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 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>

int main(void) {
    int h, w;
    char a[100][100];
    //入力
    scanf("%d %d", &h, &w);
    for (int i = 0; i < h; i++) {
        scanf("%s", a[i]);
    }

    for (int i = 0; i < h; i++) {
        int flag = 0;
        for (int j = 0; j < w; j++) {
            if (a[i][j] == '#') { flag = 1; }
        }
        if (!flag) {
            for (int l = i; l < h - 1; l++) {
                for (int j = 0; j < w; j++) {
                    a[l][j] = a[l + 1][j];
                }
            }
            h--;
            i--;
        }
    }
    for (int i = 0; i < w; i++) {
        int flag = 0;
        for (int j = 0; j < h; j++) {
            if (a[j][i] == '#') { flag = 1; }
        }
        if (!flag) {
            for (int l = i; l < w - 1; l++) {
                for (int j = 0; j < h; j++) {
                    a[j][l] = a[j][l + 1];
                }
            }
            i--;
            w--;
        }
    }

    //出力
    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            printf("%c", a[i][j]);
        }
        printf("\n");
    }

    return 0;
}