package state.one;

interface I {
  public int f();
  public int g();
  public void changeDirection();
}

class C implements I {
  private boolean state;
  private int i;
  private int j;
  public int f() {
    if (state)
      i += 26;
    else
      i -= 32;
    return i;
  }
  public int g() {
    if (state)
      j += 42;
    else
      j -= 27;
    return j;
  }
  public void changeDirection() {
    state = !state;
  }
}