import itertools

N, K = map(int, input().split())
A = list(map(int, input().split()))
ans = 0
MOD1 = 998
MOD2 = 998244353

for i in itertools.combinations(A, K):
  cnt1 = 0
  cnt2 = 0
  for j in i:
    cnt1 += j
    cnt2 += j
    cnt1 %= MOD1
    cnt2 %= MOD2
  
  if cnt1 >= cnt2:
    ans += 1
    ans %= MOD1

print(ans)