题目描述
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.
-----Constraints-----
- $|x_1|,|y_1|,|x_2|,|y_2| \leq 100$
- (x_1,y_1) ≠ (x_2,y_2)
- All values in input are integers.
-----Input-----
Input is given from Standard Input in the following format:
x_1 y_1 x_2 y_2
-----Output-----
Print x_3,y_3,x_4 and y_4 as integers, in this order.
-----Sample Input-----
0 0 0 1
-----Sample Output-----
-1 1 -1 0
(0,0),(0,1),(-1,1),(-1,0) is the four vertices of a square in counter-clockwise order.
Note that (x_3,y_3)=(1,1),(x_4,y_4)=(1,0) is not accepted, as the vertices are in clockwise order.
输入格式
见题面
输出格式
见题面