import sys
input = sys.stdin.readline
N, Q = map(int, input().split())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
mod = 998244353
dp = [0] * (N + 1)
dp[1] = 1
dp[0] = a[0] - 1
#print(dp)
for i in range(1, N):
  for j in range(N, -1, -1):
    if dp[j] == 0: continue
    dp[j + 1] += dp[j]
    dp[j + 1] %= mod
    dp[j] += dp[j] * (a[i] - 2)
    dp[j] %= mod
for x in b: print(dp[x])