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

int main(void)
{
    int i,j,k,zapor,stovka;
    char text[5000];
    char slovo[20];
    int vysl,pom;
    int slova[500];
    
    while( gets(text) )
    {	
	i = j = 0;
	while (1) {
	
	k = 0;
    	while (text[i] != '\0' && text[i] != ' ')
	    slovo[k++] = text[i++];	    
	slovo[k] = '\0';
	
	if (! strcmp(slovo,"negative") ) slova[j] = -1;
	if (! strcmp(slovo,"zero") ) slova[j] = 0;
	if (! strcmp(slovo,"one") ) slova[j] = 1;
	if (! strcmp(slovo,"two") ) slova[j] = 2;
	if (! strcmp(slovo,"three") ) slova[j] = 3;
	if (! strcmp(slovo,"four") ) slova[j] = 4;
	if (! strcmp(slovo,"five") ) slova[j] = 5;
	if (! strcmp(slovo,"six") ) slova[j] = 6;
	if (! strcmp(slovo,"seven") ) slova[j] = 7;
	if (! strcmp(slovo,"eight") ) slova[j] = 8;
	if (! strcmp(slovo,"nine") ) slova[j] = 9;
	if (! strcmp(slovo,"ten") ) slova[j] = 10;
	if (! strcmp(slovo,"eleven") ) slova[j] = 11;
	if (! strcmp(slovo,"twelve") ) slova[j] = 12;
	if (! strcmp(slovo,"thirteen") ) slova[j] = 13;
	if (! strcmp(slovo,"fourteen") ) slova[j] = 14;
	if (! strcmp(slovo,"fifteen") ) slova[j] = 15;
	if (! strcmp(slovo,"sixteen") ) slova[j] = 16;
	if (! strcmp(slovo,"seventeen") ) slova[j] = 17;
	if (! strcmp(slovo,"eighteen") ) slova[j] = 18;
	if (! strcmp(slovo,"nineteen") ) slova[j] = 19;
	if (! strcmp(slovo,"twenty") ) slova[j] = 20;
	if (! strcmp(slovo,"thirty") ) slova[j] = 30;
	if (! strcmp(slovo,"forty") ) slova[j] = 40;
	if (! strcmp(slovo,"fifty") ) slova[j] = 50;
	if (! strcmp(slovo,"sixty") ) slova[j] = 60;
	if (! strcmp(slovo,"seventy") ) slova[j] = 70;
	if (! strcmp(slovo,"eighty") ) slova[j] = 80;
	if (! strcmp(slovo,"ninety") ) slova[j] = 90;
	if (! strcmp(slovo,"hundred") ) slova[j] = 100;
	if (! strcmp(slovo,"thousand") ) slova[j] = 1000;
	if (! strcmp(slovo,"million") ) slova[j] = 1000000;
	j++;
	if (text[i] == '\0') break;
	i++;
	}
	zapor = 1;
	stovka = pom = vysl = 0;

	for (i=0;i<j;i++) {
	    if (slova[i] >= 0 && slova[i] < 100)
		vysl = vysl + slova[i];
	    else
	    if (slova[i] != -1)
	    {	
		if (slova[i] == 100) {
		    pom = pom + vysl * slova[i];
		    stovka = pom;
		    vysl = 0;
		}else {
		    pom = pom + (stovka + vysl) * slova[i] - stovka;
		    vysl = 0;
		    stovka = 0;
		}
		printf("slovo:%d, vysl: %d pom: %d, stovka: %d",slova[i],vysl,pom,stovka);    
	    }		
	    else zapor = -1;
	}
	printf("%d\n",zapor * (pom + vysl));
    }
    
    return 0;
}