#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;
}