#include <iostream>
#include <fstream>

using namespace std;

int main ()
{
    ifstream f("text.in");
    ofstream g("text.out");

    char caracter;
    int nr_cuvinte, nr_litere;

    nr_cuvinte=1; nr_litere=0;

    while(f.get(caracter))
    {
        if(caracter>='A' && caracter<='z')
            nr_litere++;
        else
            if(caracter==' ')
                nr_cuvinte++;
    }

    g<<nr_litere/nr_cuvinte;

    f.close();
    g.close();

    return 0;
}