MOD = 998244353
N,Q = map(int,input().split())
A = [0]+list(map(int,input().split()))
B = [0]+list(map(int,input().split()))
dp = [[0 for _ in range(N+1)] for _ in range(2)]
dp[1][0] = A[1]-1
dp[1][1] = 1
for i in range(2,N+1):
    dp[i%2][0] = (dp[(i-1)%2][0]*(A[i]-1))%MOD
    dp[i%2][i] = 1
    for j in range(1,i):
        dp[i%2][j] = (dp[(i-1)%2][j]*(A[i]-1)+dp[(i-1)%2][j-1])%MOD
for j in range(1,Q+1):
    print(dp[N%2][B[j]])