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Let's first implement the following simple publish-subscribe mode. The code is as follows:In 2013, investment in shrimps was 70,000 yuan, 30,000 yuan in loach, ricefield eel, snail feed, etc., 15,000 yuan in labor, 7,000 yuan in digging two ponds, 23,000 yuan in net gear and living expenses, etc., totaling 145,000 yuan. In 2013, it sold about 25,000 yuan of shrimps, miscellaneous fish and so on, and lost 120,000 yuan in 2013.这些东西虽然平常，也不是随便喝的，有不少忌讳呢。赚到了大钱，却无法与家人分享，这的确是一件难过的事情。电影根据残奥冠军苏桦伟真人真事改编。苏桦伟生来因黄疸病导致脑痉挛，无法正常站立行走。而苏妈没有放弃，不仅帮助儿子站了起来，还发掘了他的跑步天赋，直到苏桦伟被残障田径队选中，夺得残奥会冠军并打破世界纪录，这对神奇母子的热血励志传奇开始家喻户晓。(1) Two vertical mast lights to replace the lights specified in Article 23, paragraph 1 (1) or paragraph 1 (2). When the towing length from the stern of the tugboat to the rear end of the towed object exceeds 200m, three such lights are vertically displayed;Define the interface first: