N, K = map(int, input().split())
A = list(map(int, input().split()))

ans = 0
lst = [-1]


def dfs(lst):
    global ans
    if len(lst) == K + 1:
        # print(lst[1:])
        S = 0
        for x in lst[1:]:
            S += A[x]
        if S % 998244353 <= S % 998:
            ans += 1
    else:
        for i in range(lst[-1] + 1, N):
            lst.append(i)
            dfs(lst)
            lst.pop()


dfs(lst)
print(ans % 998)