using System;
using System.Collections.Generic;
using System.Text;
 
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter th number ");
            int x= int.Parse(Console.ReadLine());
            RomNo(x);
            Console.ReadLine();
 
        }
        static void RomNo(int n)
        {
            while (n != 0)
            {
                int s = 100;
                int r = n / s;
                n %= s;
                string m, m1, m2;
                switch (s)
                {
                    case 1:
                        m = "I";
                        m1 = "V";
                        m2 = "X";
                        break;
                    case 10:
                        m = "X";
                        m1 = "L";
                        m2 = "C";
                        break;
                    case 100:
                        m = "C";
                        m1 = "D";
                        m2 = "M";
                        break;
                    default:
                        m = "M";
                        break;
                }
                for (int i = 1; i < r; i++)
                {
                    if (s == 1000)
 
                        if (r == 9)
                        {
                            Console.Write(m+m2);
                            break;
                        }
                    if (r == 4)
                    {
                        Console.Write(m+m1);
                        break;
                    }
                    if (r >= 5 && i < 5)
                    {
                        Console.Write(m1);
                        i += 4;
                    }
                    else
                        Console.Write(m);
                }
            }
            return;
        }
    }
}