import sys
input = sys.stdin.readline

N,M=map(int,input().split())
A=list(map(int,input().split()))
B=list(map(int,input().split()))

mod=998244353

for i in range(30):
    ac=0
    bc=0

    for a in A:
        if a & (1<<i) != 0:
            ac+=1

    for b in B:
        if b & (1<<i) != 0:
            bc+=1

    if ac%2!=bc%2:
        print(0)
        exit()

ANS=pow(pow(2,(N-1)*(M-1),mod),20,mod)
print(ANS)