#include <fstream>

using namespace std;

int main()
{
    ifstream fin("text.in");
    ofstream fout("text.out");
    int nrLitere=0, nrCuvinte=0;
    char c;
    bool ok=false;
    while(!fin.eof())
    {
        c = fin.get();
        if(isalpha(c))
        {
            if(!ok)
            {
                ok = true;
                nrCuvinte++;
            }
            nrLitere++;
        }
        else
        {
            ok = false;
        }
    }
    fout << nrLitere/nrCuvinte;
    fout.close();
    fin.close();
    return 0;
}