import java.io.*;

    public class Q4
   {
       public static void main (String [] args) throws IOException
      {
         BufferedReader in = new BufferedReader (new FileReader ("DATA4.txt"));
         BufferedWriter out = new BufferedWriter (new FileWriter ("OUT4.txt"));  
      	
         for (int ZZ = 0; ZZ < 5; ZZ++)
         {
            String R = in.readLine ();
            int C;
            int [] N = new int [R.length ()];
            int t = 0;
         
            for (int x = 0; x < N.length; x++)
            {
            
               switch (R.charAt (x))
               {
                  case 'I':
                     t = 1;
                     break;
                  case 'V':
                     t = 5;
                     break;
                  case 'X':
                     t = 10;
                     break;
                  case 'L':
                     t = 50;
                     break;
                  case 'C':
                     t = 100;
                     break;
                  case 'D':
                     t = 500;
                     break;
                  case 'M':
                     t = 1000;
                     break;
               }//end switch
            
               N [x] = t;
            }
         
            C = 0;
            if (N.length == 0)
            {
               System.out.println (N [0]);
            }  
            else
            {
               for (int x = 0; x < N.length - 1; x++)
               {
                  if (N [x] < N [x + 1])
                  {
                     C -= N [x];
                  }
                  else
                  {
                     C += N [x];
                  }
               }
               C += N [N.length - 1];
               out.write ("" + C);
               out.newLine ();
            }
         }
         out.close ();
      
      }
   }