#include <iostream>  
using namespace std; 
 
class A { 
public: 
   int a; 
   int getB() { 
       return B::b; 
   } 
   class B { 
       public: 
           B() { 
               b = 1; 
           } 
           int b; 
   }; 
}; 
 
int main()  
{ 
   A a; 
   cout << a.getB(); 
   return 0; 
}