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

char t1[1024], t2[1024], *curr, *next, *ptr;
char out[10];

char *wnum[] = {
			"zero",
			"one",
			"two",
			"three",
			"four",
			"five",
			"six",
			"seven",
			"eight",
			"nine"
		};

char *wteen[] = {
			"ten",
			"eleven",
			"twelve",
			"thirteen",
			"fourteen",
			"fifteen",
			"sixteen",
			"seventeen",
			"eighteen",
			"nineteen"
};

char *wdec[] = {"",
			"",
			"twenty",
			"thirty",
			"forty",
			"fifty",
			"sixty",
			"seventy",
			"eighty",
			"ninety"
};

int i, neg, num, cele;

int main() {
	for(;;) {
		curr = t1;
		next = t2;
		if (scanf("%s", curr) < 0)
			break;
		if (!isalnum(curr[0]))
			break;
		out[0] = '\0';
		num = cele = 0;
		while (curr && isalnum(curr[0])) {
			char c;
			c = getchar();
/*			printf("%c\n", c);
*/			if ((c == '\n') || c == EOF)
				next = NULL;
			else
				scanf("%s", next);
			if (!strcmp(curr, "negative")) 
				printf("-");
			
			else {	
				for (i=0; i<=9; i++)
					if (!strcmp(curr, wnum[i])) {
							num += i;
							/*printf("num: %d\n", num);
							*/break;
						}
				if (i > 9) 
					for (i=0; i<=9; i++)
						if (!strcmp(curr, wdec[i])) {
							num += 10*i;
							/*printf("dec: %d\n", num);
							*/break;
						}
				if (i > 9) 
					for (i=0; i<=9; i++)
						if (!strcmp(curr, wteen[i])) {
							num += 10+i;
							/*printf("teen: %d\n", num);
							*/break;
						}
				if (i > 9) {
					/*printf("x: %s\n" , curr);
					*/if (!strcmp(curr, "hundred")) 
						num *= 100;
					else if (!strcmp(curr, "thousand")) {
						cele += num * 1000;
						num = 0;
					}
					else if (!strcmp(curr, "million")) {
						cele += num * 1000000;
						num = 0;
					}
				}

			}

			ptr = next;
			next = curr;
			curr = ptr;
		}
		printf("%d\n", cele + num);
	}
	return 0;
}