from itertools import combinations


N, K = map(int, input().split())
A = list(map(int, input().split()))
m1 = 998
m2 = 998_244_353
ans = 0
for comb in combinations(A, K):
    sc = sum(comb)
    if sc % m1 >= sc % m2:
        ans += 1
print(ans % m1)