N,Q = map(int, input().split())
A = [int(a) for a in input().split()]
B = [int(b) for b in input().split()]
mod = 998244353

L = [[0]*(N+1) for _ in range(2)]
L[0][0] = 1
for i in range(N):
    a = i%2
    b = (i+1)%2
    L[b] = [0]*(N+1)
    for j in range(i+2):
        L[b][j] += L[a][j]*(A[i]-1)
        if j > 0:
            L[b][j] += L[a][j-1]
        L[b][j] %= mod

for b in B:
    print(L[N%2][b])