@[Rmghcz](/user/1021737)
```cpp
sum=150*0.4463+400*0.4663+(i-400)*0.5663;
```
这行代码写错了哦，应该写为
```cpp
sum=150*0.4463+250*0.4663+(i-400)*0.5663;
```
因为他是151~400这个范围的电费是$0.4663$元，而你写成了$400$，应该是$400-150=250$[AC记录](https://www.luogu.com.cn/record/116674837)
by bk1212 @ 2023-07-20 22:49:09
@[Rmghcz](/user/1021737)
```cpp
400*0.4663
```
$400-150=400$ ?
by __LiChangChao__ @ 2023-07-20 22:52:35
@[bk1212](/user/583541) 好滴，谢谢！
by Rmghcz @ 2023-07-20 22:53:08
@changwenxuan不好意思，我太粗心了，当时没有考虑这个
by Rmghcz @ 2023-07-20 22:56:36