#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
int main()
{
	FILE *A = fopen("text.in", "r");
	FILE *B = fopen("text.out", "w");
	char buffer[1024];
	int nrlitere = 0;
	int nrcuv = 0;
	int ok = 0;
	while (fgets(buffer, 1024, A))
	{
		for (int i = 0; buffer[i] != '\0'; i++)
		{
			if (isalpha(buffer[i]))
			{
				ok = 0;
				nrlitere++;
			}
			if ((!isalpha(buffer[i + 1]))&&(ok==0))
			{
				ok = 1;
				nrcuv++;
			}
		}
	}
	fprintf(B, "%d", nrlitere / nrcuv);
	return 0;
}