N,M,K=map(int,input().split())
X=1<<10
mod=10**9+7
A=[0]+list(map(int,input().split()))
B=[0]+list(map(int,input().split()))
for i in range(1,N+1):
    A[i]^=A[i-1]
    B[i]^=B[i-1]
cntA=[0]*X
cntB=[0]*X
for a in A:
    cntA[a]+=1
for b in B:
    cntB[b]+=1
A=[0]*X
B=[0]*X
for a0 in range(X):
    for a1 in range(X):
        A[a0^a1]+=cntA[a0]*cntA[a1]
for b0 in range(X):
    for b1 in range(X):
        B[b0^b1]+=cntB[b0]*cntB[b1]
A[0]-=N+1
B[0]-=M+1
for x in range(X):
    A[x]//=2
    B[x]//=2
ans=0
for x in range(X):
    ans+=A[x]*B[x^K]%mod
    ans%=mod
print(ans)