#include <cstdio>
//#include <cstring>
#include <iostream>
#include <string>

using namespace std;

int m, d, c, l, x, v, i;

//char s[10001];
string s;

int main()
{
  int sl;
//  while (gets(s) && (sl = strlen(s)) > 0)
  while (getline(cin, s) && (sl = s.length()) > 0)
  {
    m = d = c = l = x = v = i = 0;

    int j;
    for (j=0; j<sl; j++)
    {
      char k = s[j];
      if (k == 'm') { m++; d = c = l = x = v = i = 0; }
      if (k == 'd' && d == 0) { d++; c = l = x = v = i = 0; }
      if (k == 'c' && c < 3)  { c++; l = x = v = i = 0; } 
      if (k == 'l' && l == 0) { l++; x = v = i = 0; }
      if (k == 'x' && x < 3)  { x++; v = i = 0; }
      if (k == 'v' && v == 0) { v++; i = 0; }
      if (k == 'i' && i < 3)  { i++; }
      
    }
    printf ("%d\n", m*1000 + d*500 + c*100 + l*50 + x*10 + v*5 + i);
  }  
  return 0;
}