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

int main()
{
	FILE *in = 0;
	FILE *out = 0;
	char ch = 0;
	int nr_cuv = 0;
	int nr_caract = 0;

	in = fopen("text.in", "r");
	out = fopen("text.out", "w");

	while(1)
	{
		fscanf(in, "%c", &ch);
		
		if(ch == '\0')
		{
			break;
		}

		if((ch == ' ') || (ch == '-'))
		{
			nr_cuv ++;
		}
		
		nr_caract ++;
		
	}
	
	fprintf(out, "%d", (int)(nr_caract / nr_cuv ));

	fclose(in);
	in = 0;
	
	fclose(out);
	out = 0;

	return 0;
}