import sys
input = sys.stdin.readline
MOD = 998244353
def main():
    N, Q = map(int,input().split())
    A = list(map(int,input().split()))
    B = list(map(int,input().split()))
    dp = [0]*(N+1)
    dp[0] = A[0]-1
    dp[1] = 1
    for k in range(1,N):
        temp = [0]*(N+1)
        temp[0] = dp[0]*(A[k]-1)
        temp[0] %= MOD
        for l in range(1,N+1):
            temp[l] = dp[l-1] + dp[l]*(A[k]-1)
            temp[l] %= MOD
        dp = temp[::]
    for e in B:
        print(dp[e]%MOD)

if __name__ == '__main__':
    main()