import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("Enter days");
        int countOfDays = in.nextInt();
        System.out.println("Enter percent");
        double percent = in.nextDouble();
        percent = percent / 100;
        System.out.println("Enter sum");
        double sum = in.nextDouble();

        for (int i = 0; i < countOfDays; i++) {
            sum += 3;
            sum = sum - (sum * percent);
        }

        System.out.printf("After %d day you get %.2f", countOfDays, sum);
    }
}