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Oh, The article just records my code in Latex. Basic \documentclass{article} \title{My first document} \date{2022/9/15} \author{Jack Lee} \begin{docum 阅读全文
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创建线段树O(n) 原数据的大小为N(例如维护区间合时,原数组总数N),则线段树要开4 * N int n, w[N]; struct node{ int l, r, sum; }tr[N * 4]; void build(int p, int l, int r){ tr[p] = {l, r, w 阅读全文
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Hw-09 Security and Cryptography 1. Entropy Suppose a password is chosen as a concatenation of four lower-case dictionary words, where each word is sel 阅读全文
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Security and Cryptography Foreward It should be kown that this lecture is not a substitute for a more rigorous and complete course one computer system 阅读全文