import sequtils,strutils,math,algorithm

type
    yuusha = tuple[maxhp, hp : int] 

var
    N = stdin.readline.parseInt
    A = stdin.readline.split.map(parseInt)
    hp = 100
    maxhp = 100
    dp : array[1 shl 16, yuusha]
    
A.sort(system.cmp)
dp[0] = (100,100)
for i in 0..<(1 shl N):
    if dp[i].hp <= 0:
        continue
    for k in 0..<N:
        if (i and (1 shl k)) == 0:
            var p = (i + (1 shl k))
            if A[k] < 0:
                dp[p].hp = max(dp[i].hp + A[k], dp[p].hp)
                dp[p].maxhp = dp[i].maxhp + 100
            else:
                dp[p].maxhp = dp[i].maxhp
                dp[p].hp = min(max(dp[i].hp + A[k], dp[p].hp), dp[i].maxhp)
echo dp[(1 shl N) - 1].hp