求帮助

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
  int a;
  cout>>a;
  cout<<setiosflags(ios::fixed)<<setprecision(1);
  if(a<=150)cout<<a*0.4463<<endl;
  else if(a<=400)cout(a-150)*0.4663+150*0.4463<<endl;
   else cout<<(a-400)*0.5663+250*0.4663+150*0.4463<<endl;
  return 0;
}