摘要：求平方根下取整，对于gcc type __uint128_t。 ~45.5ns/op on i7 7700k@4.35G，即typical include include include typedef __uint128_t u128; typedef unsigned long long u64 阅读全文

摘要：LOJ 最大流加强版 cpp include const int inf=0x7fffffff; const int maxn=1210; const int maxh=1 out[maxn],act[maxn]; define count cnt struct nodelist{u16 l,r;} 阅读全文

摘要：```cpp /// A heavily optimized sieve include include include include typedef unsigned int u32; typedef unsigned long long ull; const char pr60[]={2,3, 阅读全文

摘要：```python import random import os import sys import re class _is: def __init__(self,reg): self.cr=re.compile(reg) def __call__(self,string): return self.cr.fullmatch(string)!=... 阅读全文