public void task1()
    {
        int [] mas = new int[20];
        int sum=0;
        for (int i = 0; i <mas.length; i++)
        {
            mas[i] = (int)(Math.random()*20)-10;
            sum += i%2 ==  0 ? mas[i]:0;
            System.out.print("["+i+"]"+mas[i] + " ");
        }
        System.out.println();
        System.out.println(sum);
    };

    public void task2()
    {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        String [] mas = new String[n];
        int sumLength = 0;
        for (int i = 0; i < n ; i++)
        {
            mas[i] = scan.next();
            sumLength += mas[i].length();
        }
        int avgLength = sumLength/n;
        System.out.println(avgLength);
        for (int j = 0; j < mas.length ; j++)
        {
            System.out.println(mas[j].length()<avgLength?mas[j]:);
        }
    };