import java.io.IOException;
import java.util.InputMismatchException;

public class Main {
	double EPS = 1e-12;

	class Point {
		int x, y;

		Point(int x, int y) {
			this.x = x;
			this.y = y;
		}
	}

	Point sub(Point a, Point b) {
		return new Point(a.x - b.x, a.y - b.y);
	}

	double dot(Point a, Point b) {
		return a.x * b.x + a.y * b.y;
	}

	int length(Point a, Point b) {
		return (a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y);
	}

	boolean f(double k) {
		return Math.abs(k) < EPS;
	}

	boolean check(Point[] p) {
		for (int i = 0; i < 4; i++) {
			boolean f = false;
			int[] len = new int[3];
			int id = 0;
			for (int j = 0; j < 4; j++) {
				if (i == j) {
					continue;
				}
				len[id++] = length(p[i], p[j]);
			}
			if (len[0] == len[1] && len[0] * 2 == len[2]) {
				f = true;
			}
			if (len[0] == len[2] && len[0] * 2 == len[1]) {
				f = true;
			}
			if (len[1] == len[2] && len[1] * 2 == len[0]) {
				f = true;
			}
			if (!f) {
				return false;
			}
		}
		return true;
	}

	void run() {
		MyScanner sc = new MyScanner();

		Point[] p = new Point[4];
		for (int i = 0; i < 3; i++) {
			p[i] = new Point(sc.nextInt(), sc.nextInt());
		}

		for (int x = -300; x <= 300; x++) {
			for (int y = -300; y <= 300; y++) {
				p[3] = new Point(x, y);
				if (check(p)) {
					System.out.println(x + " " + y);
					return;
				}
			}
		}
		System.out.println(-1);
	}

	public static void main(String[] args) {
		new Main().run();
	}

	public void mapDebug(int[][] a) {
		System.out.println("--------map display---------");
		for (int i = 0; i < a.length; i++) {
			for (int j = 0; j < a[i].length; j++) {
				System.out.printf("%3d ", a[i][j]);
			}
			System.out.println();
		}
		System.out.println("----------------------------" + '\n');
	}

	class MyScanner {
		int read() {
			try {
				return System.in.read();
			} catch (IOException e) {
				throw new InputMismatchException();
			}
		}

		boolean isSpaceChar(int c) {
			return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
		}

		boolean isEndline(int c) {
			return c == '\n' || c == '\r' || c == -1;
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		int[] nextIntArray(int n) {
			int[] array = new int[n];
			for (int i = 0; i < n; i++)
				array[i] = nextInt();
			return array;
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		long[] nextLongArray(int n) {
			long[] array = new long[n];
			for (int i = 0; i < n; i++)
				array[i] = nextLong();
			return array;
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		double[] nextDoubleArray(int n) {
			double[] array = new double[n];
			for (int i = 0; i < n; i++)
				array[i] = nextDouble();
			return array;
		}

		String next() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isSpaceChar(c));
			return res.toString();
		}

		String[] nextStringArray(int n) {
			String[] array = new String[n];
			for (int i = 0; i < n; i++)
				array[i] = next();

			return array;
		}

		String nextLine() {
			int c = read();
			while (isEndline(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isEndline(c));
			return res.toString();
		}
	}
}