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;

}