qwq以下都为9.24后写的模板 namespace IO{ const int S = 1 << 20; char I[S + 1], *Is = I, *It = I, O[S + 1], *Ot = O; char gc() {return Is == It ? ((It = (Is = I) + fread(I, 1, S, stdin)) == I ? EOF: *Is++): *Is++;} void flush() {fwrite(O, 1, Ot - O, stdout), O…