n, k = map(int, input().split())
A = list(map(int, input().split()))
mod = 998244353
from collections import defaultdict
dp = [defaultdict(lambda: 0) for i in range(k+1)]
dp[0][0] = 1
for i, a in enumerate(A):
    for j in range(i+1):
        for s, v in dp[j].items():
            if j+1 <= k and s^a == s+a:
                dp[j+1][s^a] +=v
                dp[j+1][s^a] %= mod
ans = 0
for s, v in dp[k].items():
    ans += v
    ans %= mod
print(ans)