摘要:
一些前置内容 Min-Max 容斥 \[\max_{x \in S}x = \sum_{T \subseteq S}(-1)^{T - 1}\min_{x \in T}x \]\[\min_{x \in S}x = \sum_{T \subseteq S}(-1)^{T - 1}\max_{x \i 阅读全文
摘要:
1. 源码 typedef long long i64; typedef unsigned long long u64; typedef __int128 i128; const i128 o = 1; template < i64 mod, i64 invpow = mod - 2 > struc 阅读全文