#include <iostream>
#include <fstream>

using namespace std;

int main() {
	int nrc = 0, l = 0, ok = 0;
	char c;
	ifstream fin("text.in");
	ofstream fout("text.out");
	
	while (!fin.eof()) {
		c = fin.get();
		if ( (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ) {
			ok = 1;
			l++;
		}
		else {
			if (ok) nrc++;
			ok = 0;
		}
	}
	fout << (int) (l / nrc) << "\n";
	fin.close();
	fout.close();
	return 0;
}