题解 | #记负均正II#

import javax.print.attribute.standard.QueuedJobCount;
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        List<Integer> list = new ArrayList<>();
        int count1 = 0;
        int count2 = 0;
        int sum = 0;
        while (sc.hasNextInt()) {
            int num = sc.nextInt();
            if (num < 0) {
                count1++;
            } else {
                count2++;
                sum += num;
            }
        }
        System.out.println(count1);
        if (sum == 0) {
            System.out.println("0.0");
        } else {
            System.out.printf("%.1f", sum / (count2 * 1.0));
        }
    }
}