"""Binary index tree
Or Fenwick tree

http://www.geeksforgeeks.org/binary-indexed-tree-or-fenwick-tree-2/
"""

class BinaryIndexTree(object):

    """"""

    def __init__(self):
        """"""
        pass


def main():
    bit = BinaryIndexTree()
    print bit


if __name__ == '__main__':
    main()
