#include <stdio.h>

int readword(char **c)
{
  char *d=*c;

  while((**c) && (**c)!=' ')
  {
    (*c)++;
  }
  
  if(**c)
  {
    (**c)=0;
    (*c)++;
  }
   else
    *c=0;
  
  if(!strcmp(d, "negative"))
    return -1;
  if(!strcmp(d, "zero"))
    return 0;
  if(!strcmp(d, "one"))
    return 1;
  if(!strcmp(d, "two"))
    return 2;
  if(!strcmp(d, "three"))
    return 3;
  if(!strcmp(d, "four"))
    return 4;
  if(!strcmp(d, "five"))
    return 5;
  if(!strcmp(d, "six"))
    return 6;
  if(!strcmp(d, "seven"))
    return 7;
  if(!strcmp(d, "eight"))
    return 8;
  if(!strcmp(d, "nine"))
    return 9;
  if(!strcmp(d, "ten"))
    return 10;
  if(!strcmp(d, "eleven"))
    return 11;
  if(!strcmp(d, "twelve"))
    return 12;
  if(!strcmp(d, "thirteen"))
    return 13;
  if(!strcmp(d, "fourteen"))
    return 14;
  if(!strcmp(d, "fifteen"))
    return 15;
  if(!strcmp(d, "sixteen"))
    return 16;
  if(!strcmp(d, "seventeen"))
    return 17;
  if(!strcmp(d, "eighteen"))
    return 18;
  if(!strcmp(d, "nineteen"))
    return 19;
  if(!strcmp(d, "twenty"))
    return 20;
  if(!strcmp(d, "thirty"))
    return 30;
  if(!strcmp(d, "forty"))
    return 40;
  if(!strcmp(d, "fifty"))
    return 50;
  if(!strcmp(d, "sixty"))
    return 60;
  if(!strcmp(d, "seventy"))
    return 70;
  if(!strcmp(d, "eighty"))
    return 80;
  if(!strcmp(d, "ninety"))
    return 90;
  if(!strcmp(d, "hundred"))
    return 100;
  if(!strcmp(d, "thousand"))
    return 1000;
  if(!strcmp(d, "million"))
    return 1000000;
  
  while(1);
}

int main()
{
  char str[8192];
  int negative;
  int s1, s1000, s1000000, now, tmp;
  char *c;
  
  while(gets(str))
  {
    if(!*str)
      break;
  
    c=str;
    
    negative=1;
    now=0;
    s1=0;
    s1000=0;
    s1000000=0;
    
    while(c)
    {
      tmp=readword(&c);
      
      if(tmp==-1)
        negative=-1;
       else
      if(tmp==1000)
      {
        s1000=now;
        now=0;
      }
       else
      if(tmp==1000000)
      {
        s1000000=now;
        now=0;
      }
       else
      if(tmp==100)
        now=now*100;
       else
        now=now+tmp;
    }
    
    s1=now;
    
    printf("%d\n", negative*(1000000*s1000000+1000*s1000+s1));
  }
  
  return 0;
}