@[Etic_HAO](/user/735935) 细节问题。
```ans=150*0.4463+(400-150)*0.4633+(a-400)*0.5663; ```
0.4633 应为 0.4663
by xutongwei @ 2022-07-26 14:08:59
@[xutongwei](/user/223588)
O(∩_∩)O谢谢
by Etic_HAO @ 2022-07-26 14:11:54