有UB
by 良心WA题人 @ 2022-07-13 11:00:20
`-Wall` 解决大多数问题
`-Wextra` 解决 $99\%$ 问题
`-fsanitize=undefined,address` 解决所有问题
by fjy666 @ 2022-07-13 11:02:07
@[fjy666](/user/366338) 所以luogu自带
```
fsanitize=undefined,address
```
吗![](//图.tk/0)
by WRuperD @ 2022-07-13 11:08:59
@[God_Panda](/user/247388) 洛谷没有捏![](//图.tk/0)不过CF有
by fjy666 @ 2022-07-13 11:10:09
@[fjy666](/user/366338) ![](//图.tk/1)
thx
by WRuperD @ 2022-07-13 11:10:45