#include<stdio.h>
#include<cmath>

int main() {
	int n, f, sump = 0, sumo = 0, countp = 0, counto = 0;
	float srp=0, sro=0;
	scanf_s("%d", &n);
	for( int i = 1 ; i <= n; i++) {
		scanf_s("%d", &f);
		if (f > 0) {
			sump += f;
			countp += 1;
		}
		else {
			sumo += f;
			counto += 1;
		}
	}
	srp = sump / countp;
	sro = sumo / counto;

	printf("%d %d %d %d", sumo, counto, sump, countp);

	if (srp > abs(sro)) {
		printf("%f", srp);
	}
	else {
		printf("%f", sro);
	}
	system("pause");
	return 0;
}