//http://www.infoarena.ro/problema/text
#include<fstream>
#include<iostream>
#include<stdio.h>

using namespace std;
int dim, cuv, k;
char c;

void citire()
{
  int sol;
  ifstream f("text.in");
  ofstream g("text.out");
  f>>c;
  while (!f.eof())
     {
    if (c>='a' && c<='z' || c>='A'&& c<='Z')
      {
         dim++;
         if (k==0)
        cuv++;
         k=1;
      }
      else k=0;
      f>>c;
     }
  sol=dim/cuv;
  g<<sol;
}

int main()
{
  citire();
  return 0;
}