class A {
    int x = 1;;
    int  getX()       { return x;   }
    void setX(int x)  { this.x = x; }
}

class B extends A {
    int x = 2, y = 3;
    int  getX()       { return x;   }
    void setX(int x)  { this.x = x; }
    int  getY()       { return y;   }
    void setY(int y)  { this.y = y; }
}

class C extends B {
    int y = 5;
    int  getY()       { return y;   }
    void setY(int y)  { this.y = y; }
}

class RP30_1 {

    public static void main(String[] args) {   
        C c = new C();
	A a = c;
	System.out.println(a.x);
	System.out.println(c.x);
	System.out.println(c.y);
	System.out.println(((C)a).x);
	System.out.println(((B)a).x);
	System.out.println(((A)c).x);
	System.out.println(((B)c).x);
	System.out.println(((B)c).y);
	System.out.println();
	System.out.println(a.getX());
	System.out.println(c.getX());
	System.out.println(c.getY());
	System.out.println(((C)a).getX());
	System.out.println(((B)a).getX());
	System.out.println(((A)c).getX());
	System.out.println(((B)c).getX());
	System.out.println(((B)c).getY());
    }
}