#include <bits/stdc++.h>
using namespace std;

int main() {
    constexpr int64_t mod = 1000000007;
    int n, m, k;
    cin >> n >> m >> k;
    vector<int> a(n), b(m);
    for (int i = 0; i < n; i++) {
        cin >> a.at(i);
    }
    for (int i = 0; i < m; i++) {
        cin >> b.at(i);
    }
    
    vector<int64_t> sa(1024), sb(1024);
    sa.at(0) = 1;
    sb.at(0) = 1;
    int s = 0;
    for (int i = 0; i < n; i++) {
        s ^= a.at(i);
        sa.at(s)++;
    }
    s = 0;
    for (int i = 0; i < n; i++) {
        s ^= b.at(i);
        sb.at(s)++;
    }
    
    vector<int64_t> ca(1024), cb(1024);
    for (int i = 0; i < 1024; i++) {
        ca.at(0) += sa.at(i) * (sa.at(i) - 1) / 2;
        ca.at(0) %= mod;
        cb.at(0) += sb.at(i) * (sb.at(i) - 1) / 2;
        cb.at(0) %= mod;
    }
    for (int i = 1; i < 1024; i++) {
        for (int j = 0; j < 1024; j++) {
            if ((i ^ j) >= j) continue;
            ca.at(i) += sa.at(j) * sa.at(i ^ j);
            ca.at(i) %= mod;
            cb.at(i) += sb.at(j) * sb.at(i ^ j);
            cb.at(i) %= mod;
        }
    }
    
    int64_t ans = 0;
    for (int i = 0; i < 1024; i++) {
        ans += ca.at(i) * cb.at(i ^ k);
        ans %= mod;
    }
    cout << ans << endl;
}