Rent

import java.util.Scanner;

public class Rent {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int months = Integer.parseInt(scanner.nextLine());
        int percent = Integer.parseInt(scanner.nextLine());
        double rentForMonth = Double.parseDouble(scanner.nextLine());
        double firstMonths = 0.0;
        double secondMonths = 0.0;
        if (months % 2 == 0) {
            firstMonths = (months / 2) * rentForMonth;
            secondMonths = ((months / 2) * rentForMonth) - (months / 2) * (rentForMonth * 0.2);
        } else  {
            firstMonths = (months / 2) * rentForMonth;
            secondMonths = (((months / 2) + 1) * rentForMonth) - ((months / 2) + 1) * (rentForMonth * 0.2);
        }
        double totalSum = firstMonths + secondMonths;
        double broker = totalSum * (percent * 1.0 / 100);
        double finalSum = totalSum + broker;
        System.out.printf("Total: %.2f", finalSum);
    }
}