#include <bits/stdc++.h>
using namespace std ;
int main() {
	int T;
	string s;
	int sum(0),w(0),f(0);
	while(getline(cin,s)){
	   w=s.size();
	   for(int i=0; i<w; i++){
	   	if(isalpha(s[i])!=0) f=1;
	   	if(isalpha(s[i])==0&&f==1) {sum++; f=0;}
	   	if(i==w-1&&f==1) {sum++; f=0;}
	   } 
	   cout<<sum<<endl;
	   sum=0;
	}
}