MOD = 10 ** 9 + 7

n, m, k = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

def f(A):
    cnt = [0] * 1024
    cnt2 = [0] * 1024
    cnt2[0] = 1
    xor = 0
    for a in A:
        xor ^= a
        for k in range(1024):
            cnt[xor ^ k] += cnt2[k]
            cnt[xor ^ k] %= MOD
        cnt2[xor] += 1
    return cnt

A = f(A)
B = f(B)
ans = 0
for i in range(1024):
    ans += A[i] * B[i ^ k]
    ans %= MOD
print(ans)