import numpy as np

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

dp = np.zeros(N + 2, dtype=np.int64)
dp[1] = 1
for i, a in enumerate(A):
    new_dp = np.zeros_like(dp)
    new_dp[1:] = dp[1:] * (a - 1) + dp[:-1]
    new_dp %= MOD
    dp = new_dp

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