import sys

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

def main():
    a = LI()
    xy = [a[:2], a[2:4], a[4:]]
    for i in range(3):
        for k in range(3):
            if i == k: continue
            j = 3 - i - k
            dx1=xy[j][0]-xy[i][0]
            dy1=xy[j][1]-xy[i][1]
            dx2=xy[k][0]-xy[j][0]
            dy2=xy[k][1]-xy[j][1]
            if (dx1,dy1)==(-dy2,dx2):
                print(xy[i][0]+dx2, xy[i][1]+dy2)
                exit()
    print(-1)

main()