#include <stdio.h>

int main ()
{
	int num = 0,
	    next = 0,
	    sum = 0;
	
	float average = 0;

	scanf("%d", &next);

	while (next >= 0)
	{
		num += 1;
		sum += next;
		scanf("%d", &next);
	}

	average = (float)sum / num;

	printf("You entered %d numbers.\n", num);
	printf("The sum of the numbers was %d.\n", sum);
	printf("The average of the numbers was %.1f.\n", average);

	return (0);
}