找一下ub？
by FZzzz @ 2020-03-05 22:06:41
@[function_of_zero](/user/174045) 真萌新：ub是啥
by 7KByte @ 2020-03-05 22:07:12
假萌新
by George1123 @ 2020-03-05 22:08:23
@[Inf_Voltage](/user/119261) undefined behavior，比如数组越界自然溢出之类
by FZzzz @ 2020-03-05 22:08:51
@[Inf_Voltage](/user/119261) 多半越界了，我当时做这道题目也越界了...
by Polaris_Dane @ 2020-03-05 22:11:05
@[Polaris_Dane](/user/78290) @[function_of_zero](/user/174045)
不对啊我数组开$10^7$还是``RE``啊
by 7KByte @ 2020-03-05 22:15:39
@[Inf_Voltage](/user/119261) [here](https://www.luogu.com.cn/ide)
by Smile_Cindy @ 2020-03-05 22:22:24