Black Flag

import java.util.Scanner;

public class BlackFlag {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int days = Integer.parseInt(scanner.nextLine());
        int dailyPlunder = Integer.parseInt(scanner.nextLine());
        double expectedPlunder = Double.parseDouble(scanner.nextLine());

        double finalGain = 0;
        int currentDay = 0;
        for (int i = 0; i < days; i++) {
            currentDay++;
            finalGain += dailyPlunder;
            if (currentDay % 3 == 0) {
                finalGain += dailyPlunder * 0.5;
            }
            if (currentDay % 5 == 0) {
                finalGain *= 0.70;
            }
        }
        if (finalGain >= expectedPlunder) {
            System.out.printf("Ahoy! %.2f plunder gained.", finalGain);
        } else {
            System.out.printf("Collected only %.2f%% of the plunder.", finalGain / expectedPlunder * 100);
        }
    }
}