// puncte
#include <fstream>
#include <vector>
#include <string>
#include <cmath>
#include <iostream>
#include <map>
#include <sstream>
using namespace std;

#define in "text.in"
#define out "text.out"

typedef long long int INT;

INT lungime, nrc,ok;
int k;
char c;

int main()
{
    ifstream fin ( in );
    ofstream fout ( out );
    
    lungime = nrc = k = 0;
    while ( !fin.eof() )
    {
          fin.get(c);
          if ( isalpha( c ) )
          {
               lungime++;
               if ( k == 0 )
               {   
                   nrc++;
               }
               k = 1;
          }
          else
          {
               k = 0;
          }
    }
    ok = (int)(lungime/nrc);
    fout << ok << "\n";
    fin.close();
    fout.close();
    
    return 0;
}