X = [0] * 3
Y = [0] * 3
X[0], Y[0], X[1], Y[1], X[2], Y[2] = map(int, input().split())

kyori = []

for i in range(2):
    for j in range(i + 1, 3):
        kyori.append(round((abs(X[i] - X[j]) ** 2 + abs(Y[i] - Y[j]) ** 2) ** 0.5, 3))

if len(set(kyori)) > 2:
    exit(print(-1))

kyori1, kyori2 = max(kyori), min(kyori)

for x in range(-100, 101, 1):
    for y in range(-100, 101, 1):
        l = []
        for i in range(3):
            l.append(round((abs(X[i] - x) ** 2 + abs(Y[i] - y) ** 2) ** 0.5, 3))
            
        if len(set(l)) == 2:
            
            l1, l2 = max(l), min(l)
            if kyori1 == l1 and kyori2 == l2:
                print(x, y)
                exit()

print(-1)