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

int main() 
{
	char c;
	int t = 0, w = 0;
	FILE *f = fopen("text.in", "r");
	FILE *g = fopen("text.out", "w");
	while (((c = fgetc(f)) != EOF) && !isalpha(c));
	do {
		if (isalpha(c)) {
			t++;
		}
		else {
			w++;
			while (((c = fgetc(f)) != EOF) && !isalpha(c));
			t++;
		}
	} while ((c = fgetc(f)) != EOF);
	t--;
	fprintf(g, "%d", t / w);
	fclose(f);
	fclose(g);
}