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

int main()
{
	char cuvant;
	int lungTotal = 0, nrCuvinte = 0, ok = 0;
	FILE *f = fopen("text.in","r");
	FILE *g = fopen("text.out","w");

	while ( !(feof(f)) )
	{
		fscanf(f,"%c",&cuvant);

		if ((cuvant >= 'A' && cuvant <= 'Z') || (cuvant >= 'a' && cuvant <= 'z'))
		{
			ok = 1;
			lungTotal++;
		}
		else
		{
			if (ok == 1)
			{
				ok = 0;
				nrCuvinte++;
			}
		}
	}

	nrCuvinte++;

	fprintf(g,"%d",lungTotal/nrCuvinte);

	fclose(f);
	fclose(g);
}