Парична награда

import java.util.Scanner;

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

       int parts = Integer.parseInt(scanner.nextLine());
       double points = Double.parseDouble(scanner.nextLine());

       double sum = 0;

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

            if(i % 2 == 0){
                sum += currentNum * 2;
            }else{
                sum += currentNum;
            }
        }

        double result = sum * points;

        System.out.printf("The project prize was %.2f lv.", result);
    }
}