x = list(map(int, input().split()))

flag = False

for i in range(4, -1, -2):
    a = x[2] - x[0]
    b = x[3] - x[1]
    c = x[4] - x[0]
    d = x[5] - x[1]

    if a * c + b * d == 0 and a * a + b * b == c * c + d * d:
        flag = True
        break

    x[0], x[i] = x[i], x[0]
    x[1], x[i + 1] = x[i + 1], x[1]

if flag:
    print(x[2] + x[4] - x[0], x[3] + x[5] - x[1])
else:
    print(-1)