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#include<bits/stdc++.h> // #include<iostream> // #include<stdio.h> // #include<iomanip> // #include<stack> // #include<queue> // #include<algorithm> / 阅读全文
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一、给定URL， 提取小说文本 import re import requests from bs4 import BeautifulSoup if __name__ == '__main__': response = requests.get('http://www.jinyongwang.com 阅读全文
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一、给定url，直接下载到本地 import re import requests from bs4 import BeautifulSoup def get_gif(url, a): response = requests.get(url) # 自己电脑上的文件夹路径，默认命名 a.gif wit 阅读全文
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CF1秒跑8e9的秘密武器 #pragma GCC optimize("Ofast,unroll-loops")#pragma GCC target("avx,avx2,sse,sse2") 阅读全文
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参考链接：https://blog.csdn.net/qq_43472263/article/details/104150940 U41492 树上数颜色 https://www.luogu.com.cn/problem/U41492 求子树的颜色数有多少种 /* U41492 树上数颜色 计算v的 阅读全文
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A - 数列分块入门 1 LibreOJ - 6277 分块模板题：lazy[i] 表示第i块整体的更新量 单点询问：res = a[x] + lazy[belong[x]] #include<map> #include<set> #include<cmath> #include<deque> #i 阅读全文
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Princess CJB has lived almost her entire life in the isolated town of Ertona, where CJB uses her unique ability to recognize where crystals of materia 阅读全文
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BaoBao is a good student who loves reading, but compared with his huge bookshelf containing lots and lots of books, his reading desk, which can only h 阅读全文
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https://lpc.ucfprogrammingteam.org/localFiles/local2019Problems.pdf（G题） 万物皆可网络流，冲冲冲 #include<map> #include<set> #include<cmath> #include<deque> #inclu 阅读全文
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狄利克雷卷积 定义 设f,g为两个数论函数. 定义卷积运算(f×g)(n)=∑d|n[f(d)∗g(n/d)] 运算律 交换律:f×g=g×f 结合律:(f×g)×h=f×(g×h) 存在单位元ι使得f=ι×f 根据定义. (ι×f)(n)=∑d|nι(d)∗f(nd)=f(n) 所以可知. l(n 阅读全文
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There is a legendary tale about Dragon Balls on Planet X: if one collects seven Dragon Balls, the Dragon God will show up and help you fulfill your wi 阅读全文