公司提成

#include<stdio.h>
int main()
{
 float salary=500;
 int grade;
 long profit;
 while(scanf("%ld",&profit))
 {
  grade=(profit-1)/1000;
  switch (grade)
  {
   case 0:break;
   case 1:salary+=profit*0.1;break;
   case 2:
   case 3:
   case 4:salary+=profit*1.5;break;
   case 5:
   case 6:
   case 7:
   case 8:
   case 9:salary+=profit*0.2;break;
   default:salary+=profit*0.25;
  }
  printf("%.2f\n",salary);
 }
 return 0;
}