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题目描述 A wireless sensor network consists of autonomous sensors scattered in an environment where they monitor conditions such as temperature, sound, an 阅读全文
posted @ 2023-09-17 21:46
灰鲭鲨
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题目描述 This is the hard version of this problem. The only difference is the limit of $ n $ - the length of the input string. In this version, $ 1 \leq n 阅读全文
posted @ 2023-09-17 21:07
灰鲭鲨
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定义: \(\binom{n}{m}=\frac{n!}{m!(n-m)!}\) 拆开后常用多项式科技优化 杨辉三角: \(\binom{n}{m}=\binom{n-1}{m}+\binom{n-1}{m-1}\) 常用于求复杂组合数式子的递推式。 上指标求和： \(\sum\limits_{i= 阅读全文
posted @ 2023-09-17 18:41
灰鲭鲨
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