Z=list(map(int,input().split()))
x=Z[0::2]
y=Z[1::2]
import itertools
p=list(itertools.permutations([0,1,2]))
for i,j,k in p:
	if y[i]-y[j]==x[k]-x[j] and x[j]-x[i]==y[k]-y[j]:
		x=x[i]+x[k]-x[j]
		y=y[i]+y[k]-y[j]
		print(x,y)
		break
else:	print(-1)