x1, y1, x2, y2, x3, y3 = map(int, input().split())

p1 = (x1, y1)
p2 = (x2, y2)
p3 = (x3, y3)

for a, b, c in [(p1, p2, p3), (p1, p3, p2), (p2, p1, p3)]:
    dx1 = b[0] - a[0]
    dy1 = b[1] - a[1]
    d1 = dx1 ** 2 + dy1 ** 2
    dx2 = c[0] - b[0]
    dy2 = c[1] - b[1]
    d2 = dx2 ** 2 + dy2 ** 2
    if dx1 * dx2 + dy1 * dy2 == 0 and d1 == d2:
        print(c[0] - dx1, c[1] - dy1)
        exit()
print(-1)