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 count = 0;
        int sum = 0;
        int non = 0;
        float avg = 0.0f;
        while (in.hasNextInt()) {
            int num = in.nextInt();
            if (num < 0) {
                count++;
            } else {
                non++;
                sum += num;
                avg = (float) sum / non;
            }
        }
        System.out.println(count);
        System.out.printf("%.1f", avg);
    }
}