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Problem StatementYou are given a simple undirected graph with $N$ vertices and $M$ edges. The vertices are numbered $1, \dots, N$, and the $i$-th $(1 阅读全文
posted @ 2022-09-10 11:44
灰鲭鲨
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Problem StatementYou are given a sequence $a = (a_1, \dots, a_N)$ of length $N$ consisting of integers between $1$ and $N$. Find the number of pairs o 阅读全文
posted @ 2022-09-10 11:05
灰鲭鲨
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Problem StatementYou are given a sequence of positive integers $A=(a_1,\ldots,a_N)$ of length $N$. There are $(2^N-1)$ ways to choose one or more term 阅读全文
posted @ 2022-09-10 09:38
灰鲭鲨
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