#include <stdio.h>
#include <map>
#include <string>
using namespace std;

map <string, int> m;
char s[10000];

int main() {
	char *c;
	int min,vys,mil,hun,tis;
	m["zero"]=0;
	m["one"]=1;
	m["two"]=2;
	m["three"]=3;
	m["four"]=4;
	m["five"]=5;
	m["six"]=6;
	m["seven"]=7;
	m["eight"]=8;
	m["nine"]=9;
	m["ten"]=10;
	m["eleven"]=11;
	m["twelve"]=12;
	m["thirteen"]=13;
	m["fourteen"]=14;
	m["fifteen"]=15;
	m["sixteen"]=16;
	m["seventeen"]=17;
	m["eighteen"]=18;
	m["nineteen"]=19;
	m["twenty"]=20;
	m["thirty"]=30;
	m["forty"]=40;
	m["fifty"]=50;
	m["sixty"]=60;
	m["seventy"]=70;
	m["eighty"]=80;
	m["ninety"]=90;
	while (gets(s)) {
		if (!s[0]) return 0;
		vys=0; mil=0; tis=0; hun=0;
		c=strtok(s," ");
		if (!strcmp(c,"negative")) { min=1; c=strtok(NULL," "); }
		else min=0;
		do {
			if (!strcmp(c,"million")) { mil=vys; vys=0; }
			else if (!strcmp(c,"thousand")) { tis=vys; vys=0; }
			else if (!strcmp(c,"hundred")) { vys*=100; }
			else vys+=m[c];
		} while ((c=strtok(NULL," ")));
		vys+=mil*1000000+tis*1000;
		if (min) vys=-vys;
		printf("%d\n",vys);
	}
	return 0;
}