-- https://github.com/minoki/my-atcoder-solutions
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE Strict #-}
import Data.Char (isSpace)
import Data.Int (Int64)
-- import Data.List
import Data.Array.Unboxed
import Data.Array.ST
import Control.Monad
import qualified Data.Vector.Unboxed as U
import qualified Data.Vector.Unboxed.Mutable as UM
import qualified Data.ByteString.Char8 as BS
import Data.Bits

main = do
  n <- readLn @Int
  xs <- U.unfoldrN n (BS.readInt . BS.dropWhile isSpace) <$> BS.getLine
  let arr :: UArray (Int,Int) Int64
      arr = runSTUArray do
        a <- newArray ((0,0),(n-1,n-1)) 0
        forM_ [0..n-1] \i -> do
          forM_ [0..n-1] \j -> do
            writeArray a (i,j) $! fromIntegral (xs U.! i) * fromIntegral (abs (i - j))
        return a
      v :: U.Vector Int64
      v = U.create do
        v <- UM.replicate (2^n) 0
        forM_ [0..n-1] \i -> do
          UM.write v (bit i) (arr ! (0,i))
        let f i = do
              a <- UM.read v i
              if a > 0
                then return a
                else do
                let loop m 0 = pure m
                    loop m k = do
                      let l = countTrailingZeros k
                          k' = clearBit i l
                          b = arr ! (popCount i - 1, l)
                      u <- f k'
                      loop (max m (b + u)) (clearBit k l)
                m <- loop 0 i
                UM.write v i m
                return m
        f (2^n-1)
        return v
  print $ U.last v
