a=map(int,raw_input().split())
l=[complex(a[i],a[i+1]) for i in range(0,6,2)]
for i in l:
    b,c=[j for j in l if j!=i]
    d,e,f=[j.real**2+j.imag**2 for j in [i-b,i-c,b-c]]
    if 2*d==2*e==f:
        r=b+c-i
        print int(r.real),int(r.imag)
        exit()
print -1