#include <fstream>
#include <string.h>
using namespace std;
int main()
{
    int contor=0, cuvant=0,i;
    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'))
          {contor++;
          if((dinainte<'A'||(dinainte>'Z' && dinainte <'a') ||dinainte>'Z')
          cuvant++;}
          dinainte=c;
          }
          g<<contor/cuvant;
          reutrn 0;
          }