冬令营记事之三

早上听Mr.W讲课,讲了些关于catelan数的东西~都知道,比较无聊,但拓展了视野.下午王宏老师讲CEOI2005,终于知道怎么做了.
晚饭不错,有蛋炒饭.晚上听集训队员讲课,收获不小.
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