#include<stdio.h>
int main()
{
    int quantity;
    scanf("%d",&quantity);
    if(quantity < 0)
    {
        printf("Invalid input");
        return 0;
    }
    float price = 100.0;
    float toatl = quantity * price;
    float discount = 0.0;
    if(quantity >= 1 && quantity <= 5)
    {
        discount = 0.10 * total;
    }
    else if(quantity >=6 && quantity <= 10)
    {
        discount = 0.15 * total;
    }
    float finalamount = total - discount;
    printf("%.2f",finalamount);
    return 0;
}