#include <stdio.h>
#include <stdlib.h>

int
main (void)
{
  for (;;)
    {
      unsigned long long val;
      char buf[10240], *p;

      if (gets (buf) == NULL)
	break;
      if (*buf == 0)
	break;
      val = 0;
      for (p = buf; *p != 0; p++)
	{
	  switch (*p)
	    {
	    case 'm':
	      val = val + 1000 - (val % 1000);
	      break;

	    case 'd':
	      val = val + 500 - (val % 500);
	      break;

	    case 'c':
	      val = val + 100 - (val % 100);
	      break;

	    case 'l':
	      val = val + 50 - (val % 50);
	      break;

	    case 'x':
	      val = val + 10 - (val % 10);
	      break;

	    case 'v':
	      val = val + 5 - (val % 5);
	      break;

	    case 'i':
	      val++;
	      break;

	    default:
	      break;
	    }
	}
      printf ("%llu\n", val);
    }
  return EXIT_SUCCESS;
}