class Ex1_1_1 {
  public static void main(String[] args) {
    int x, y, t;
    x = 2;
    y = 5;
    System.out.println("x = " + x + " / y = " + y);
    t = x;
    x = y;
    y = t;
    System.out.println("x = " + x + " / y = " + y);
  }
}