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

int main()
{
	FILE *f,*g;
	int in_cuvant=0,nr_cuv=0,len_tot=0,init;
	char c;

	f=fopen("text.in","r");

	while(!feof(f))
	{
		fscanf(f,"%c",&c);
		init=in_cuvant;
		if ( (c >= 'a' && c<='z') || (c >= 'A' && c<='Z') )
			{
				in_cuvant=1;
				len_tot++;
			}
		else
			{
				in_cuvant=0;
			}
		if (init==0 && in_cuvant==1) nr_cuv++;
			
	}
	fclose(f);

	g=fopen("text.out","w");
	fprintf(g,"%i",len_tot/nr_cuv);
	fclose(g);
	return 0;
}