public class PR553 {
public static void main(String[]args) {
  RectDomain<3> d0=[[-1,-1,23]:[32,32,23]:[33,1,0]];
  RectDomain<3> d1=[[0,-1,23]:[31,-1,23]];
  RectDomain<3> d2=[[0,32,23]:[31,32,23]];
  Domain<3> d = [[-1,-1,23]:[-1,32,23]:[1,1,1]] + [[32,-1,23]:[32,32,23]:[1,1,1]]
    + [[0,-1,23]:[31,-1,23]:[1,1,1]] + [[0,32,23]:[31,32,23]:[1,1,1]];
  System.out.println("d="+d);
  System.out.println("d.isRectangular()="+d.isRectangular());
  System.out.println("d="+d);
/*
  RectDomain<3> rd = (RectDomain<3>)d;
  System.out.println("rd="+rd);
*/
}}