#include <stdio.h>

int main() {
   char s[10001];
   int i;
   while (scanf(" %[^\n]",s) == 1) {
      int MaxM,MaxD,MaxC,MaxCC,MaxCCC,MaxL,MaxX,MaxXX,MaxXXX,MaxV,MaxI,MaxII,MaxIII;
      MaxM=MaxD=MaxC=MaxCC=MaxCCC=MaxL=MaxX=MaxXX=MaxXXX=MaxV=MaxI=MaxII=MaxIII=0;
      int i;
      int Ev;
      for (i=0;s[i]!=0;i++) switch (s[i]) {
      case 'm':
         MaxM = MaxM + 1000;
	 break;
      case 'd':
         MaxD = MaxM + 500;
	 break;
      case 'c':
         MaxCCC = MaxCC + 100;
	 MaxCC = MaxC + 100;
	 MaxC = ((MaxM > MaxD) ? MaxM : MaxD) + 100;
	 break;
      case 'l':
         Ev = MaxM;
	 if (MaxD > Ev) Ev = MaxD;
	 if (MaxC > Ev) Ev = MaxC;
	 if (MaxCC > Ev) Ev = MaxCC;
	 if (MaxCCC > Ev) Ev = MaxCCC;
	 MaxL = Ev + 50;
	 break;
      case 'x':
         MaxXXX = MaxXX+10;
	 MaxXX  = MaxX + 10;
         Ev = MaxM;
	 if (MaxD > Ev) Ev = MaxD;
	 if (MaxC > Ev) Ev = MaxC;
	 if (MaxCC > Ev) Ev = MaxCC;
	 if (MaxCCC > Ev) Ev = MaxCCC;
	 if (MaxL > Ev) Ev = MaxL;
	 MaxX = Ev+10;
	 break;
      case 'v':
         Ev = MaxM;
	 if (MaxD > Ev) Ev = MaxD;
	 if (MaxC > Ev) Ev = MaxC;
	 if (MaxCC > Ev) Ev = MaxCC;
	 if (MaxCCC > Ev) Ev = MaxCCC;
	 if (MaxL > Ev) Ev = MaxL;
	 if (MaxX > Ev) Ev = MaxX;
	 if (MaxXX > Ev) Ev = MaxXX;
	 if (MaxXXX > Ev) Ev = MaxXXX;
	 MaxV = Ev + 5;
	 break;
      case 'i': 
         MaxIII = MaxII  + 1;
	 MaxII = MaxI + 1;
         Ev = MaxM;
	 if (MaxD > Ev) Ev = MaxD;
	 if (MaxC > Ev) Ev = MaxC;
	 if (MaxCC > Ev) Ev = MaxCC;
	 if (MaxCCC > Ev) Ev = MaxCCC;
	 if (MaxL > Ev) Ev = MaxL;
	 if (MaxX > Ev) Ev = MaxX;
	 if (MaxXX > Ev) Ev = MaxXX;
	 if (MaxXXX > Ev) Ev = MaxXXX;
	 if (MaxV > Ev) Ev = MaxV;
	 MaxI = Ev  + 1;
      };
         Ev = MaxM;
	 if (MaxD > Ev) Ev = MaxD;
	 if (MaxC > Ev) Ev = MaxC;
	 if (MaxCC > Ev) Ev = MaxCC;
	 if (MaxCCC > Ev) Ev = MaxCCC;
	 if (MaxL > Ev) Ev = MaxL;
	 if (MaxX > Ev) Ev = MaxX;
	 if (MaxXX > Ev) Ev = MaxXX;
	 if (MaxXXX > Ev) Ev = MaxXXX;
	 if (MaxV > Ev) Ev = MaxV;
	 if (MaxI > Ev) Ev = MaxI;
	 if (MaxII > Ev) Ev = MaxII;
	 if (MaxIII>Ev) Ev = MaxIII;
   printf("%d\n",Ev);
   };
/*   printf("%d%s",i,s);*/
   return 0;
};