import sys
input = sys.stdin.readline

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

for i in range(N):
    for j in range(N+1):
        dp[(i+1)%2][j] = 0
        
    for j in range(N+1):
        dp[(i+1)%2][j] += dp[i%2][j]
        dp[(i+1)%2][j] %= MOD
        
        if j+1<=N:
            dp[(i+1)%2][j+1] += dp[i%2][j]*(A[i]-1)
            dp[(i+1)%2][j+1] %= MOD

for Bi in B:
    print(dp[N%2][N-Bi])