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

using namespace std;

ifstream in;
ofstream out;

string s;

int nrc, nrl;

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

    getline(in,s);
    int ok = 0;
    for (int i = 0; i < s.size(); i++)
    {
        if (isalpha(s[i]))
        {
            nrc++;
            while ( i < s.size() and isalpha(s[i]) )
            {
                nrl++;
                i++;
            }
        }
    }
    out << nrl/nrc;
}