#include <fstream>
#include <string>
#include <iostream>
using namespace std;

//i*(i-1)

int main(int argc,char **argv){
	ifstream ifs("text.in");
	ofstream ofs("text.out");
	char s,last='s';
	int c=0,l=0;
	while(ifs.good()){
		s=ifs.get();
		if((s>='a' && s<='z') || (s>='A' && s<='Z')){
			if(last=='s' )
				c++;
			l++;
			last='c';
		}
		else
			last='s';
		
	}
	ofs<<l/c<<endl;
	ofs.close();
}