Santa PR.F belejki

package com.company;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class Main {

    public static void main(String[] args)  {
        Scanner scanner = new Scanner(System.in);

        String[] boxes = scanner.nextLine().split(" ");
        String[] magic = scanner.nextLine().split(" ");


        ArrayDeque<Integer> boxesValues = new ArrayDeque<>();
        ArrayDeque<Integer> magicValues = new ArrayDeque<>();

        for (String box : boxes) {
            boxesValues.push(Integer.parseInt(box));
        }

        for (String value : magic) {
            magicValues.offer(Integer.parseInt(value));
        }

        int dollCounter = 0;
        int woodenTrainCounter = 0;
        int teddyBearCounter = 0;
        int bicycleCounter = 0;


        while (!boxesValues.isEmpty() && !magicValues.isEmpty()) {
            //napravi si promenlivi, za d (b,m ) a izbegnesh nullPointerExeption
            int b = boxesValues.peek();
            int m = magicValues.peek();

            int sum = boxesValues.peek() * magicValues.peek();

            //tuk e dobre da pochnesh da proverqvash s negativnite rezultati parvo
            if (sum < 0) {
                sum = boxesValues.peek() + magicValues.peek();
                remove(boxesValues, magicValues);
                boxesValues.push(sum);

            }
            else if (m == 0 || b == 0){
                //tuk trqbva da e dva pati if, an ne if / else if, zashtoto inache ako i dvete sa nula, samo ednoto shte se mahne
                if(m  == 0){
                    // ne s remove()
                    magicValues.poll();
                }
                if(b == 0){
                    boxesValues.pop();
                }
            }

          else  if (sum == 150) {
                dollCounter++;
                remove(boxesValues, magicValues);
            } else if (sum == 250) {
                woodenTrainCounter++;
                remove(boxesValues, magicValues);
            } else if (sum == 300) {
                teddyBearCounter++;
                remove(boxesValues, magicValues);
            } else if (sum == 400) {
                bicycleCounter++;
                remove(boxesValues, magicValues);
            }

            else {
                magicValues.poll();
                int newMaterial= b + 15;
                boxesValues.pop();
                boxesValues.push(newMaterial);
            }
        }



            // parvo printirash saobshtenieto
            if(dollCounter > 0 && woodenTrainCounter > 0 || bicycleCounter > 0 && teddyBearCounter > 0){
                System.out.println("The presents are crafted! Merry Christmas!");

            }

            else {
            System.out.println("No presents this Christmas!");
            }

        //proverqvash purvo  dali sa prazni ili ne i printirash ako ne sa
        if (boxesValues.size() > 0 ) {
            System.out.print("Materials left: ");
            for (int i = 0; i < boxesValues.size(); i++) {
                if (i == boxesValues.size() - 1) {
                    System.out.print(boxesValues.pop());
                } else {
                    System.out.print(String.format("%d, ", boxesValues.pop()));
                    i--;
                }
            }
        }
        if (magicValues.size() > 0 ) {
            System.out.print("Materials left: ");
            for (int i = 0; i < boxesValues.size(); i++) {
                if (i == boxesValues.size() - 1) {
                    System.out.print(boxesValues.poll());
                } else {
                    System.out.print(String.format("%d, ", magicValues.poll()));
                    i--;
                }
            }
        }
            System.out.println();


        //tova printirane go pravish s TreeMap, zashtoto igrachkite trqbvA da se sortirat po azbuchen red
            print(dollCounter, woodenTrainCounter, teddyBearCounter, bicycleCounter);


    }

    private static void print(int dollCounter, int woodenTrainCounter, int teddyBearCounter, int bicycleCounter) {
        if(dollCounter > 0){
            System.out.println(String.format("Doll: %d", dollCounter));
        }
        if(woodenTrainCounter > 0){
            System.out.println(String.format("Wooden train: %d", woodenTrainCounter));
        }
        if(teddyBearCounter > 0){
            System.out.println(String.format("Teddy bear: %d", teddyBearCounter));
        }
        if(bicycleCounter > 0){
            System.out.println(String.format("Bicycle: %d", bicycleCounter));
        }
    }


    private static void remove(ArrayDeque<Integer> boxes, ArrayDeque<Integer> magics) {
        boxes.pop();
        magics.poll();

    }
}