public class Task300725 {
    public static void main(String[] args) {
        Object lock = new Object();
        
        synchronized (lock) {
            try {
                lock.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        
        System.out.println("Done");
    }
}

import java.util.concurrent.*;

public class Task310725 {
    public static void main(String[] args) throws Exception {
        Callable<String> task = () -> "Result";
        FutureTask<String> future = new FutureTask<>(task);
        
        new Thread(future).start();
        System.out.println(future.get());
    }
}

import java.util.concurrent.CountDownLatch;

public class Task010825 {
    public static void main(String[] args) throws InterruptedException {
        CountDownLatch latch = new CountDownLatch(1);
        
        new Thread(() -> {
            latch.countDown();
            latch.countDown();
        }).start();

        latch.await();
        System.out.println("Completed");
    }
}

import java.util.BitSet;

public class Task040825 {
    public static void main(String[] args) {
        BitSet bs1 = new BitSet();
        bs1.set(65);
        
        BitSet bs2 = new BitSet();
        bs2.set(64);
        
        bs1.and(bs2);
        System.out.println(bs1.cardinality());
    }
}

public class Task050825 {
    public static void main(String[] args) {
        int x = 5;
        
        if (x > 10)
            if (x < 20)
                System.out.println("A");
            else
                System.out.println("B");
        else if (x > 2)
            if (x < 8)
                System.out.println("C");
            else
                System.out.println("D");
        else
            System.out.println("E");
    }
}

public class Task060825 {
    public static void main(String[] args) {
        int x = 1;
        int y = 2;
        
        if (++x > y++ ? x++ < --y : y-- > ++x) {
            System.out.println("A: x=" + x + " y=" + y);
        } else {
            System.out.println("B: x=" + x + " y=" + y);
        }
    }
}