1.Energy Loss

import java.util.Scanner;

public class ex04_EnergyLoss{
    public static void main (String[] args ) {
        Scanner scanner = new Scanner(System.in);

        int trainingDays = Integer.parseInt(scanner.nextLine());
        int numberOfDancers = Integer.parseInt(scanner.nextLine());
        double EnrgLoss = 0;

        for (int i=1;i<=trainingDays;i++){
            double hoursTraining = Double.parseDouble(scanner.nextLine());
            if (i % 2 ==0 && hoursTraining % 2 == 0){
                EnrgLoss = numberOfDancers * 68;
            }else if (i % 2 !=0 && hoursTraining % 2 == 0 ){
                EnrgLoss = numberOfDancers * 49;
            }else if (i % 2 ==0 && hoursTraining % 2 != 0 ){
                EnrgLoss = numberOfDancers * 65;
            }else if (i % 2 !=0 && hoursTraining % 2 != 0 ){
                EnrgLoss = numberOfDancers * 30;
            }
        }
        double AllDaysEnrg = 100 * trainingDays * numberOfDancers;
        double remainEnrgAllDays = AllDaysEnrg - EnrgLoss;
        double remainDancerEnrgPerDay = remainEnrgAllDays/trainingDays/numberOfDancers;
        if (EnrgLoss<=AllDaysEnrg/2){
            System.out.printf("They feel good! Energy left: %.2f",remainDancerEnrgPerDay);
        }else {
            System.out.printf("They are wasted! Energy left: %.2f" , remainDancerEnrgPerDay);
        }
}
}