Energy Loss

import java.text.DecimalFormat;
import java.util.Scanner;

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

        int days = Integer.parseInt(scanner.nextLine());
        int dancers = Integer.parseInt(scanner.nextLine());

        int sumEnergy = 0;

        for (int i = 1; i <= days; i++) {
            int hours = Integer.parseInt(scanner.nextLine());

            if(hours % 2 == 0 && i % 2 == 0){
                sumEnergy += dancers * 68;
            }else if(hours % 2 == 0 && i % 2 != 0){
                sumEnergy += dancers * 49;
            }else if(hours % 2 != 0 && i % 2 == 0){
                sumEnergy += dancers * 65;
            }else if(hours % 2 != 0 && i % 2 != 0){
                sumEnergy += dancers * 30;
            }
        }

        double totalEnergy = 100 * dancers * days;

        double energyLeft = totalEnergy - sumEnergy;

        double dancerEnergy = (double)(energyLeft / days / dancers);

        if(dancerEnergy <= 50){
            System.out.printf("They are wasted! Energy left: %.2f", dancerEnergy);
        }else{
            System.out.printf("They feel good! Energy left: %.2f", dancerEnergy);
        }
    }
}