import java.io.* ;
public class abc

public static void main(String args[ ])
)
System.out.println("a="+a+"\nb="+b);

class SubClass extends SuperClass
int c;
SubClass(int aa,int bb,int cc)
super(aa,bb);
c=cc;


class SubSubClass extends SubClass
int a;
SubSubClass(int aa,int bb,int cc)
super(aa,bb,cc);
a=aa+bb+cc;

void show()
System.out.println("a="+a+"\nb="+b+"\nc="+c);