N, Q = map(int, input().split())
A = tuple(map(int, input().split()))
B = tuple(map(int, input().split()))
MOD = 998244353

dp = [0] * (N + 2)
dp[1] = 1
for i, a in enumerate(A):
    new_dp = [0] * (N + 2)
    for j in range(1, N + 2):
        new_dp[j] += dp[j] * (a - 1) + dp[j - 1]
        new_dp[j] %= MOD
    dp = new_dp

for b in B:
    print(dp[b + 1])