Party

package EX1702;

import java.util.*;
import java.util.stream.Collectors;

public class ClubParty {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int n = Integer.parseInt(s.nextLine());
        String[]list = s.nextLine().split(" ");
        ArrayDeque<String> op = new ArrayDeque<>();
        List<Integer> lists = new ArrayList<>();
        int count = 0;
        for (int i = list.length - 1; i >= 0 ; i--) {
            String element = list[i];
            if (Character.isAlphabetic(element.charAt(0))){
                op.offer(element);
            }else {
                if (op.isEmpty()){
                    continue;
                }
                int number = Integer.parseInt(element);
                count = lists.stream().mapToInt(x-> x).sum();
                if (count + number <= n){
                    lists.add(number);
                }else {
                    System.out.print(op.poll());
                    System.out.print(" -> ");
                    System.out.println(String.join(", ", lists.stream().map(String::valueOf).collect(Collectors.toList())));
                    lists.clear();
                   i++;
                        }
                    }

                }
            }
        }