题解 | #记负均正II#

import java.text.DecimalFormat;
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        double sum = 0,  othersTotal = 0;
        int counter = 0;
        while (in.hasNextInt()) {
            int number = in.nextInt();
            if (number < 0) counter++;
            else {
                sum += number;
                othersTotal++;
            }
        }
        System.out.println(counter);
        if(othersTotal!=0) System.out.printf("%.1f\n",sum/othersTotal);
        else System.out.println(0.0);
    }
}