ListStatistics.java

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

public class Main {
    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        int count_of_positives = 0;
        int sum_of_negatives = 0;

        ArrayList<Integer> positives = new ArrayList<Integer>();
        ArrayList<Integer> negatives = new ArrayList<Integer>();

        for (int i = 0; i < n ; i++){
            int numbers = input.nextInt();
            if(numbers>=0){
                positives.add(numbers);
                count_of_positives++;
            } else{
                negatives.add(numbers);
                sum_of_negatives+=numbers;
            }
        }
        System.out.println(positives);
        System.out.println(negatives);

        System.out.println("Count of positives: " + count_of_positives);
        System.out.println("Sum of negatives: " + sum_of_negatives);
    }
}