#include <stdio.h>
#include <stdlib.h>
#include <math.h>


int main(void) {
  int i, j, a, b, f = 0;
  double ra[3], rb[3], l[3], x, y;
  
  for (i = 0; i < 3; i++) {
    scanf("%d %d", &a, &b);
    ra[i] = (double)a;
    rb[i] = (double)b;
  }

  for (i = 0; i < 3; i++)
    l[i] = sqrt(pow(ra[i] - ra[(i + 1) % 3], 2.0) + pow(rb[i] - rb[(i + 1) % 3], 2.0));

  x = y = 0.0;
  for (i = 0; i < 3; i++) {
    if (l[i] == l[(i + 1) % 3] && l[i] - l[(i + 2) % 3] <= 1e-6) {
      switch (i) {
        case 0:
          x = ra[0] - ra[1] + ra[2];
          y = rb[0] - rb[1] + rb[2];
          break;
        case 1:
          x = ra[0] + ra[1] - ra[2];
          y = rb[0] + rb[1] - rb[2];
          break;
        case 2:
          x = -ra[0] + ra[1] + ra[2];
          y = -rb[0] + rb[1] + rb[2];
          break;
      }
      f = 1;
    }
  }
  if (f == 1)
    printf("%d %d", (int)x, (int)y);
  else
    printf("-1");

  return EXIT_SUCCESS;
}