// text.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "fstream"
#include "string"
using namespace std;
int main()
{
	ifstream f("text.in");
	ofstream g("text.out");
	string sir;
	int i=0;
	int nr_cuvinte=0,nr_litere=0;
	int ultimul=0;
	while(!f.eof())
	{
		sir=f.get();
		if(((int)sir[i]>=65)&&((int)sir[i]<=89))
		{
			if(!ultimul)
				nr_cuvinte++;
			ultimul=1;
			nr_litere++;
		}
		else
		if(((int)sir[i]>=97)&&((int)sir[i]<=122))
		{
			if(!ultimul)
				nr_cuvinte++;
			ultimul=1;
			nr_litere++;
		}
		else
			ultimul=0;
	i=0;
	}	
	g<<nr_litere/nr_cuvinte;
	return 0;
}