//문제 2. 다음 프로그램의 출력을 쓰시오.

using System;

namespace Test2
{
    class Queue
    {
        int[] s;
        int front;
        int rear;
        public Queue()
        {
            s = new int[10000];
            front = 0;
            rear = -1;
        }
        public void enqueue(int x) {
            for(int i = 0; i < x; i++) {
                rear++;
                s[rear] = x;
            }
        }
        public void dequeue(int x)
        {
            front++;
        }
        public void print()
        {
            for (int i = front; i <= rear; i++)
            {
                Console.Write(s[i]);
            }
            Console.WriteLine();
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            int[] data = { 1, 2, 3, 4, 5 };
            Queue queue = new Queue();

            queue.enqueue(data[0]);
            queue.enqueue(data[1]);
            queue.enqueue(data[2]);
            queue.dequeue(data[3]);
            queue.dequeue(data[4]);
            queue.print();
        }
    }
}