p = [ float(v) for v in input().split() ]

p1, p2, p3 = p[:2], p [2:4], p[4:]
anslist = []

def length(start,end):
    l = ((end[0]-start[0])**2 + (end[1]-start[1])**2)
    return l

def vector_product(point1,point2,point3):
    s = abs( (point2[0] - point1[0]) * (point3[1] - point1[1]) - (point3[0] - point1[0]) * (point2[1] - point1[1]) )
    return s**2

def length_product(point1,point2,point3):
    s = length(point2,point1)*length(point3,point1)
    return s

def compare_two_product(point1,point2,point3):
    vp = (vector_product(point1,point2,point3))
    lp = (length_product(point1,point2,point3))

    if vp == lp and length(point2,point1) == length(point3,point1):
        x = int(point2[0]+point3[0]-point1[0])
        y = int(point2[1]+point3[1]-point1[1])
        anslist.append(x)
        anslist.append(y)

    return


compare_two_product(p1, p2, p3)
compare_two_product(p3, p1, p2)
compare_two_product(p2, p3, p1)

if anslist != []:
    print(anslist[0],anslist[1])
else:
    print(-1)