mod = 998244353
n,q = map(int,input().split())
a = [int(i) for i in input().split()]
b = [int(i) for i in input().split()]

dp = [[0]*(n+1) for i in range(n+1)]
dp[0][0] = 1

for i in range(n):
    for j in range(n+1):
        if j >= 1:
            dp[i+1][j] = dp[i][j]*(a[i]-1)%mod + dp[i][j-1]%mod
        else:
            dp[i+1][j] = dp[i][j]*(a[i]-1)%mod
        dp[i+1][j] %= mod

for i in range(q):
    print(dp[n][b[i]])
#print(dp[n])