活用STL吧？
by Papaya @ 2018-06-16 20:55:32
N <= 1000000...
by zerolt @ 2018-06-16 21:03:17
@[HenryHuang](/space/show?uid=43957)
by zerolt @ 2018-06-16 21:03:48
好像还是错了。。
by HenryHuang @ 2018-06-17 17:17:36
@[zerolt](/space/show?uid=32945) 好像还是错了
by HenryHuang @ 2018-06-17 17:17:49