#include <fstream>
#include <cstring>

using namespace std;

ifstream f("text.in");
ofstream g("text.out");

int lt, wd;
char c;
bool ok;

int main()
{
    while(f.get(c))
    {
        if(isalpha(c))
        {
            lt ++;
            ok = true;
        }
        else if(ok == true)
        {
            wd ++;
            ok = false;
        }
    }
    g << lt / wd << "\n";
    return 0;
}