import java.lang.*;

class One {
	int first = 100;
	int func() { return first; }
	}
	class Two extends One {
		int first = 200;
		int func() { return -first; }
		}
		public class Override {
			public static void main(String args[]) {
				Two obj2 = new Two();
				System.out.println(obj2.first);
				System.out.println(obj2.func());
				One obj1 = (One) obj2;
				System.out.println(obj1.first);
				System.out.println(obj1.func());
			}
		}