#include <stdio.h>
#include <string.h>

int main(void) {
  int x;
  char *pole[100];
  int i = 0;
  int mod = 1;
  char *aux;
  int pom = 0;
  char s[1000], slovo[30];

  
  for(i = 0; i < 100; i++)
    pole[i] = "";

  pole[1] = "one";
  pole[2] = "two";
  pole[3] = "three";
  pole[4] = "four";
  pole[5] = "five";
  pole[6] = "six";
  pole[7] = "seven";
  pole[8] = "eight";
  pole[9] = "nine";
  pole[10] = "ten";
  pole[11] = "eleven";
  pole[12] = "twelve";
  pole[13] = "thirteen";
  pole[14] = "fourteen";
  pole[15] = "fifteen";
  pole[16] = "sixteen";
  pole[17] = "seventeen";
  pole[18] = "eighteen";
  pole[19] = "nineteen";
  pole[20] = "twenty";
  pole[30] = "thirty";
  pole[40] = "forty";
  pole[50] = "fifty";
  pole[60] = "sixty";
  pole[70] = "seventy";
  pole[80] = "eighty";
  pole[90] = "ninety";

  while(1) {
    int in;
    mod = 1;
    pom = x = 0;
    i = 0;
    
    in = getchar(); 
    while (in != '\n' && in != EOF) {
      s[i++] = in; 
      in = getchar(); 
    }
    if (in == EOF) return 0;
    s[i] = '\0';
    aux = s;
    if (strcmp(aux,"") == 0)
      exit(0);
    x = 0; 
/*   while ((slovo = najdi(&s)) != NULL) {*/
    while(1) {     
      while((*aux == ' ') && (*aux != 0))
        aux++;

      if(*aux == 0)
        break;
      i = 0;
      while(*aux != ' ' && *aux != 0) {
        slovo[i++] = *aux;
        aux++;
      }
      slovo[i] = 0;
      

      if(strcmp(slovo, "negative") == 0)
        mod = -1;
      else
        if(strcmp(slovo, "hundred") == 0) {
	  x *= 100;
	}  
      else
        if(strcmp(slovo, "thousand") == 0) {
	  x *= 1000;
	  pom += x;
	  x = 0;
	}
      else
        if(strcmp(slovo, "million") == 0) {
	  x *= 1000000;
	  pom = x;
	  x = 0;
	}
      else {
        i = 0;
	while(i < 100 && (strcmp(pole[i], slovo) != 0))
	  i++;
	if (i != 100)
	  x += i;
      }
    }
    pom += x;
    printf("%d\n", pom*mod);      
  }
    
  return 0;
}