#include <fstream>

int main(void)
{
    int length = 0, spaces = 0;
    bool pass;
    std::ifstream in("text.in");
    std::ofstream out("text.out");
    std::string line;
    std::getline(in, line);

    for(unsigned int i = 0; i < line.size(); i++)
    {
        if(isalpha(line[i]))
        {
            length++;
            pass = true;
        }
        else
        {
            if(pass)
            {
                spaces++;
                pass = false;
            }
        }
    }
    out << length/spaces;
}