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

char* strrev(char* str, char* in)
{
	int i;
	int len = strlen(str);
	for(i=0; i < len; i++)
	{
		in[i] = str[len-i-1];
	}
	in[i+1] = 0;
	return in;
}

char* getright(char* str, int index, char * out)
{
	int i = 0, j = 0,k=0;
	int len = strlen(str);

	for(i = len-index-1; i >= 0; i--)
	{
		if(str[i] == ' ')
		{
			
			break;
		}
		j++;
	}
	i++;

	for(k = 0; k < j+1;  k++)
	{
		out[k] = str[i+k];
	}
	out[k] = 0;

	if (k>1)
		if (out[k-1] == ' ')
			out[k-1] = 0;

	return out;
}

int main()
{
	char line[1024];
	char slovo[512];
	int delkaslova = 0;
	int delka = 0;
	long res = 0;
	long zeros = 1;

	while(1)
	{
		gets(line);
		if(strlen(line) == 0) break;

		zeros = 1;
		res = 0;
		delka = 0;
		delkaslova = 0;

	while (1)	
	{
		getright(line, delka, slovo);
/*printf("%s\n",slovo);*/

		delkaslova = strlen(slovo);
		if (delkaslova == 0) break;

		delka += delkaslova+1;

		if(!strcmp(slovo, "negative"))
		{
			res *= -1;
		}
		if(!strcmp(slovo, "one"))
		{
			res += 1 * zeros;
		}
		if(!strcmp(slovo, "two"))
		{
			res += 2 * zeros;			
		}
		if(!strcmp(slovo, "three"))
		{
			res += 3 * zeros;			
		}
		if(!strcmp(slovo, "four"))
		{
			res += 4 * zeros;			
		}
		if(!strcmp(slovo, "five"))
		{
			res += 5 * zeros;			
		}
		if(!strcmp(slovo, "six"))
		{
			res += 6 * zeros;			
		}
		if(!strcmp(slovo, "seven"))
		{
			res += 7 * zeros;			
		}
		if(!strcmp(slovo, "eight"))
		{
			res += 8 * zeros;			
		}
		if(!strcmp(slovo, "nine"))
		{
			res += 9 * zeros;			
		}
		if(!strcmp(slovo, "ten"))
		{
			res += 10 * zeros;			
		}
		if(!strcmp(slovo, "eleven"))
		{
			res += 11 * zeros;			
		}
		if(!strcmp(slovo, "twelve"))
		{
			res += 12 * zeros;			
		}
		if(!strcmp(slovo, "thirteen"))
		{
			res += 13 * zeros;			
		}
		if(!strcmp(slovo, "fourteen"))
		{
			res += 14 * zeros;			
		}
		if(!strcmp(slovo, "fifteen"))
		{
			res += 15 * zeros;			
		}
		if(!strcmp(slovo, "sixteen"))
		{
			res += 16 * zeros;			
		}
		if(!strcmp(slovo, "seventeen"))
		{
			res += 17 * zeros;			
		}
		if(!strcmp(slovo, "eighteen"))
		{
			res += 18 * zeros;			
		}
		if(!strcmp(slovo, "nineteen"))
		{
			res += 19 * zeros;			
		}
		if(!strcmp(slovo, "twenty"))
		{
			res += 20 * zeros;			
		}
		if(!strcmp(slovo, "thirty"))
		{
			res += 30 * zeros;			
		}
		if(!strcmp(slovo, "forty"))
		{
			res += 40 * zeros;			
		}
		if(!strcmp(slovo, "fifty"))
		{
			res += 50 * zeros;			
		}		
		if(!strcmp(slovo, "sixty"))
		{
			res += 60 * zeros;			
		}	
		if(!strcmp(slovo, "seventy"))
		{
			res += 70 * zeros;			
		}
		if(!strcmp(slovo, "eighty"))
		{
			res += 80 * zeros;			
		}
		if(!strcmp(slovo, "ninety"))
		{
			res += 90 * zeros;			
		}
		if(!strcmp(slovo, "hundred"))
		{
			if (zeros == 1000)
				zeros = zeros*100;
			else
			if (zeros == 1000000)
				zeros = zeros*100;
			else
				zeros = 100;
		}
		if(!strcmp(slovo, "thousand"))
		{
			if (zeros==1000000)
				zeros = 1000*zeros;
			else
				zeros = 1000;
		}
		if(!strcmp(slovo, "million"))
		{
			zeros = 1000000;
		}
/*printf("Res: %ld Z: %ld\n", res, zeros);*/
	}
	
	printf("%ld\n", res);

	}

	return 0;
}