import java.util.*;
/** Edge List for Scan Line Algorithm*/

class EdgeList {
  Vector v; // elements in list

  EdgeList() {
    v = new Vector();
  }

  /* Edge at position i */
  Edge elementAt(int i) {
    return (Edge)v.elementAt(i);
  }

  /* no of edges in list */
  int size() {
    return v.size();
  }
}