#include <iostream>
#include <fstream>
#include <cstdlib>
using namespace std;

ifstream fin("text.in");
ofstream fout("text.out");

int main()
{
    char c = 0;
    int l = 0, nc = 0;
    bool cuvant = false;
    while (fin.get(c))
    {
        if (isalpha(c))
        {
            ++l;
            cuvant = true;
        }
        else if (cuvant)
            {
                ++nc;
                cuvant = false;
            }
    }
    fout << l / nc;
    fin.close();
    fout.close();
}