import time
import itertools
import collections
from functools import reduce
from functools import wraps
from collections import defaultdict
# import pdb; pdb.set_trace()
from operator import add

#def fn(*args, **kwargs):
# @profile
def fn():
    m, n = (int(i) for i in input().split())
    a = [int(input()) for _ in range(n)]

    ans_lst = []
    for i, _ in enumerate(a, 1):
        for perm in itertools.permutations(a, r=i):
            enum = reduce(lambda x, y: x + y, perm)
            ans_lst.append(enum)
    ans = max(list(filter(lambda x: n >= x, ans_lst)))
    print(ans)
    #return ans

if __name__ == "__main__": fn()