#include <strings.h>
#include <stdio.h>

const struct {
 char *cislo;
  int number; } cisla[]={
	{"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 },
	{"hundred",100},
	{"thousand",1000 },
	{"million",1000000},
	{"*",0}};

int main(void)
{
char *s;
int des,i,ret,neg=0;
char line[100];

while (fgets(line,sizeof(line),stdin)!=NULL) {
des=0;
ret=0;
neg=0;
    line[strlen(line)-1]='\0';
    s=strtok(line," ");
    if (!strcmp(line,"negative")) neg=1;
while (s!=NULL) {
    if (s[0]=='\n') return 0;
    i=0;
    while (cisla[i].cislo[0]!='*') {
    if (!strcmp(cisla[i].cislo,s)) {
    	    if (cisla[i].number > des) {
		    if (des) {
			if ((cisla[i].number*des) >ret) ret=(ret+des)*cisla[i].number;
			else ret=ret+(des*cisla[i].number);
			des=0;
			}
		    else des=cisla[i].number;
		    
		    }
	    else {
	    	des+=cisla[i].number;
		}
	    break;
	    }
    i++;
    }
    s=strtok(NULL," ");
}
    if (des) ret+=des;
    if (neg) ret*=-1;
    printf("%d\n",ret);
    }
return 0;
}