MarcsCakewalk.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

public class MarcsCakewalk {

    // Complete the marcsCakewalk function below.
    static long marcsCakewalk(int[] calorie) {
      Arrays.sort(calorie);
      long min = 0 , j = 0;
      for(int i=calorie.length-1;i>=0;i--){
         min += (Math.pow(2,j) * calorie[i]);
         j++;
       }

      return min;
       
         
    }

    private static final Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) throws IOException {
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        int n = scanner.nextInt();
        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

        int[] calorie = new int[n];

        String[] calorieItems = scanner.nextLine().split(" ");
        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

        for (int i = 0; i < n; i++) {
            int calorieItem = Integer.parseInt(calorieItems[i]);
            calorie[i] = calorieItem;
        }

        long result = marcsCakewalk(calorie);

        bufferedWriter.write(String.valueOf(result));
        bufferedWriter.newLine();

        bufferedWriter.close();

        scanner.close();
    }
}