N, Q = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

dp = [0] * (N + 1)
dp[1] = 1
dp[0] = A[0] - 1
for i in range(1, N):
    for j in range(i, -1, -1):
        dp[j + 1] += dp[i]
        dp[j + 1] %= 998244353
        dp[j] *= A[i] - 1
        dp[j] %= 998244353

print('\n'.join(str(dp[b]) for b in B))