from itertools import combinations


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

"""
考察

全探索でも 28C8 = 3108105 通りで間に合いそう
"""
ans = 0
for comb in combinations(A, K):
    s998 = 0
    for a in comb:
        s998 += a
        s998 %= 998
    s998244353 = 0
    for a in comb:
        s998244353 += a
        s998244353 %= 998244353
    ans += s998244353 <= s998
    ans %= 998
print(ans)