from functools import reduce

n,k = [int(x) for x in input().split()]
xs = [int(input()) for _ in range(n)]

ans = 0
for b in range(0,1<<n):
    s = reduce(lambda iv, x: (iv[0]+1, iv[1]+(x if b>>iv[0]&1 else 0)), xs, (0,0))
    if s[1] <= k: ans = max(ans, s[1])
print(ans)