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

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

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