def f(a):
    r = [0]*M
    r[0] = 1
    v = 0
    for ai in a:
        v ^= ai
        r[v] += 1
    s = [0]*M
    for i,ri in enumerate(r):
        s[0] += ri*(ri-1)//2
        for j in range(i+1,M):
            s[i^j] += ri*r[j]
    for i in range(M):
        s[i] %= MOD
    return s

n,m,k = map(int,input().split())
*a, = map(int,input().split())
*b, = map(int,input().split())
M = 1024
MOD = 10**9+7
ra = f(a)
rb = f(b)
ans = 0
for i in range(M):
    ans += ra[i]*rb[k^i]%MOD
print(ans%MOD)