// this1 DIS

class Person {
    String name;
    Person friend;
    
    void test() {
	print(this);
	print(friend);
	System.out.println("====");
    }

    void print(Person p) {
	System.out.println(p.name);
    }

}

public class this1 {
    public static void main(String[] args) {
	
	Person A = new Person();
	Person B = new Person();
	A.name = "dis";
	B.name = "tyan";
	A.friend = B;
	B.friend = A;
	A.test();
	B.test();
    }

}

/* output
dis
tyan
====
tyan
dis
====
*/