ios对cin的加速欺骗了我,md数据量稍微大一点就TLE了,不太靠谱,搞一波bbb群主的快读板子,用于对付卡常用,虽然一般感觉用不到叭,sacnf够用了,但搞上一波没啥坏处 using namespace std; typedef long long ll; #define repi(i,b,e) for (int i = (b), _ = (e); i < _; ++i) #define rep(i,b,e) for (int i = (b), _ = (e); i = _; --i) #define repit(t,i,c) for (t i = (c).begin(); i !