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#!/usr/bin/env python3
from collections import deque
def not_square(A, B, C):
"""Return False is ABC is a square angle, True otherwise."""
return (B[0]-A[0])*(B[0]-C[0]) + (B[1]-A[1])*(B[1]-C[1])
def parallelogram_last_point(A, B, C):
"""Return the (x, y) coordinates of the point D of the parallelogram
ABCD.
"""
return A[0] - B[0] + C[0], A[1] - B[1] + C[1]
with open('hcn.inp') as fi, open('hcn.out', 'w') as fo:
d = deque(tuple(map(int, line.split())) for line in fi.readlines())
while not_square(*d): d.rotate()
print(*parallelogram_last_point(*d), file=fo)
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