public class Int implements OrderableElement {

   private int n;
   public Int(int n) {
      this.n = n;
   }

   public boolean elEquals(Element y) {   // Element interface
      return y instanceof Int && ((Int)y).n == this.n;
   }
   public boolean elLessThan(Element y) {
      return y instanceof Int && this.n < ((Int)y).n;
   }
   public boolean elGreaterThan(Element y) {
      return y instanceof Int && this.n > ((Int)y).n;
   }
   public Set belongsTo() { return null; }
   public String toString() { return ""+n; }
}