ** 2) ** 0.5
  
  
  d12 = point_point_dist((x1, y1), (x2, y2))
  
  candidate = []
  for x3 in range(-200, 201):
      if x3 == x1 or x3 == x2:
          continue
      for y3 in range(-200, 201):
          if y3 == x1 or y3 == x2:
              continue
          if point_point_dist((x2, y2), (x3, y3)) == d12:
              candidate.append((x3, y3))
  # print(candidate)
  
  for xy3 in candidate:
      x3, y3 = xy3
      for x4 in range(-200, 201):
          for y4 in range(-200, 201):
              if (
                  point_point_dist((x4, y4), (x3, y3))
                  == point_point_dist((x4, y4), (x1, y1))
                  == d12
              ):
                  if point_point_dist((x1, y1), (x3, y3)) == point_point_dist(
                      (x2, y2), (x4, y4)
                  ):
                      print(x3, y3, x4, y4)
                      exit()
  
problem_description: Statement
  
  There is a square in the xy-plane. The coordinates of its four vertices are
  (x_1,y_1),(x_2,y_2),(x_3,y_3) and (x_4,y_4) in counter-clockwise order.
  (Assume that the positive x-axis points right, and the positive y-axis points
  up.)
  
  Takahashi remembers (x_1,y_1) and (x_2,y_2), but he has forgot (x_3,y_3) and
  (x_4,y_4).
  
  Given x_1,x_2,y_1,y_2, restore x_3,y_3,x_4,y_4. It can be shown that
  x_3,y_3,x_4 and y_4 uniquely exist and have integer values.
samples: [{"input": "0 0 0 1", "output": "-1 1 -1 0\n    \n\n(0,0),(0,1),(-1,1),(-1,0) is the four vertices of a square in counter-\nclockwise order. Note that (x_3,y_3)=(1,1),(x_4,y_4)=(1,0) is not accepted, as\nthe vertices are in clockwise order.\n\n* * *"}, {"input": "2 3 6 6", "output": "3 10 -1 7\n    \n\n* * *"}, {"input": "31 -41 -59 26", "output": "-126 -64 -36 -131"}]