# -*- coding: utf-8 -*-
"""
No.55 正方形を描くだけの簡単なお仕事です。
https://yukicoder.me/problems/no/55

"""
import sys
from sys import stdin
from collections import Counter
input = stdin.readline


def is_valid(x1, y1, x2, y2, x3, y3, x4, y4):
    lines = []
    lines.append((x1 - x2)**2 + (y1 - y2)**2)
    lines.append((x1 - x3)**2 + (y1 - y3)**2)
    lines.append((x1 - x4)**2 + (y1 - y4)**2)
    lines.append((x2 - x1)**2 + (y2 - y1)**2)
    lines.append((x2 - x3)**2 + (y2 - y3)**2)
    lines.append((x2 - x4)**2 + (y2 - y4)**2)
    lines.append((x3 - x2)**2 + (y3 - y2)**2)
    lines.append((x3 - x1)**2 + (y3 - y1)**2)
    lines.append((x3 - x4)**2 + (y3 - y4)**2)
    lines.append((x4 - x2)**2 + (y4 - y2)**2)
    lines.append((x4 - x3)**2 + (y4 - y3)**2)
    lines.append((x4 - x1)**2 + (y4 - y1)**2)
    res = Counter(lines).most_common()
    if len(res) != 2:
        return False
    if res[0][1] != 8:
        return False
    if res[1][1] != 4:
        return False
    if abs(res[0][0]*2 - res[1][0]) > 0.00001:
        return False
    return True


def solve(x1, y1, x2, y2, x3, y3):
    for y in range(-100, 101, 1):
        for x in range(-100, 101, 1):
            if is_valid(x1, y1, x2, y2, x3, y3, x, y):
                return x, y
    return None, None


def main(args):
    x1, y1, x2, y2, x3, y3 = map(int, input().split())
    x4, y4 = solve(x1, y1, x2, y2, x3, y3)
    if x4 is None or y4 is None:
        print(-1)
    else:
        print(x4, y4)


if __name__ == '__main__':
    main(sys.argv[1:])