import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.NoSuchElementException;
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		new Main().run();
	}
	
	int inner_product(int x1,int y1,int x2,int y2) {
		return x1*x2+y1*y2;
	}
	
	void f(int x0,int y0,int x1,int y1,int x2,int y2) {
		x1-=x0;
		y1-=y0;
		x2-=x0;
		y2-=y0;
		if(inner_product(x1, y1, x2, y2)!=0)return;
		if(x1*x1+y1*y1!=x2*x2+y2*y2)return;
		System.out.println((x0+x1+x2)+" "+(y0+y1+y2));
		System.exit(0);
	}
	
	void run() {
		Scanner sc=new Scanner(System.in);
		int[] x=new int[3];
		int[] y=new int[3];
		for(int i=0;i<3;++i) {
			x[i]=sc.nextInt();
			y[i]=sc.nextInt();
		}
		f(x[0],y[0],x[1],y[1],x[2],y[2]);
		f(x[0],y[0],x[2],y[2],x[1],y[1]);
		f(x[1],y[1],x[0],y[0],x[2],y[2]);
		f(x[1],y[1],x[2],y[2],x[0],y[0]);
		f(x[2],y[2],x[0],y[0],x[1],y[1]);
		f(x[2],y[2],x[1],y[1],x[0],y[0]);
		System.out.println(-1);
	}
	
	void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}
}


class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }
    public double nextDouble() { return Double.parseDouble(next());}
}