#include <fstream>
using namespace std;
ifstream f("text.in");
ofstream g("text.out");
char c;
bool ok;
int nr_cuv, nr_litere;
int main()
{
    while(f.get(c))
        if(isalpha((c)))
        {
            nr_litere ++;
            ok = true;
        }
        else if(ok)
        {
            nr_cuv ++;
            ok = false;
        }
    if(ok) nr_cuv ++;
    //g << nr_litere << "\n" << nr_cuv << "\n";
    g << nr_litere / nr_cuv;
    return 0;
}