#include <iostream>
#include <stdio.h>
#include <string.h>
#include <algorithm>
#include <map>

#include <cctype>
#include <stdlib.h>
#include <string>
using namespace std;

const int maxn = 1000000 + 10;

char s[maxn]; //（use to store each line）
map<string, int> m; //（map English words to numbers）

int main()
{

	//playing table method, map all English words showed above to corresponding numbers
	m["negative"] = -1; 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;
	m["hundred"] = 100; m["thousand"] = 1000; m["million"] = 1000000;
	while (gets(s))
	{
		int len = strlen(s);
		if (len == 0) //（it is end if the length of the line is 0）
			break;
		__________（1）_________;

		//ensure there will be a character(not alphabet) after each word
		s[len] = '\0';
		long long int ans = 0, tmp = 0;
		int is_negative = 0;
		//million，thousand
		//calculate how many millions, thousands and ones it has, add them up
		for (int i = 0; i< len; i++)
		{
			if (isalpha(s[i])) //（if it is true, there will be a beginning of a word）
			{
				string t = "";
				while (isalpha(s[i])) //（a word will be ended, if a blank is read）
					______（2）________;
				//(there are 4 special words need to judge and deal with)
				if (m[t] == -1)
				{
					is_negative = 1;
				}
				else if (m[t] == 100)
				{
					_______（3）________;
				}
				else if (m[t] == 1000)
				{
					_______（4）________;
					_______（5）________;
					tmp = 0;
				}
				else if (m[t] == 1000000)
				{
					________（6）_________;
					________（7）________;
					tmp = 0;
				}
				else
				{
					tmp += m[t];
				}
			}
		}
		_________（8）_________;
		if (is_negative) //judge if minus is needed)
			cout << '-';
		cout << ans << endl;
	}
	return 0;
}