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F - Chmax Problem Statement You are given a positive integer $N$ and a permutation $P=(P_1,P_2,\ldots,P_N)$ of $(1,2,\ldots,N)$. There are variables $ 阅读全文
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Maximum Subarray Sum After at Most K Swaps You are given an integer array nums and an integer k. You are allowed to perform at most k swap operations 阅读全文
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G - Catch All Apples Problem Statement $N$ apples fall on a number line. Apple $i$ falls at coordinate $X_i$ at time $T_i$. You want to place some rob 阅读全文
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F. Subtree Minimum Query You are given a rooted tree consisting of $n$ vertices. Each vertex has a number written on it; number $a_i$ is written on ve 阅读全文
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F - Plan Holidays Problem Statement Takahashi is trying to decide his schedule for $N$ days. Initially, none of the days are holidays. He can repeat e 阅读全文
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C. Willem, Chtholly and Seniorious — Willem... — What's the matter? — It seems that there's something wrong with Seniorious... — I'll have a look... S 阅读全文