/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
class A {
   protected void f() {
        System.out.println("from A");
   } 
} 
 
class B extends A {
      protected void f() {
        System.out.println("from B");
     } 
} 
 
class C extends B {
      public void f() {
         System.out.println("from C");
     } 
} 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
         A obj = new C();
         obj.f();
	}
}

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