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

def squeare(A, B, C) :
    r  = (B[0] - A[0]) * (C[0] - A[0]) + (B[1] - A[1]) * (C[1] - A[1])  
    AB = (B[0] - A[0]) * (B[0] - A[0]) + (B[1] - A[1]) * (B[1] - A[1])
    AC = (C[0] - A[0]) * (C[0] - A[0]) + (C[1] - A[1]) * (C[1] - A[1])
    if r == 0 and AB == AC:
        return True
    else:
        return False

def otherpoint(A, B, C):
    x = B[0] + C[0] - A[0]
    y = B[1] + C[1] - A[1]
    print(x, y)

r1 = squeare( (x1, y1), (x2, y2), (x3, y3) )
r2 = squeare( (x2, y2), (x3, y3), (x1, y1) )
r3 = squeare( (x3, y3), (x1, y1), (x2, y2) )

if r1 :
    otherpoint( (x1, y1), (x2, y2), (x3, y3) )
    exit()
if r2 :
    otherpoint( (x2, y2), (x3, y3), (x1, y1))
    exit()
if r3 :
    otherpoint( (x3, y3), (x1, y1), (x2, y2))
    exit()
print(-1)