#include<stdio.h>
#include<ctype.h>
int main()
{
	 int l,L,x; 
	 char c,a;
	 FILE *f=fopen("text.in","r");
	 FILE *g=fopen("text.out","w");
	 l=0; L=0; a=' ';
	 fscanf (f,"%c",&c);
	 while(!feof(f))
	 	 {   
		   if(isalpha(c))L++;
		   else if(isalpha(a))l++;
		   a=c;	
		   fscanf (f,"%c",&c);
	       }
	 a=c;
	 if(isalpha(c))L++;
		   else if(isalpha(a))l++;
	 x=L/l;
	 fprintf(g,"%d",x);
	 fclose(f);
     fclose(g);
	 return 0;
}