include [HTML_REMOVED]
int main()
{
float a,s;
scanf(“%f”,&a);
if(a>=0&&a<=2000.00)
printf(“Isento”);
else if(a>=2000.01&&a<=3000.00)
printf(“R$ %.2f”,(a-2000)*0.08);
else if(a>=3000.01&&a<=4500.00)
printf(“R$ %.2f”,80+(a-3000)0.18);
else if(a>4500.00)
printf(“R$ %.2f”,350+(a-4500)0.28);
return 0;
}