Professor Dumbledore is helping Harry destroy the Horcruxes. He went to Gaunt Shack as he suspected a Horcrux to be present there. He saw Marvolo Gaunt's Ring and identified it as a Horcrux. Although he destroyed it, he is still affected by its curse. Professor Snape is helping Dumbledore remove the curse. For this, he wants to give Dumbledore exactly x drops of the potion he made. 

Value of x is calculated as maximum of p·ai + q·aj + r·ak for given p, q, r and array a1, a2, ... an such that 1 ≤ i ≤ j ≤ k ≤ n. Help Snape find the value of x. Do note that the value of x may be negative.

Input

First line of input contains 4 integers n, p, q, r ( - 109 ≤ p, q, r ≤ 109, 1 ≤ n ≤ 105).

Next line of input contains n space separated integers a1, a2, ... an ( - 109 ≤ ai ≤ 109).

Output

Output a single integer the maximum value of p·ai + q·aj + r·ak that can be obtained provided 1 ≤ i ≤ j ≤ k ≤ n.

Examples

Input

5 1 2 3
1 2 3 4 5


Output

30


Input

5 1 2 -3
-1 -2 -3 -4 -5


Output

12

Note

In the first sample case, we can take i = j = k = 5, thus making the answer as 1·5 + 2·5 + 3·5 = 30.

In second sample case, selecting i = j = 1 and k = 5 gives the answer 12.
import sys
from math import *
sys.setrecursionlimit(3000000)
                                 
#sys.stdin = open ('file.in', 'r')
#sys.stdout = open ('file.out', 'w')    

n, p, q, r = map (int, sys.stdin.readline ().split ())

inf = 10 ** 40

dp = [-inf] * 100005
for i in range (100005) :
	dp[i] = [-inf] * 4

dp[0][0] = 0

mas = list (map (int, sys.stdin.readline ().split ()))

for i in range (n) :                                
	dp[i][1] = max (dp[i][1], dp[i][0] + mas[i] * p)
	dp[i][2] = max (dp[i][2], dp[i][1] + mas[i] * q)
	dp[i][3] = max (dp[i][3], dp[i][2] + mas[i] * r)
	for j in range (4) :
		dp[i + 1][j] = max (dp[i + 1][j], dp[i][j])

print (dp[n][3])