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

bool is_letter(char c) { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); }
int main()
{
	char c;
	bool k = false;
	int words = 0, letters = 0;
	FILE* in  = fopen("text.in", "r");
	FILE* out = fopen("text.out", "w");
	while (c = fgetc(in))
	{
		if (feof(in))
		{
			break;
		}
		if (is_letter(c))
		{
			letters++;
			if (k == false){
				words++;
				k = true;
			}
		}
		else k = false;

	}
	
	fprintf(out,"%d", letters / words);
	fclose(out);
	return 0;
}