import sys
ONLINE_JUDGE = sys.argv[-1] == 'ONLINE_JUDGE'
if not ONLINE_JUDGE and len(sys.argv)>1 and sys.argv[1]!="<":
    sys.stdin = open(sys.argv[1], "r", encoding="utf-8")

import sys
input = sys.stdin.readline
sys.setrecursionlimit(10 ** 6)
if "pypyjit" in sys.builtin_module_names:
    import pypyjit
    pypyjit.set_param("max_unroll_recursion=-1")


N,M=map(int,input().split())
A=list(map(int,input().split()))
B=list(map(int,input().split()))
MOD = 998244353
ans = 0
for i in range(20):
    n=sum([(a>>i)&1 for a in A])
    m=sum([(b>>i)&1 for b in B])
    if (n&1)!=(m&1):
        print(0)
        exit()
print(pow(pow(pow(2,20,MOD), N-1,MOD),M-1,MOD))