#include <stdio.h>
#include <ctype.h>
#define MAX_LEN 250

char elem[MAX_LEN];

int N;
int TMP;
int neg;

int next_elem(void) {
  int c,i=0;
  while (c=tolower(getchar()),c==' ') {}
  if (c=='\n' || c==EOF) return 0;
  elem[i++]=c;
  while (c=tolower(getchar()),c!=' ' && c!='\n' && c!=EOF) elem[i++]=c;
  ungetc(c,stdin);
  elem[i++]='\0';
  return 1;
}

struct num {
  char t[50];
  int n;
};

#define NEG -1
#define HUNDRED -2
#define THOUSAND -3
#define MILLION -4

struct num ns[]={
  {"negative",-1},
  {"hundred",-2},
  {"thousand",-3},
  {"million",-4},
  {"zero",0},
  {"one",1},
  {"two",2},
  {"three",3},
  {"four",4},
  {"five",5},
  {"six",6},
  {"seven",7},
  {"eight",8},
  {"nine",9},
  {"ten",10},
  {"eleven",11},
  {"twelve",12},
  {"thirteen",13},
  {"fourteen",14},
  {"fifteen",15},
  {"sixteen",16},
  {"seventeen",17},
  {"eighteen",18},
  {"nineteen",19},
  {"twenty",20},
  {"thirty",30},
  {"forty",40},
  {"fifty",50},
  {"sixty",60},
  {"seventy",70},
  {"eighty",80},
  {"ninety",90}
};

void zpracuj() {
  int i;
  int hodnota;

  for (i=0;i<sizeof(ns)/sizeof(struct num);i++) {
    if (!strcmp(elem,ns[i].t)) {
      hodnota=ns[i].n;
    }
  }

  if (hodnota<0) {/*spec*/
    if (hodnota==NEG) neg=1;
    if (hodnota==HUNDRED) TMP*=100;
    if (hodnota==THOUSAND) {
      N+=TMP*1000;
      TMP=0;
    }
    if (hodnota==MILLION) {
      N+=TMP*1000000;
      TMP=0;
    }
  } else { /*normal num*/
    TMP+=hodnota;
  }
}

int main(void) {
  while (next_elem()) {
    N=TMP=neg=0;
    do {
      zpracuj();
    } while (next_elem());
    N+=TMP;
    printf("%s%d\n",(neg)?"-":"",N);
  }
  
  return 0;
}