#include <fstream>
using namespace std;int main(){ifstream in("text.in");ofstream out("text.out");char n=in.get();bool text=false;int cuvinte=0,litere=0;while(in.eof()!=1){if((n>='a'&&n<='z')||(n>='A'&&n<='Z')){if(!text){cuvinte++;text=true;}litere++;}else{text=false;}n=in.get();}int r=litere/cuvinte;out<<r;}