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Not Found You are given a string S consisting of lowercase English letters. Find the lexicographically (alphabetically) smallest lowercase English let 阅读全文
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HEX HEX: In programming, hexadecimal notation is often used.In hexadecimal notation, besides the ten digits 0,1,…,9, the six letters A, B, C, D, E and 阅读全文
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Cat Snuke and a Voyage 题目描述 In Takahashi Kingdom, there is an archipelago of N islands, called Takahashi Islands. For convenience, we will call them I 阅读全文