from itertools import accumulate
from collections import Counter
from operator import xor
n, m, k = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
mod = 10 ** 9 + 7


def make_cnt(A):
    Axor = list(accumulate(A, func=xor, initial=0))
    C = Counter(Axor)
    cnt = [0] * 1024
    for i in range(1024):
        cnt[0] += C[i] * (C[i] - 1) // 2
        for j in range(i + 1, 1024):
            cnt[i ^ j] += C[i] * C[j]
            cnt[i ^ j] %= mod
    return cnt


Acnt = make_cnt(A)
Bcnt = make_cnt(B)
ans = 0
for i in range(1024):
    ans += Acnt[i] * Bcnt[k ^ i]
    ans %= mod
print(ans)