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记忆化 WA的暴力 阅读全文
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```cpp include "Head.cpp" const int N = 307; int f[N][N], a[N], b[N], sumA[N], sumB[N]; int main(){ FileOpen(); int n, M; io M n; R(i,2,n + 1){ io a[i 阅读全文
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逆序建超级源快十倍还行 阅读全文
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$if \ a b include include include include define R(a,b,c) for(register int a = (b); (a) = (c); (a)) define Fill(a,b) memset(a, b, sizeof(a)) define Ma 阅读全文
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Aug 18th 飞机晚点,错过互相介绍时间。与同行者热(gan)情(ga)寒暄。旅馆气派于外,房里连个大灯都没有。。。 Aug 19th 上午逛学校,物理教授拿着瓶酱油一脸欢欣地吹复旦nb。 下午讲诗歌翻译与材料学。本以为听语文会💤,但王教授太可爱了啦,结束后我厚颜无耻地去要ppt,交流了一会儿 阅读全文
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预处理,树上差分。注意深度减一 阅读全文
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```cpp include include include include include define R(a,b,c) for(register int a = (b); (a) = (c); (a)) define Fill(a,b) memset(a, b, sizeof(a)) defi 阅读全文