import lzma
import sys
import os


def get_rank_file_object(args_count, rank_ind):
    base_name = "base_{}_rank_{}.txt".format(args_count, rank_ind)
    if os.path.exists(base_name):
        return open(base_name, 'rb')
    elif os.path.exists(base_name + ".xz"):
        return lzma.open(base_name + ".xz", 'rb')
    else:
        print("No results file for {} arguments rank {}".format(args_count, rank_ind))
        sys.exit(1)

def is_function_exists(function_number, file_object):
    file_object.seek(function_number // 8)
    result_byte = ord(file_object.read(1))
    return (result_byte >> (7 - function_number % 8)) % 2 == 1


def function_values_to_number(values):
    assert set(values).issubset({'0','1'})
    res = 0
    for ch in values:
        res *= 2
        if ch == '1':
            res += 1
    return res


def main():
    args_count = {
        8: 3,
        16: 4,
        32: 5,
    }[len(sys.argv[1])]
    function_number = function_values_to_number(sys.argv[1])
    print("Function number is {}".format(function_number))
    for rank_ind in range(1, 10):
        if is_function_exists(function_number, get_rank_file_object(args_count, rank_ind)):
            print("Result len is {}".format(rank_ind))
            return

if __name__ == "__main__":
    main()