/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
 class A { 
 
       public A() { 
           System.out.print("A"); 
       } 
 
   } 
 
   class B extends A { 
 
      public B() { 
         System.out.print("B"); 
      } 
 
      public static void main(String[] args) { 
          B b = new B(); 
      } 
 
  }

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