第21行“（a-150）”应该改为250
因为a-150 包含了400以上的部分
by kongyuhen @ 2022-08-24 14:48:41
```cpp
#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
long a;
cin>>a;
float b;
if(a<=150)
{
cout<<fixed<<setprecision(1)<<a*0.4463;
return 0;
}
else if(a<=400)
{
cout<<fixed<<setprecision(1)<<150*0.4463+(a-150)*0.4663;
return 0;
}
else
{
//cout<<fixed<<setprecision(1)<<150*0.4463+(a-150)*0.4663+(a-400)*0.5663;
cout<<fixed<<setprecision(1)<<150*0.4463+250*0.4663+(a-400)*0.5663;
return 0;
}
}
```
@[cppdyh](/user/754429)
by six_小6猪 @ 2022-08-24 14:50:57
我给你测了一下，在最后一步出了问题
a-150中的一部分有可能包含在a-400
这里可能需要优化
by mxpf @ 2022-08-24 14:53:46
@[six_小6猪](/user/191993)
```cpp
#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
long a;
cin>>a;
float b;
if(a<=150)
{
cout<<fixed<<setprecision(1)<<a*0.4463;
return 0;
}
else if(a<=400)
{
//cout<<fixed<<setprecision(1)<<150*0.4463+(a-150)*0.4663;
cout<<fixed<<setprecision(1)<<150*0.4463+(a-250)*0.4663;
return 0;
}
else
{
//cout<<fixed<<setprecision(1)<<150*0.4463+(a-150)*0.4663+(a-400)*0.5663;
cout<<fixed<<setprecision(1)<<150*0.4463+250*0.4663+(a-400)*0.5663;
return 0;
}
}
by spx123bc @ 2022-08-24 15:03:30
@[spx123bc](/user/667064)
?
by six_小6猪 @ 2022-08-24 15:17:08
3Q4 answers
~~谢谢回答~~
by cppdyh @ 2022-08-24 16:04:23
by cppdyh @ 2022-08-24 19:02:54
```cpp
#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
long a;
cin>>a;
float b;
if(a<=150)
{
cout<<fixed<<setprecision(1)<<a*0.4463;
return 0;
}
else if(a<=400)
{
cout<<fixed<<setprecision(1)<<150*0.4463+(a-150)*0.4663;
return 0;
}
else
{
cout<<fixed<<setprecision(1)<<150*0.4463+250*0.4663+(a-400)*0.5663;
return 0;
}
}
```
AC
by cppdyh @ 2022-08-24 19:04:42