Experience Gaining

import java.util.Scanner;

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

        double neededExp = Double.parseDouble(scanner.nextLine());
        int battleCount = Integer.parseInt(scanner.nextLine());
        double currentExp = 0;
        boolean isDone = false;
        int counter = 0;

        for (int i = 1; i <= battleCount; i++) {
            double experience = Double.parseDouble(scanner.nextLine());
            counter++;
            if (i % 3 == 0) {
                currentExp += experience * 1.15;
            } else if (i % 5 == 0) {
                currentExp += experience * 0.9;
            } else {
                currentExp += experience;
            }

            if (currentExp >= neededExp) {
                isDone = true;
                break;
            }
        }

        if (isDone) {
            System.out.println(String.format("Player successfully collected his needed experience for %d battles."
                    , counter));
        } else {
            System.out.println(String.format("Player was not able to collect the needed experience, %.2f more needed."
                    , neededExp - currentExp));
        }
    }
}