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Description You are given an array a consisting of n integers. In one move you can choose any aiai and divide it by 2 rounding down (in other words, i 阅读全文
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Description Heard that eom is a fishing MASTER, you want to acknowledge him as your mentor. As everybody knows, if you want to be a MASTER's apprentic 阅读全文
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Description You have a directed weighted graph with n vertexes and m edges. The value of a path is the sum of the weight of the edges you passed. Note 阅读全文
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Description You are given a string S consisting of only lowercase english letters and some queries. For each query (l,r,k), please output the starting 阅读全文
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Description You are given an array a1,a2,...,an(∀i∈[1,n],1≤ai≤n). Initially, each element of the array is unique . Moreover, there are m instructions. 阅读全文