Account

import java.util.Scanner;

public class Balance {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int numberIncome = Integer.parseInt(scanner.nextLine());
        double account = 0;

        while (numberIncome-- > 0) {
            double money = Double.parseDouble(scanner.nextLine());

            if (money >= 0) {
                account += money;
                System.out.printf("Increase: %.2f%n", money);

            } else {
                System.out.println("Invalid operation!");
                break;
            }
        }
        System.out.printf("Total: %.2f", account);

    }
}