public class YetAnotherVector extends SimpleVector {

  int a, b;

  public YetAnotherVector(int x, int y) {
    this.a = x;
    this.b = y;
  }

  public YetAnotherVector add_constant_vector(int x, int y) {
    
    this.a += x;
    this.b += x;
    return this;
  }


}