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六年前，首尔发生了一宗甚多疑点的枪战，来自不同组织的两个特工宋知元（姜东元饰）和李汉奎（宋康昊饰）同时执行任务，，但因案件没有结局宋知元被国政院强行辞退，而李汉奎也被自己的组织以无故罪名抛弃。那次枪战是二人的首次碰面，不过只是擦肩而过。 六年后，偶尔相遇的这两个热血男子惺惺相识，因各怀心中要追寻的案件，只能对对方隐瞒真实的身份而以朋友方式相处，正在他们结下深刻友情时，知元发觉6年前的那天，汉奎也同时出现过在案发现场并且身份不明，二人的人生开始了新的一幕...For codes of the same length, theoretically, the further the coding distance between any two categories, the stronger the error correction capability. Therefore, when the code length is small, the theoretical optimal code can be calculated according to this principle. However, it is difficult to effectively determine the optimal code when the code length is slightly larger. In fact, this is an NP-hard problem. However, we usually do not need to obtain theoretical optimal codes, because non-optimal codes can often produce good enough classifiers in practice. On the other hand, it is not that the better the theoretical properties of coding, the better the classification performance, because the machine learning problem involves many factors, such as dismantling multiple classes into two "class subsets", and the difficulty of distinguishing the two class subsets formed by different dismantling methods is often different, that is, the difficulty of the two classification problems caused by them is different. Therefore, one theory has a good quality of error correction, but it leads to a difficult coding for the two-classification problem, which is worse than the other theory, but it leads to a simpler coding for the two-classification problem, and it is hard to say which is better or weaker in the final performance of the model.戚继光一直没有为自己辩解，只有此时，内心才微微变得柔软，他发现自己竟没一个人可以倾诉。丁子龙、梅远、姜二宝、程鹏、张志刚、廖军因为不同原因参军当了消防兵，他们在一次又一次的血与火的考验中浴火成长。他们参与处理危险化学品泄漏、道路交通事故、建筑坍塌、重大安全生产事故、群众遇险事件和突发公共卫生事件的救援工作，哪里有危险，哪里就有他们的身影。不幸的事情发生了，一家鞭炮厂爆炸，紧急救援中，张志刚英勇牺牲。面对一同入伍的好友，廖军受不了眼前生离死别的打击，提前退伍。而丁子龙、梅远、姜二宝、程鹏四人则在《送战友》的歌声中揩干眼泪，完成了从菜鸟到消防尖兵的嬗变，成为新时期最可爱的消防战士。时间是1918年，中华大地饱经磨难，战火连连，内有军阀割据，外有强梁入侵，中国的命运前途未卜。湖南长沙，以毛泽东（保剑锋 饰）、蔡和森（陶帅 饰）、萧子升（钱枫 饰）等一众忧国忧民的热血青年组织起新民学会，共同探讨祖国的未来。为了筹措赴法勤工俭学的款项，毛和朋友们辗转北上，来至北京大学投奔恩师杨昌济。经恩师介绍，毛在北大图书馆人管理员，在此期间他结识了辜鸿铭、陈独秀（李子雄 饰）、李大钊（石凉 饰）等文化巨擎，更接触到了改变了他乃至全中国命运的马克思主义。《诛仙》从来就不是一部令人痛快的小说，《笑傲江湖》中令狐冲天资聪慧，性格洒脱，但张小凡却是资质一般、老实木讷，就像悬崖上的小草，默默无闻，卑微顽强地活着。　　焦急的刘文庆尴尬地发现林星的身边竞多了一个自称是林星男朋友的吴晓，吴晓在宴会上不俗的表现，令林星兴奋。当林星想为此答谢的时候，吴晓也提出了一个更加荒唐的要求……