//#include <iostream>
#include <fstream>
#include <string>
#include <cctype>

using namespace std;

int main()
{
    int s=2;
    string line;
    ifstream f("text.in");
    getline(f, line);
    for (int i=0; i < line.length(); i++) {
        if (!isalpha(line[i])) s++;
    }
    ofstream cout ("text.out");
    cout << line.length()/s;
    return 0;
}