Полине, удалить

        int n;
        Scanner in = new Scanner(System.in);
        n = in.nextInt()
        int number[] = new int[n];

        for (int i = 0; i < n; i++) {
            number[i] = in.nextInt();
        }

        ArrayList<int> buffer = new ArrayList<>();
        for (int i = 0; i < n; i++) {
            if (number[i] % 2 != (i + 1) % 2) {
                buffer.add(i);
            }
        }

        if (buffer.size() == 2) {
            if (number[buffer.get(0)] % 2 != number[buffer.get(1)] % 2) {
                System.out.print((buffer.get(0) + 1) + " " + (buffer.get(1) + 1));
            } else {
                System.out.print("-1 -1");
            }
        } else {
            System.out.print("-1 -1");
        }