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C2. XOR-convenience (Hard Version) This is the hard version of the problem. The difference between the versions is that in this version, $1 \le i \le 阅读全文
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E - Cookies Problem Statement There are $10^{100}$ cookies of each of $N$ types. The deliciousness per cookie of the $i$-th type is $A_i$. You will ch 阅读全文
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D. Interval Cubing While learning Computational Geometry, Tiny is simultaneously learning a useful data structure called segment tree or interval tree 阅读全文
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H. Blackslex and Plants Blackslex has found solace in plants and trees amidst accumulated stress from strained relationships, stressful politics, and 阅读全文
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F - Manhattan Christmas Tree 2 Problem Statement There are $N$ Christmas trees on a two-dimensional plane. The $i$-th $(1\le i\le N)$ Christmas tree i 阅读全文
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D. Fibonacci Paths You are given a directed graph consisting of $n$ vertices and $m$ edges. Each vertex $v$ corresponds to a positive number $a_v$. Co 阅读全文