from itertools import combinations

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

ans = 0

for sel_pattern in combinations(range(N), K):
    S998 = 0
    Slarge = 0
    for i in sel_pattern:
        S998 += (A[i] % 998)
        S998 %= 998
        
        Slarge += (A[i] % 998244353)
        Slarge %= 998244353
        
    if Slarge <= S998:
        ans += 1

print(ans % 998)