#include<stdio.h>
#include<ctype.h>
#include<string.h>
#include<fstream.h>
char c;
FILE *g=fopen("text.out","w");


void cit()
{long n,i,nrc,nrl;
 ifstream f("text.in");

  char d;
  nrl=nrc=0;
  f.get(d);
  while(!f.eof())
  {c=d;
	if(isalpha(c))
    nrl++;
  f.get(d);
  if(isalpha(c)&&!isalpha(d))
    nrc++;     }

  f.close(); 
fprintf(g,"%ld",((nrl)/nrc));
}

int main()
{
  cit();
  fcloseall();
return 0;

}