Workout

import java.util.Scanner;

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

        int days = Integer.parseInt(scanner.nextLine());
        double kmFirstDay = Double.parseDouble(scanner.nextLine());
        double kmRun = 0;
        double kmRunDay = kmFirstDay;
        double difference = 0;
        double total = 0;

        for (int i = 0; i < days; i++) {
            double percent = Double.parseDouble(scanner.nextLine());
            kmRunDay += percent / 100 * kmRunDay;
            kmRun +=kmRunDay;

        }
        total = kmFirstDay + kmRun;

        difference = (Math.abs(total - 1000));

        if (total >= 1000) {
            System.out.printf("You've done a great job running %.0f more kilometers!", Math.ceil(difference));
        } else {
            System.out.printf("Sorry Mrs. Ivanova, you need to run %.0f more kilometers", Math.ceil(difference));
        }


    }
}