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

int main()
{
	FILE 	*in  = fopen("text.in", "rt"),
			*out = fopen("text.out", "wt");

	int numarCuvinte = 0,
		numarLitereTotal = 0;
	int interiorCuvant = 0;
	char litera;

	
	while(fscanf(in, "%c", &litera) != EOF)
		if((litera >= 'a' && litera <= 'z') || (litera >= 'A' && litera <= 'Z') )
		{
			interiorCuvant = 1;
			numarLitereTotal++;
		}
		else if(interiorCuvant == 1)
		{
			interiorCuvant = 0;
			numarCuvinte++;
		}

	fprintf(out, "%d", numarLitereTotal / numarCuvinte);
	
	fclose(in);
	fclose(out);
	return 0;
}