private void readData(String filename) {
        Scanner scanner = null;

        try {

            scanner = new Scanner(new File(filename));

            this.N = scanner.nextInt();
            this.K = scanner.nextLong();
            this.vector = new long[N];

            for(int i = 0; i < N; i++)
                this.vector[i] = scanner.nextInt();

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (scanner != null)
                    scanner.close();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }