/* 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 Ideone
{
    public static void main(String[] args) {
        B.Y.Q.main();
    }
}

class A<T> {
    static class X {
        static class Q {
            public static void main() {
                System.out.println("A<T>.X.Q");
            }
        }
    }
}


class B extends A<B.Y.Q> {
    static class Y extends A.X {
    } // X here is inherited from A
}

class X {
    static class Q {
        public static void main() {
            System.out.println("X.Q");
        }
    }
}