#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
signed main() { 
  ios::sync_with_stdio(false); cin.tie(0);
  int n, m, k;
  cin >> n >> m >> k;
  char op;
  cin >> op;
  vector<int> a(n), b(m);
  for (int i = 0; i < m; i++) cin >> b[i];
  for (int i = 0; i < n; i++) cin >> a[i];
  long long ans = 0;
  if (op == '+') {
    map<int, int> mp;
    for (int i = 0; i < n; i++) mp[b[i] % k]++;
    for (int i = 0; i < n; i++) ans += mp[(k - a[i] % k) % k];
  } else {
    map<int, int> mp1, mp2;
    for (int i = 0; i < n; i++) mp1[__gcd(a[i], k)]++;
    for (int i = 0; i < m; i++) mp2[__gcd(b[i], k)]++;
    vector<pair<int, int>> v, w;
    for (auto p : mp1) v.push_back(p);
    for (auto p : mp2) w.push_back(p);
    for (auto& p : v) for (auto& q : w) if (1LL * p.first * q.first % k == 0) {
      ans += 1LL * p.second * q.second;
    } 
  }
  cout << ans << endl;
  return 0;
}