#include <iostream>

#include <cstring>

#include <fstream>



using namespace std;



ifstream fin("text.in");

ofstream fout("text.out");



char caracter;

int ok=0, nr_litere=0, nr_cuvinte=0;



int main()

{

    while(fin.get(caracter))

    {

        if(isalpha(caracter))

        {

            ok=1;

            nr_litere++;

        }

        else

        {

            if(ok==1)

            {

                nr_cuvinte++;

            }

            ok=0;

        }

    }

    fout<<(int)nr_litere/nr_cuvinte;

    return 0;

}