Problem:
Score : 200 points

Problem 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.

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 1

0 0 0 1

Sample Output 1

-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.

Sample Input 2

2 3 6 6

Sample Output 2

3 10 -1 7

Sample Input 3

31 -41 -59 26

Sample Output 3

-126 -64 -36 -131

Solution in C (GCC 9.2.1) (judge verdict: Accepted)

/*  ex 7_1
    shu_t */

#include <stdio.h>

//def point: coodinates
typedef struct point{
    int x_elem;
    int y_elem;
}point;

//vertex movement
point shift_point(point vertex, int x, int y){
    point new_vertex;//after movement
    new_vertex.x_elem = vertex.x_elem + x;//add second argument
    new_vertex.y_elem = vertex.y_elem + y;//add third argument
    return new_vertex;
}

int main(void){
    point vertex1,vertex2,vertex3,vertex4;//vertexi: No.i coodinates
    int dif_x,dif_y;//difference vertex1 and vertex2
    //input vertex1 and vertex2
    scanf("%d %d %d %d",&vertex1.x_elem,&vertex1.y_elem,&vertex2.x_elem,&vertex2.y_elem);
    //calculate difference
    dif_x = vertex1.x_elem - vertex2.x_elem;
    dif_y = vertex1.y_elem - vertex2.y_elem;
    //decide vertex3 and vertex4
    vertex3 = shift_point(vertex2, dif_y, -dif_x);
    vertex4 = shift_point(vertex1, dif_y, -dif_x);
    //output answer
    printf("%d %d %d %d",vertex3.x_elem,vertex3.y_elem,vertex4.x_elem,vertex4.y_elem);
    return 0;
}