# import sys; input = sys.stdin.buffer.readline
# sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 998244353; INF = float("inf")
import copy

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	N, Q = getlist()
	A = getlist()
	B = getlist()
	DP = [[0] * (N + 1) for i in range(N + 1)]
	DP[0][0] = 1
	for i in range(N):
		for j in range(N):
			DP[i + 1][j] += DP[i][j] * (A[i] - 1)
			DP[i + 1][j + 1] += DP[i][j]
			DP[i + 1][j] %= con
			DP[i + 1][j + 1] %= con

	for i in range(Q):
		print(DP[-1][B[i]])


if __name__ == '__main__':
	main()