package priority;

import java.util.*;

public class Priority {

    public static void main(String[] args) {

        PriorityQueue<Integer> line = new PriorityQueue<>();

        Scanner input = new Scanner(System.in);

        System.out.print("how many people are in the line?: ");
        int people = input.nextInt();
        for (int i=0; i < people; i++) {

        System.out.print("What is their ticket number?: ");
        int lines = input.nextInt();
        line.add(lines);

        while (!line.isEmpty())
        System.out.print(line.remove() + " ");
        }
    }
}