MOD = 998244353

n, q = map(int, input().split())
a = list(map(int, input().split()))
b = list(map(int, input().split()))

dp = [(a[0] - 1) % MOD, 1, 0]
for i in range(1, n):
	ndp = [0 for _ in range(i + 3)]
	ndp[0] = (dp[0] * (a[i] - 1)) % MOD
	for j in range(1, i + 2):
		ndp[j] = (dp[j] * (a[i] - 1) + dp[j - 1]) % MOD
	dp = ndp

for i in range(q):
  print(dp[b[i]])