import java.util.*;
import java.io.*;

class GFG 
{ 
    static int maxProfit(int price[], int start, int end)
    {
    	if(end <= start)
    		return 0;

    	int profit = 0;

    	for(int i = start; i < end; i++)
    	{
    		for(int j = i + 1; j <= end; j++)
    		{
    			if(price[j] > price[i])
    			{
    				int curr_profit = price[j] - price[i] 
    								  + maxProfit(price, start, i - 1)
    								  + maxProfit(price, j + 1, end);

    				profit = Math.max(profit, curr_profit);
    			}
    		}
    	}

    	return profit;
    }

    public static void main(String args[]) 
    { 
       int arr[] = {1, 5, 3, 8, 12}, n = 5;

       System.out.println(maxProfit(arr, 0, n-1));
    } 
}