import bisect
import copy
import decimal
import fractions
import heapq
import itertools
import math
import random
import sys
from collections import Counter, deque,defaultdict
from functools import lru_cache,reduce
from heapq import heappush,heappop,heapify,heappushpop,_heappop_max,_heapify_max
def _heappush_max(heap,item):
    heap.append(item)
    heapq._siftdown_max(heap, 0, len(heap)-1)
def _heappushpop_max(heap, item):
    if heap and item < heap[0]:
        item, heap[0] = heap[0], item
        heapq._siftup_max(heap, 0)
    return item
from math import gcd as GCD
read=sys.stdin.read
readline=sys.stdin.readline
readlines=sys.stdin.readlines

x1,y1,x2,y2,x3,y3=map(int,read().split())
if (x1-x2)**2+(y1-y2)**2==(x2-x3)**2+(y2-y3)**2:
    x1,y1,x2,y2=x2,y2,x1,y1
elif (x1-x3)**2+(y1-y3)**2==(x2-x3)**2+(y2-y3)**2:
    x1,y1,x3,y3=x3,y3,x1,y1
if (x1-x2)**2+(y1-y2)**2!=(x1-x3)**2+(y1-y3)**2:
    print(-1)
    sys.exit()
if (x2-x1)*(x3-x1)+(y2-y1)*(y3-y1)!=0:
    print(-1)
    sys.exit()
print(x2+x3-x1,y2+y3-y1)