题解 | #记负均正#

#include<iostream>
using namespace std;

int main()
{
    int n;
    while(cin >> n)
    {
        int number[n];
        int result1=0,result2=0;
        double result=0.0f;
        for(int i = 0; i<n; i++)
        {
            cin>>number[i];
            if(number[i] < 0)
            {
                result1++;
            }else if(number[i] > 0)
            {
                result2++;
                result += number[i];
            }
        }
        result = (double)result/(double)result2;
        cout << result1 <<" ";
        printf("%.1f", result);
        cout<<endl;
    }

    return 0;
}