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CF1252J Tiling Terrace "洛谷评测传送门" 题目描述 Talia has just bought an abandoned house in the outskirt of Jakarta. The house has a nice and long yard which ca 阅读全文
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CF843D Dynamic Shortest Path "洛谷评测传送门" 题目描述 You are given a weighted directed graph, consisting of n n vertices and m m edges. You should answer q q q 阅读全文
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CF463D Gargari and Permutations "洛谷评测传送门" 题目描述 Gargari got bored to play with the bishops and now, after solving the problem about them, he is trying 阅读全文
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CF812C Sagheer and Nubian Market "洛谷评测传送门" 题目描述 On his trip to Luxor and Aswan, Sagheer went to a Nubian market to buy some souvenirs for his friends 阅读全文
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CF9D How many trees? "洛谷传送门" 题目描述 In one very old text file there was written Great Wisdom. This Wisdom was so Great that nobody could decipher it, ev 阅读全文
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CF293B Distinct Paths "洛谷评测传送门" 题目描述 You have a rectangular n×m n × m cell board. Some cells are already painted some of k k colors. You need to paint 阅读全文