N,M,K = map(int,input().split())
a = list(map(int,input().split()))
b = list(map(int,input().split()))

P = 10 ** 9 + 7
C = 1024
S = [0] * C
T = [0] * C
Sum = 0
S[0] += 1
for i in a:
    Sum ^= i
    S[Sum] += 1
Sum = 0
T[0] += 1
for i in b:
    Sum ^= i
    T[Sum] += 1
SS = [0] * C
TT = [0] * C
for i in range(C):
    SS[0] += S[i] * (S[i]-1) // 2
    SS[0] %= P
    TT[0] += T[i] * (T[i]-1) // 2
    TT[0] %= P
    for j in range(i+1,C):
        SS[i^j] += S[i] * S[j]
        SS[i^j] %= P
        TT[i^j] += T[i] * T[j]
        TT[i^j] %= P
ans = 0
for i in range(C):
    ans += SS[i] * TT[i^K]
    ans %= P
print(ans)