SoftUni Programming Fundamentals #577#0

namespace BlankProject
{
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Globalization;
    class Program
    {
        static void Main()
        {
            List<string> numbers = new List<string>();

            for (int i = 0; i < 4; i++)
            {
                int number = int.Parse(Console.ReadLine());


                numbers.Add($"{number:d4}");

            }

            var result = string.Join(" ", numbers);
            Console.WriteLine(result);
        }
    }
}