yin间加速卡常大法

不知道来源是哪，侵删

#pragma comment(linker, "/stack:200000000") #pragma GCC optimize("Ofast,no-stack-protector") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #pragma GCC optimize("unroll-loops")