//
//  main.cpp
//  Alex
//
//  Created by Hurjui Alexandru Mihai on 02/11/2018.
//  Copyright © 2019 Hurjui Alexandru Mihai. All rights reserved.
//

#include <fstream>
#include <string>
#include <cstring>
using namespace std;

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

int main()
{
    char c;
    bool ok = 0;
    int l = 0, nr = 0;
    while (fin.get(c))
    {
        if (isalpha(c))
        {
            l++;
            if (ok == 0)
            {
                nr++;
                ok = 1;
            }
        }
        else
            ok = 0;
    }
    fout << l/nr;
    return 0;
}