import itertools
import math
x1, y1, x2, y2, x3, y3 = map(int, input().split())
L = [(x1, y1),(x2, y2),(x3, y3)]
for x, y, z in itertools.permutations(L):
    if math.hypot(x[0]-y[0], x[1]-y[1]) != math.hypot(z[0]-y[0], z[1]-y[1]):
        continue
    a, b = (x[0]-y[0],x[1]-y[1])
    c, d = (z[0]-y[0],z[1]-y[1])
    if (a, b) == (-d, c) or (a, b) == (d, -c):
        print(x[0]+z[0]-y[0], x[1]+z[1]-y[1])
        break
else:
    print(-1)