Little Alchemy

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayDeque;
import java.util.Stack;

public class P01_LittleAlchemy {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        ArrayDeque<Integer> stones = new ArrayDeque<>();
        Stack<Integer> storage = new Stack<>();
        String[] inputLine = reader.readLine().split("\\s+");

        for (String stone : inputLine) {
            stones.add(Integer.parseInt(stone));
        }

        while (true) {
            String input = reader.readLine();
            if ("Revision".equals(input)) {
                break;
            }
            String[] tokens = input.split("\\s+");
            String command = tokens[0] + " " + tokens[1];
            int doses = Integer.parseInt(tokens[2]);
            if ("Apply acid".equals(command) && !stones.isEmpty()) {
                for (int i = 0; i < doses; i++) {
                    int currentStone = stones.remove();
                    currentStone--;
                    if (currentStone == 0) {
                        storage.push(currentStone);
                    } else {
                        stones.add(currentStone);
                    }
                    if (stones.isEmpty()) {
                        break;
                    }
                }
            } else if ("Air leak".equals(command) && !storage.isEmpty()) {
                int gold = storage.pop();
                gold += doses;
                stones.add(gold);
            }
        }

        if (!stones.isEmpty()) {
            for (Integer stone : stones) {
                System.out.print(stone + " ");
            }
        }
        System.out.println(System.lineSeparator() + storage.size());
    }
}