#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main()
{
	int S = 0,n = 0,adev=0;
	FILE* in = fopen("text.in", "r");
	if (in == NULL)
	{
		printf("Eroare la formarea fisierului de intrare!");
		return 1;
	}
	FILE* out = fopen("text.out", "w");
	char s[1024];
	fgets(s, 1024, in);
	for (int i = 0;i < strlen(s);i++)
	{
		if (isalpha(s[i]) == NULL)
		{
			if (adev == 1)
				n++;
			adev = 0;
		}
		else
		{
			S++;
			adev = 1;
		}
	}

	fprintf(out, "%d", S / n);
}