数组要开定值，不能写成
```cpp
int arr[n + 1] = {0};
```
by Didncan_yu @ 2023-10-27 17:20:17
@[Didncan_yu](/user/719289)
dev c++可以，不能写动态数组是MSVC的问题，而且按你说的应该是RE但我是WA
by cmd137 @ 2023-10-27 17:52:49