#include<fstream>
#include <iostream>
#include<string.h>

using namespace std;

ifstream fin("text.in");
ofstream fout("text.out");

int main()
{
	int n=100, aux=0,c=1, lm=0;
	char a;

	



	while (fin>> noskipws>> a) {
	
			if (a == ' ') {
				c++;
			}
			if (a != ' ' && a !=33 && a!=44 && a!=45) {
				aux++;
			}
			cout << a;
		
	}

	lm = aux / c;
	fout << lm<<" ";
	return 0;
}