Someone please help me, what's wrong with this code ?

import java.util.*;
public class Main {
    public static void main(String[] args){
        try {
            Scanner scanner = new Scanner(System.in);
            int multiset = scanner.nextInt();
            int query = scanner.nextInt();
            long[] queryElements = new long[query];
            PriorityQueue<Long> priorityQueue = new PriorityQueue<>(Collections.reverseOrder());
            for (int i = 0; i < multiset; i++) {
                priorityQueue.add(scanner.nextLong());
            }
            for (int i = 0; i < query; i++) {
                queryElements[i] = scanner.nextInt();
            }
            HashMap<Long, Long> mapx = new HashMap<>();
            long k = 1;
            while (!priorityQueue.isEmpty()) {
                long x = priorityQueue.poll();
                mapx.put(k, x);
                k++;
                x = x / 2;