#include <iostream>
using namespace std;

int main()
{
	char s[80];
	int slovo, count = 0;
	cin.get(s, 80);
	int i = 0;
	while (s[i] == ' ' && s[i] != '\0')
	{
		i++;
		slovo = 0;
	}
	while (s[i] != '\0') {
		if (s[i] != ' ' && slovo == 0)
		{
			slovo = 1;
			count++;
		}
		else if (s[i] == ' ')
		{
			slovo = 0;
			i++;
		}
		else if (s[i] == '...')
		{
			slovo = 0;
			i++;
		}
		else if (s[i] == '.' && slovo == 0)
		{
			slovo = 1;
			count++;
		}
	}
	cout << count;
	system("pause");
	return 0;
}