import sys
input = sys.stdin.readline

N, M, K = map(int, input().split())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
now = 0
cnt = [0]*1024
cnt[0] = 1

for ai in a:
    now ^= ai
    cnt[now] += 1

cnt2 = [0]*1024

for i in range(1024):
    for j in range(i):
        cnt2[i^j] += cnt[i]*cnt[j]
    
    cnt2[0] += cnt[i]*(cnt[i]-1)//2

now = 0
cnt3 = [0]*1024
cnt3[0] = 1

for bi in b:
    now ^= bi
    cnt3[now] += 1

cnt4 = [0]*1024

for i in range(1024):
    for j in range(i):
        cnt4[i^j] += cnt3[i]*cnt3[j]
    
    cnt4[0] += cnt3[i]*(cnt3[i]-1)//2

ans = 0
MOD = 10**9+7

for i in range(1024):
    ans = (ans+cnt2[i]*cnt4[i^K])%MOD

print(ans)