摘要:
https://www.lydsy.com/JudgeOnline/problem.php?id=3295 把删除看成反向插入,把时间看成一维,下标看成一维,值看成一维,就变成了三维偏序问题了,需要正着扫一遍和反着扫一遍 阅读全文
摘要:
``` struct FastIO { static const int S = 1e7; int wpos; char wbuf[S]; FastIO() : wpos(0) {} inline int xchar() { static char buf[S]; static int len = 阅读全文