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sd0061, the legend of Beihang University ACM-ICPC Team, retired last year leaving a group of noobs. Noobs have no idea how to deal with mm com... 阅读全文
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There is a tree with nn nodes, each of which has a type of color represented by an integer, where the color of node ii is cici. The path betwe... 阅读全文
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On the way to the next secret treasure hiding place, the mathematician discovered a cave unknown to the map. The mathematician entered the cav... 阅读全文
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Background To The Moon is a independent game released in November 2011, it is a role-playing adventure game powered by RPG Maker. The premis... 阅读全文
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Mr. Frog has an integer sequence of length n, which can be denoted as a1,a2,⋯,ana1,a2,⋯,anThere are m queries. In the i-th query, you are given two in... 阅读全文