n,m,k=map(int,input().split())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
for i in range(1,n):a[i]^=a[i-1]
for j in range(1,m):b[j]^=b[j-1]
a1=[0]*1024
b1=[0]*1024
a2=[0]*1024
b2=[0]*1024
for x in a:a1[x]+=1
for y in b:b1[y]+=1
for i in range(1024):
  for j in range(i,1024):
    if i==j:
      a2[i^j]+=a1[i]*(a1[j]-1)//2
      b2[i^j]+=b1[i]*(b1[j]-1)//2
    else:
      a2[i^j]+=a1[i]*a1[j]
      b2[i^j]+=b1[i]*b1[j]
ans=0
for i in range(1024):
  j=k^i
  ans+=(a1[i]+a2[i])*(b1[j]+b2[j])
  ans%=10**9+7
print(ans)