#include <iostream.h>
#include <fstream.h>
int main()
{
    ifstream f("text.in");
    ofstream g("text.out");
    char ch;
    int len=0,k=0,i=0,cuv=0;
    while (!f.eof())
          {
          f.get(ch);
          if ( (ch>=97) && (ch<=122) || (ch>=65) && (ch<=90) ) 
             {
             len++;
             if (k==0) cuv++;
             k=1;
             }
          else k=0;
          }
    g<<len/cuv;
    g.close();
    f.close();
    return 0;
}