7-2 队列应用(蓝桥杯)

import java.util.LinkedList;

import java.util.Queue;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        Queue<String> vip = new LinkedList<>();

        Queue<String> putong = new LinkedList<>();

        int m = sc.nextInt();

        sc.nextLine();

        while(m-->0){

            String s = sc.nextLine();

            String[] str = s.split(" ");

            if(str[0].contains("IN")){

                if(str[2].contains("N")){

                    putong.offer(str[1]);

                }else{

                    vip.offer(str[1]);

                }

            }else{

                if(str[1].contains("N")){

                    putong.poll();

                }else{

                    vip.poll();

                }

            }

        }

        for(String s : vip){

            System.out.println(s);

        }

        for(String s : putong){

            System.out.println(s);

        }

    }

}