MOD = 998244353

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

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

for i in range(q):
  print(dp[-1][b[i]])