import itertools 
N, M = map(int,input().split())
Set_N = [int(input()) for _ in range(N)]
subset = []
set_2 = []
not_candidates = []
set_length = []
if len(Set_N) == 1:
  print(1)
else:
  for i in range(1,N+1):
    for j in itertools.combinations(Set_N,i):
      subset.append(list(j))
  for i in subset:
    if len(i) == 1:
      pass
    else:
      for pair in itertools.combinations(i,2):
        for k in range(1,len(Set_N)+1):
          if M >= sum(pair):
            if M % sum(pair) != 0:
              set_2.append(i)
          elif M < sum(pair):
            if sum(pair) % M != 0:
              set_2.append(i)
          if len(i) == k and (M % sum(pair) == 0 or sum(pair) % M == 0):
            not_candidates.append(i)
  for i in set_2:
    if i not in not_candidates:
      set_length.append(len(i))
print(max(set_length))