#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;
}