X1, Y1, X2, Y2, X3, Y3 = map(int, raw_input().split())

X = [0] * 4
Y = [0] * 4

X[0] = X1
X[1] = X2
X[2] = X3

Y[0] = Y1
Y[1] = Y2
Y[2] = Y3


def check():
    list = []
    for i in xrange(4):
        for j in xrange(i + 1, 4):
            dx = X[i] - X[j]
            dy = Y[i] - Y[j]
            list.append(dx * dx + dy * dy)

    list.sort()
    l = list[0]
    return list[0] == l and list[1] == l and list[2] == l and list[3] == l and list[4] == 2 * l and list[5] == 2 * l


def solve():
    for x in xrange(-200, 200 + 1):
        for y in xrange(-200, 200 + 1):
            X[3] = x
            Y[3] = y
            if check():
                print x, y
                return

    print -1


if __name__ == '__main__':
    solve()