// program to test classes and scope

class funobj
{
   public static void main(String[] args)
   {   int a;   int b;
       A n = new A();
       B m = new B();
       a = n.f(1);
       b = m.f(100);
       System.out.println(a);
       System.out.println(b);
   }
}

class A
{
   int x = 1;
   int y = 3;

   public int f(int a)
   {
     y = y-a;
     return x+y;
   }
}

class B
{
   int x = 200;
   int y = 300;

   public int f(int a)
   {
     x = x+a;
     return x+y;
   }
}