import sys
sys.setrecursionlimit(10**7)

#-------------------
def rec(per):
    global ans
    
    if len(per) == K:
        t1,t2 = 0,0
        for x in per:
            t1 += A[x]
            t1 %= m1
            t2 += A[x]
            t2 %= m2
        if t2 <= t1:
            ans += 1
            ans %= m1
            test.append([per,t1,t2])
        return
    
    lst = per[-1]
    if lst == N-1:
        return
    
    for nxt in range(lst+1, N, 1):
        per.append(nxt)
        rec(per[:])
        per.pop()

#-------------------
m1 = 998
m2 = 998244353

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

ans = 0
for i in range(N):
    P = [i]
    rec(P)

print(ans)