#include <fstream>

using namespace std;

int cuv, litere;

char c;

bool ok;

int main()

{

    ifstream f("text.in");

    ofstream g("text.out");

    while(f.get(c))

    {

        if(c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')

        {

            if(ok == false) cuv ++;

            litere ++;

            ok = true;

        }

        else ok = false;

    }

    g << litere / cuv;

    return 0;

}