#include <iostream>
#include <fstream>
#include <string>

using namespace std;

ifstream in;
ofstream out;

string s;

int nrc, nrl, i;

int main()
{
    in.open("text.in");
    out.open("text.out");

    getline(in, s);
    while (i < s.size())
    {
        if (isalpha(s[i]))
        {
            nrc++;
            while (i < s.size() and isalpha(s[i]))
            {
                nrl++;
                i++;
            }
        }
        else
            i++;
    }
    out << nrl / nrc;
}