CubicArtillery

package com.company;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayDeque;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;

public class Problem1 {

    public static void main(String[] args) throws IOException {
        BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));

        int bunkerCapacity = Integer.parseInt(bf.readLine());
        String line;
        LinkedList<String> bunkers = new LinkedList<>();
        LinkedList<Integer> weapons = new LinkedList<Integer>();

        int currentCapacity = 0;
        while (!(line = bf.readLine()).equals("Bunker Revision")) {

            String[] text = line.split("\\s+");
            for (String item : text) {
                if (!Character.isDigit(item.charAt(0))) {
                    bunkers.add(item);
                } else {
                    int weaponCapacity = Integer.parseInt(item);
                    if (weaponCapacity + currentCapacity <= bunkerCapacity) {
                        weapons.add(weaponCapacity);
                        currentCapacity += weaponCapacity;
                        if (currentCapacity == bunkerCapacity) {
                            System.out.printf("%s -> %s\n", bunkers.poll(), weapons.stream()
                                    .map(String::valueOf).collect(Collectors.joining(", ")));
                            currentCapacity = 0;
                            weapons.clear();
                        }
                    } else {
                        {
                            weapons.add(weaponCapacity);
                            if (weaponCapacity <= bunkerCapacity) {
                                currentCapacity -= weapons.poll();
                                while (currentCapacity + weaponCapacity >= bunkerCapacity && weapons.size() > 1) {
                                    if (currentCapacity + weaponCapacity == bunkerCapacity) {
                                        System.out.printf("%s -> %s\n", bunkers.poll(), weapons.stream()
                                                .map(String::valueOf).collect(Collectors.joining(", ")));
                                        weapons.clear();
                                        currentCapacity = 0;
                                        break;
                                    }
                                    currentCapacity -= weapons.poll();
                                }
                            } else {
                                weapons.poll();
                                if (bunkers.size() > 1) {
                                    System.out.printf("%s -> Empty\n", bunkers.poll());
                                }
                            }
                        }
                    }
                }
            }
        }

    }

}