import sys
read=sys.stdin.buffer.read

import itertools
x1,y1,x2,y2,x3,y3=map(int,read().split())
p1=(x1,y1)
p2=(x2,y2)
p3=(x3,y3)

def dist(p,q): return (p[0]-q[0])**2 + (p[1]-q[1])**2
def is_sq(p1,p2,p3,p4):
  d1=dist(p1,p2)
  d2=dist(p2,p3)
  d3=dist(p1,p3)
  d4=dist(p3,p4)
  d5=dist(p4,p1)
  d6=dist(p2,p4)
  return d1==d2==d4==d5!=d6 and d6==d3==2*d1

ans=None
for (p,q,r) in itertools.permutations([p1,p2,p3]):
    s=tuple(p[i]+r[i]-q[i] for i in[0,1])
    if is_sq(p,q,r,s):
        ans=s
        break
if ans is None: print(-1)
else: print(*ans)