未定义行为
具体是先算++ans[0]呢还是先算ans[ans[0]-1]/10呢?编译器提出疑问并向你丢了个WA
by The_BJX @ 2021-10-05 08:35:58
```cpp
ans[++ans[0]]=ans[ans[0]-1]/10;
```
正确性取决于编译器
如果编译器先处理等号右边 结果就是错的
by Liuxizai @ 2021-10-05 08:36:37
谢啦
by zimer @ 2021-10-05 08:40:10