题解 | #记负均正II#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int zs = 0;
        int fs = 0;
        double zsSum = 0.0;
        while (in.hasNextDouble()) { 
            double d = in.nextDouble();
            if (d > 0.0){
                zs++;
                zsSum += d;
            }
            else
            {
                fs++;
            }
        }
        System.out.println(fs);
        if (zs > 0){
            double avg = zsSum / zs;
            System.out.println( String.format("%.1f",avg) );

        }
        else
        {
            System.out.println("0.0");
        }
    }
}