题解 | #记负均正II#

int main()
{
    int num=0;
    int negative=0;
    int n=0,sum=0;
    while(scanf("%d",&num) !=EOF)
    {
        if(num<0)
            negative++;
        else
        {
            sum+=num;
            n++;
        }
    }
    double average=n==0?0:sum/(n*1.0);
    printf("%d\n",negative);
    printf("%.1lf\n",average);
    return 0;
}