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

char *veta;
char *slovo;


int main()
{
  char *eoln; 
  long cislo=0;
  long hundred=0,thousand=0,million=0,minus=1;
  veta = (char *) calloc (sizeof(char),200);
  if ( !veta )
    printf("beta err\n");
  slovo = (char *) calloc (sizeof(char),200);
  if ( !slovo )
    printf("slovo err\n");
/*  
  printf("alloc\n");


  
  while ( scanf("%s",veta) != EOF );
  */
  for (;;) {
  fgets(veta,199,stdin);
  hundred = cislo = thousand= million= 0;
  minus= 1;
  
  if ( strlen(veta) < 4 )
    break;
  
  eoln = strrchr(veta,'\n');

  if ( eoln )
  *eoln = '\0';
/*  printf("get \n");*/
/*  printf("-%s-\n",veta);*/
  slovo = strtok(veta," ");
  do
  {
/*    printf("*%s*\n",slovo);*/
 
  if ( strcmp(slovo,"negative") == 0 )
    minus = -1;
  if ( strcmp(slovo,"zero") == 0 )
    cislo = 0;
  if ( strcmp(slovo,"one") == 0 )
    cislo += 1;
  if ( strcmp(slovo,"two") == 0 )
    cislo += 2;
  if ( strcmp(slovo,"three") == 0 )
    cislo+=3;
  if ( strcmp(slovo,"four") == 0 )
    cislo+=4;
  if ( strcmp(slovo,"five") == 0 )
    cislo+=5;
  if ( strcmp(slovo,"six") == 0 )
    cislo+=6;
  if ( strcmp(slovo,"seven") == 0 )
    cislo+=7;
  if ( strcmp(slovo,"eight") == 0 )
    cislo+=8;
  if ( strcmp(slovo,"nine") == 0 )
    cislo+=9;
  if ( strcmp(slovo,"ten") == 0 )
    cislo=10;
  if ( strcmp(slovo,"eleven") == 0 )
    cislo=11;
  if ( strcmp(slovo,"twelve") == 0 )
    cislo=12;
  if ( strcmp(slovo,"thirteen") == 0 )
    cislo=13;
  if ( strcmp(slovo,"fourteen") == 0 )
    cislo=14;
  if ( strcmp(slovo,"fifteen") == 0 )
    cislo=15;
  if ( strcmp(slovo,"sixteen") == 0 )
    cislo=16;
  if ( strcmp(slovo,"seventeen") == 0 )
    cislo=17;
  if ( strcmp(slovo,"eighteen") == 0 )
    cislo=18;
  if ( strcmp(slovo,"nineteen") == 0 )
    cislo=19;
  if ( strcmp(slovo,"twenty") == 0 )
    cislo=20;
  if ( strcmp(slovo,"thirty") == 0 )
    cislo=30;
  if ( strcmp(slovo,"forty") == 0 )
    cislo=40;
  if ( strcmp(slovo,"fifty") == 0 )
    cislo=50;
  if ( strcmp(slovo,"sixty") == 0 )
    cislo=60;
  if ( strcmp(slovo,"seventy") == 0 )
    cislo=70;
  if ( strcmp(slovo,"eighty") == 0 )
    cislo=80;
  if ( strcmp(slovo,"ninety") == 0 )
    cislo=90;
  if ( strcmp(slovo,"hundred") == 0 ) {
    hundred=cislo*100;
    cislo = 0;
    }
  if ( strcmp(slovo,"thousand") == 0 ) {
    thousand=(hundred+cislo)*1000;
    hundred = 0;
    cislo = 0;
    }
  if ( strcmp(slovo,"million") == 0 ) {
    million=(hundred +cislo)*1000000L;
    thousand = hundred= 0;
    cislo = 0;
    }
/*printf("%ld\n", cislo);*/
  }
  while ( (slovo = strtok(NULL," ")) != NULL );
  
  printf("%ld\n",(cislo+hundred+thousand+million)*minus);
  
  strcpy(veta,"");
  }
  
  free(slovo);
  free(veta);
  return 0;
}