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Now, visiting nomadic people on the grassland with their wives and looking for Tibetan sheep and yaks have become the normal life of Tashi and his wife.解放初期，我国北方某地。退伍军人张国宝回到家乡杜家庄参加农业生产，父亲张老五因循守旧，由于原先没种过棉花，对于上级号召种良棉缺乏信心，国宝的未婚妻拉英也不知所措。地主杜天成、二流子刘老二趁机妖言惑众，从中作梗。而此时，果树突发的虫害更让缺少文化的乡亲们不知如何是好。国宝找到村长大牛、积极分子杨连升协商，找来良棉推广队，准备播种。愚昧的张老五见虫害日益严重，竞用迷信方法驱灾。国宝带头用科学方法治虫害，终于使大家从落后的生产方式中解放出来...2. Find a similar Kaggle competition. As a Kaggler who has not been in contact with me for a long time, I have completed the collection of basic analysis of all Kaggle competitions.In addition to solving the port problem of A, the serial number problem also needs to be paid attention to. The serial number corresponds to the sliding window. The fake TCP packet needs to be filled with the serial number. If the value of the serial number is not in the sliding window of B when it is sent to B before A, B will actively discard it. So we need to find the serial number that can fall into the sliding window between AB at that time. This can be solved violently, because the length of a sequence is 32 bits, and the value range is 0-4294967296. If the window size is like 65535 under Windows I caught in the above figure, I only need to divide, and I know that at most I only need to send 65537 (4294967296/65535=65537) packets to have a sequence number fall into the sliding window. The desired value can be calculated quickly by exhaustion on multiple control hosts.龙且将军只率领数千人追杀。