import sys
input = sys.stdin.readline

from collections import Counter

N,M,K=map(int,input().split())
A=list(map(int,input().split()))
B=list(map(int,input().split()))

XOR=[0]
for a in A:
    XOR.append(XOR[-1]^a)

C=Counter(XOR)
S=[0]*1024

for i in range(1024):
    S[0]+=C[i]*(C[i]-1)//2
    for j in range(i+1,1024):
        S[i^j]+=C[i]*C[j]


XOR=[0]
for a in B:
    XOR.append(XOR[-1]^a)

C=Counter(XOR)
S2=[0]*1024

for i in range(1024):
    S2[0]+=C[i]*(C[i]-1)//2
    for j in range(i+1,1024):
        S2[i^j]+=C[i]*C[j]

ANS=0
for i in range(1024):
    ANS+=S[i]*S2[K^i]
    ANS%=10**9+7

print(ANS)