题解 | #记负均正#

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
//HJ97 记负均正
int main()
{
	int n,m;
	int zheng = 0;
	int fu = 0;
	int zongshu = 0;
	scanf("%d", &n);
	for (int i = 0; i < n; i++)
	{
		scanf("%d", &m);
		if (m > 0)
		{
            zongshu += m;
			zheng++;
		}
		if (m < 0)
		{
			fu++;
		}
		else
		{
			;
		}
	}
	
	if (zheng == 0)
	{
		printf("%d %.1f", fu, (double)zheng);
	}
	else
	{
		printf("%d %.1f", fu,(double)zongshu/zheng); 
	}
	return 0;

}