#include <stdio.h>
#include <string.h>
#include <ctype.h>

FILE *f,*g;

char m;
unsigned long p,nr1,nr,cuv;
int main()
{

f=fopen("text.in","r");
g=fopen("text.out","w");
while(!feof(f))
{
  fscanf(f,"%c",&m);
  if (isupper(m) or islower(m)) {nr++;nr1++;}
  else if (nr1!=0) {cuv++; nr1=0;}
}
p=nr/cuv;
fprintf(g,"%d",p);

fclose(g);
return 0;



}