[ጿ ኈ ቼ ዽ ጿ ኈ ጿ ኈ ቼ ዽ ጿ ኈ ጿ ኈ ቼ ዽ ጿ ኈ] [已死勿扰] [简易火车头]{ #pragma GCC diagnostic error "-std=c++11" #pragma GCC target("avx") #pragma GCC optimize(2) #pragma GCC optimize(3,"Ofast","inline") }