代码如下：

#include <iostream>
#include <cstdio>
using namespace std;

int main(){
	int e_amount;
	double e_fee,fee_lev_1=150*0.4463,fee_lev_2=400*0.4663;
	scanf("%d",&e_amount);
	if(e_amount<=150)
		e_fee = e_amount*0.4463;
	else if(e_amount>=401)
		e_fee = fee_lev_1+fee_lev_2+(e_amount-400)*0.5663;
	else 
		e_fee = fee_lev_1+(e_amount-150)*0.4663;
		
	printf("%.1f",e_fee);
	return 0;
	
}