#include <stdio.h>

int main()
{
  char buffer[16000];
  
  while(gets(buffer))
  {
    int x1000=0, x500=0, x100=0, x50=0, x10=0, x5=0, x1=0;
    int c1000=0, c500=0, c100=0, c50=0, c10=0, c5=0, c1=0;
    
    int x900=-1, x400=-1, x90=-1, x40=-1, x9=-1, x4=-1;
    
    char *c=&buffer[0];
    
    while(*c)
    {
      if(*c=='m')
      {
        x1000+=1000;
        c1000++;
        
        if(x1000>=x500)
        {
          x500=x1000;
          c500=0;
        }
        
        if(x1000>=x100)
        {
          x100=x1000;
          c100=0;
        }
        
        if(x1000>=x50)
        {
          x50=x1000;
          c50=0;
        }
        
        if(x1000>=x10)
        {
          x10=x1000;
          c10=0;
        }
        
        if(x1000>=x5)
        {
          x5=x1000;
          c5=0;
        }
        
        if(x1000>=x1)
        {
          x1=x1000;
          c1=0;
        }
        
        if(x900>=0 && x900+900>x100)
        {
          x100=x900+900;
          c100=3;
          
          if(x100>=x50) { x50=x100; c50=0; }
          if(x100>=x10) { x10=x100; c10=0; }
          if(x100>=x5) { x5=x100; c5=0; }
          if(x100>=x1) { x1=x100; c1=0; }
        }
      }
      
      if(*c=='d')
      {
        if(c500==0)
        {
          x500+=500;
          c500=1;

          if(x500>=x100)
          {
            x100=x500;
            c100=0;
          }
          
          if(x500>=x50)
          {
            x50=x500;
            c50=0;
          }
          
          if(x500>=x10)
          {
            x10=x500;
            c10=0;
          }
          
          if(x500>=x5)
          {
            x5=x500;
            c5=0;
          }
          
          if(x500>=x1)
          {
            x1=x500;
            c1=0;
          }
        }
        
        if(x400>=0 && x400+400>x100)
        {
          x100=x400+400;
          c100=3;

          if(x100>=x50) { x50=x100; c50=0; }
          if(x100>=x10) { x10=x100; c10=0; }
          if(x100>=x5) { x5=x100; c5=0; }
          if(x100>=x1) { x1=x100; c1=0; }
        }
      }
      

      if(*c=='c')
      {
        if(x1000>x400)
          x400=x1000;
        if(x1000>x900)
          x900=x1000;
        
        if(c100<3)
        {
          x100+=100;
          c100++;
          
          if(x100>=x50)
          {
            x50=x100;
            c50=0;
          }
          
          if(x100>=x10)
          {
            x10=x100;
            c10=0;
          }
          
          if(x100>=x5)
          {
            x5=x100;
            c5=0;
          }
          
          if(x100>=x1)
          {
            x1=x100;
            c1=0;
          }
        }
        
        if(x90>=0 && x90+90>x10)
        {
          x10=x90+90;
          c10=3;

          if(x10>=x5) { x5=x10; c5=0; }
          if(x10>=x1) { x1=x10; c1=0; }
        }
      }
      
      if(*c=='l')
      {
        if(c50==0)
        {
          x50+=50;
          c50=1;

          if(x50>=x10)
          {
            x10=x50;
            c10=0;
          }
          
          if(x50>=x5)
          {
            x5=x50;
            c5=0;
          }
          
          if(x50>=x1)
          {
            x1=x50;
            c1=0;
          }
        }
        
        if(x40>=0 && x40+40>x10)
        {
          x10=x40+40;
          c10=3;

          if(x10>=x5) { x5=x10; c5=0; }
          if(x10>=x1) { x1=x10; c1=0; }
        }
      }


      if(*c=='x')
      {
        if(x100>x40)
          x40=x100;
        if(x100>x90)
          x90=x100;
        
        if(c10<3)
        {
          x10+=10;
          c10++;
          
          if(x10>=x5)
          {
            x5=x10;
            c5=0;
          }
          
          if(x10>=x1)
          {
            x1=x10;
            c1=0;
          }
        }
        
        if(x9>=0 && x9+9>x1)
        {
          x1=x9+9;
          c1=3;
        }
      }
      
      if(*c=='v')
      {
        if(c5==0)
        {
          x5+=5;
          c5=1;

          if(x5>=x1)
          {
            x1=x5;
            c1=0;
          }
        }
        
        if(x4>=0 && x4+4>x1)
        {
          x1=x4+4;
          c1=3;
        }
      }


      if(*c=='i')
      {
        if(x10>x4)
          x4=x10;
        if(x10>x9)
          x9=x10;
        
        if(c1<3)
        {
          x1+=1;
          c1++;
        }
      }
      
      c++;
    }
    
    printf("%d\n", x1);
  }
  
  return 0;
}