import sys,numpy as np,itertools
input=lambda:sys.stdin.readline().rstrip()
temp=list(map(int,input().split()))
points=[np.array(temp[i:i+2]) for i in range(0,6,2)]
n=lambda x:np.linalg.norm(x,ord=2)
for i in itertools.permutations(points,3):
	if np.dot(i[0]-i[1],i[0]-i[2])!=0 or n(i[0]-i[1])!=n(i[0]-i[2]):
		continue
	print(*(i[1]+i[2]-i[0]))
	break
else:
	print(-1)