#include <bits/stdc++.h>
using namespace std;

#define ll long long 
#define fisier 1
const int mxN = 2e5;
int l, w, ok;
int32_t main(){
	#ifdef fisier
        ifstream cin("text.in");
        ofstream cout("text.out");
    #endif

	ios_base::sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);

	char c;
	while (cin.get(c)){
		if (isalpha(c) != 0 && ok == 0)
			ok = 1, l++, w++;
		else if(isalpha(c) !=0)
			l++;
		else
			ok = 0;
	}
	cout << l / w;
	//cout << s.size();	
}