import java.io.*;
import java.util.StringTokenizer;

public class eksam4{
   public static void main(String argumendid[])
  throws IOException{
    BufferedReader sisse=new BufferedReader(
      new InputStreamReader(System.in)
    );
    System.out.println("Palun number:");
    String nr=sisse.readLine();
	
	String y[]={"I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"};//yhelised
	String k[]={"X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"};//kymnelised
	String s[]={"C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"};//sajalised
	String t[]={"M", "MM"};//tuhanded
		
   	if(nr.length()==4){
  	   if(nr.substring(0,1).equals("1")){System.out.print(t[0]);}
   	   if(nr.substring(0,1).equals("2")){System.out.print(t[1]);}
   	   
	   if(nr.substring(1,2).equals("1")){System.out.print(s[0]);}
	   if(nr.substring(1,2).equals("2")){System.out.print(s[1]);}
	   if(nr.substring(1,2).equals("3")){System.out.print(s[2]);}
	   if(nr.substring(1,2).equals("4")){System.out.print(s[3]);}
	   if(nr.substring(1,2).equals("5")){System.out.print(s[4]);}
	   if(nr.substring(1,2).equals("6")){System.out.print(s[5]);}
	   if(nr.substring(1,2).equals("7")){System.out.print(s[6]);}
	   if(nr.substring(1,2).equals("8")){System.out.print(s[7]);}
	   if(nr.substring(1,2).equals("9")){System.out.print(s[8]);}
	   
	   if(nr.substring(2,3).equals("1")){System.out.print(k[0]);}
	   if(nr.substring(2,3).equals("2")){System.out.print(k[1]);}
	   if(nr.substring(2,3).equals("3")){System.out.print(k[2]);}
	   if(nr.substring(2,3).equals("4")){System.out.print(k[3]);}
	   if(nr.substring(2,3).equals("5")){System.out.print(k[4]);}
	   if(nr.substring(2,3).equals("6")){System.out.print(k[5]);}
	   if(nr.substring(2,3).equals("7")){System.out.print(k[6]);}
	   if(nr.substring(2,3).equals("8")){System.out.print(k[7]);}
	   if(nr.substring(2,3).equals("9")){System.out.print(k[8]);}
	   
	   if(nr.substring(3,4).equals("1")){System.out.print(y[0]);}
       if(nr.substring(3,4).equals("2")){System.out.print(y[1]);}
   	   if(nr.substring(3,4).equals("3")){System.out.print(y[2]);}
   	   if(nr.substring(3,4).equals("4")){System.out.print(y[3]);}
   	   if(nr.substring(3,4).equals("5")){System.out.print(y[4]);}
   	   if(nr.substring(3,4).equals("6")){System.out.print(y[5]);}
   	   if(nr.substring(3,4).equals("7")){System.out.print(y[6]);}
   	   if(nr.substring(3,4).equals("8")){System.out.print(y[7]);}
   	   if(nr.substring(3,4).equals("9")){System.out.print(y[8]);}
	}

    }
}