N, M, K = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
Ac, Bc = [0] * N, [0] * M
Ac[0], Bc[0] = A[0], B[0]
for i in range(1, N):
    Ac[i] = Ac[i - 1] ^ A[i]
for i in range(1, M):
    Bc[i] = Bc[i - 1] ^ B[i]
    
N2 = 1 << 10
a1, b1 = [0] * N2, [0] * N2
a2, b2 = [0] * N2, [0] * N2
for a in Ac:
    a1[a] += 1
for b in Bc:
    b1[b] += 1
    
mod = 10**9 + 7
ans = 0
for i in range(N2):
    for j in range(i, N2):
        if i == j:
            a2[0] += a1[i] * (a1[i] - 1)//2
            b2[0] += b1[i] * (b1[i] - 1)//2
        else:
            a2[i^j] += a1[i] * a1[j]
            b2[i^j] += b1[i] * b1[j]
            
for i in range(N2):
    ans += (a1[i] + a2[i]) * (b1[i^K] + b2[i^K])
    ans %= mod
    
print(ans)