N = int(input())

M = [int(input()) for i in range(N)]

DP = [10 ** 9] * 2 ** N
X = [0] * 2 ** N

DP[0] = 0

from itertools import combinations

for i in range(1, N + 1):
    
    for C in combinations(range(N), r=i):
        
        x = sum([2 ** c for c in C])
        X[x] = X[x - 2 ** C[0]] + M[C[0]]
        
        DP[x] = min([DP[x - 2 ** c] + max(0, M[c] - X[x - 2 ** c] % 1000) for c in C])
print(DP[-1])