x1, y1, x2, y2, x3, y3 = map(int, input().split())
p1, p2, p3 = x1 + y1 * 1j, x2 + y2 * 1j, x3 + y3 * 1j
li = [p1, p2, p3]

for i in range(3):
    v1 = li[1] - li[0]
    v2 = li[2] - li[0]
    #内積
    inner_product = (v1 * v2.conjugate()).real
    if inner_product == 0 and abs(v1) == abs(v2):
        v3 = li[0] + v1 + v2
        print(int(v3.real), int(v3.imag))
        break
    #リストを回転
    li.insert(0, li.pop())
else:
    print(-1)