#include<fstream>
#include<string.h>
using namespace std;
int main()
{
    int i, contor=0,aux,cuvant=0;
    char c,dinainte;
    ifstream f("text.in");
    ofstream g("text.out");

    dinainte='#';
    while (f.get(c))
    {
          if ((c>='a'&&c<='z')||(c>='A'&&c<='Z'))  //daca ce am citit este litera
          {
                                     contor++;
          if (dinainte<'A'||(dinainte>'Z'&&dinainte<'a')||dinainte>'z')
                                     cuvant++;  
                                     }

 dinainte=c;   
}
    
    g<<contor/cuvant;
    return 0;
}