uniquecode

说明：  用以判决输入码字是否唯一可译码 先输入总的码字个数 再输入各个码字 程序会判断出该码字集合是否为唯一可译码
(Enter the code word for the decision whether or not only decoding the first codeword input total number of re-importation of all code words of the process will determine whether the code word set only decoding)