import java.util.*;

public class Task181225 {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>(Arrays.asList("a", "b", "c"));
        
        try {
            list.forEach(item -> {
                System.out.print(item + " ");
                if (item.equals("b")) {
                    list.add("d");
                }
            });
        } catch (Exception e) {
            System.out.print("Exception ");
        }
        
        System.out.println(list.size());
    }
}

access-policies:
  - resource: /api/users/**
    methods: [GET, POST]
    required-roles: [USER, ADMIN]
    required-permissions: [users:read]
    conditions:
      - time: "09:00-17:00"
      - day-of-week: [MON-FRI]
  
  - resource: /api/admin/**
    methods: [*]
    required-roles: [ADMIN]
    ip-whitelist: [192.168.1.0/24]

import java.util.*;

public class Task191225 {
    public static void main(String[] args) {
        Deque<String> deque1 = new LinkedList<>();
        Deque<String> deque2 = new ArrayDeque<>();
        
        System.out.println(deque1.getFirst());
        System.out.println(deque2.getFirst());
    }
}