import itertools
import math
def comb(n,r):
    return math.factorial(n)//(math.factorial(n-r) * math.factorial(r))

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

lis = [i for i in range(N)]
result = [0 for _ in range(comb(N,K))]
ct = 0
for conb in itertools.combinations(lis, K):
    # result.append(list(conb)) #タプルをリスト型に変換
    for j in range(K):
        result[ct] += A[list(conb)[j]]
    ct += 1

ans = 0
for k in range(len(result)):
    if result[k]%998244353 <= result[k]%998:
        ans += 1

print(ans%998)