// Created by PhantomCracker. Copyright(c) PhantomCracker
 
 
#include <iostream>
#include <cstring>
#include <fstream>
 
using namespace std;
 
ifstream f("text.in");
ofstream g("text.out");
 
char c;
int numar_cuvinte, numar_caractere, cuvant, caracter;
 
int main()
{
    cuvant = 1;
 
// citire fisier
    while(f.get(c))
    {
        if(c>='a' && c<='z' || c>='A' && c<='Z')
        {
            if(cuvant == 1)numar_cuvinte++;
            cuvant = 0;
            numar_caractere++;
            caracter = 1;
        }
        else if(c!='-') cuvant = 1;
        if(caracter == 0 && strchr(",-?!;':", c))
        {
            numar_cuvinte++;
            caracter = 0;
        }
    }
 
    g<<numar_caractere/numar_cuvinte;
 
/*// afisare sir de caractere
    for(i=0; i<strlen(text); i++)
        cout<<text[i];*/
 
 
 
    cout<<endl;
    return 0;
}