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

itemsum = 0

# 全探索でやったらTLEになった。

def choose_rec(arr, K, N):
    global itemsum
    if (len(arr) == K):
        yield 0
    if (len(arr) == 0):
        s = 1
    else:
        s = arr[-1] + 1    
    for i in range(s, N+1):
        arr.append(i)
        itemsum += A[i-1]
        yield from choose_rec(arr, K, N)
        itemsum -= A[i-1]
        arr.pop()
    return

ans = 0
for order in choose_rec([], K, N):
    S998 = itemsum % 998
    S998244353 = itemsum % 998244353
    if (S998244353 <= S998):
        ans += 1
print(ans % 998)