#include "IntervalIntersections.cpp"

int main(int argc, char **argv)
{
  int i;
  class IntervalIntersections TheClass;
  int retval;
  int x1;
  int y1;
  int x2;
  int y2;

  if (argc != 2) { fprintf(stderr, "usage: a.out num\n"); exit(1); }

/*
  x1 = ;
  y1 = ;
  x2 = ;
  y2 = ;
*/


 if (atoi(argv[1]) == 0) {
    x1 = 3;
    y1 = 6;
    x2 = 1;
    y2 = 2;
  }

 if (atoi(argv[1]) == 1) {
    x1 = 1;
    y1 = 2;
    x2 = 3;
    y2 = 6;
  }

 if (atoi(argv[1]) == 2) {
    x1 = 1;
    y1 = 10;
    x2 = 2;
    y2 = 5;
  }

 if (atoi(argv[1]) == 3) {
    x1 = 4;
    y1 = 5;
    x2 = 1;
    y2 = 4;
  }

 if (atoi(argv[1]) == 4) {
    x1 = 1;
    y1 = 1;
    x2 = 1000000;
    y2 = 1000000;
  }

  retval = TheClass.minLength(x1, y1, x2, y2);
  cout << retval << endl;

  exit(0);
}