记负均正II (java)

import java.util.Scanner;
import java.util.ArrayList;

public class Main{

    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        while(sc.hasNext()){
           al.add(sc.nextInt());
        }
        int count1 = 0,count2 = 0;
        int sum = 0;
        for(int i = 0; i < al.size(); i++){
            if(al.get(i) < 0){
                count1++;
            }else{
                count2++;
                sum += al.get(i);
            }
        }
        System.out.println(count1);
        System.out.printf("%.1f\n",sum * 1.0 / count2);


        sc.close();
    }

}