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

int main() {
  long N, M, K;
  char op;
  cin >> N >> M >> K >> op;
  vector<long> A(N), B(M);
  for (long &b : B) cin >> b;
  for (long &a : A) cin >> a;

  long ans = 0;
  if (op == '+') {
    map<long, long> MA;
    for (long a : A) MA[a % K]++;
    for (long b : B) ans += (b % K) ? MA[K - b % K] : MA[0];
  } else {
    map<long, long> MA1, MA2;
    for (long a : A) MA1[__gcd(a, K)]++;
    for (long b : B) MA2[__gcd(b, K)]++;
    for (auto ma1 : MA1)
      for (auto ma2 : MA2)
        if (ma1.first * ma2.first % K == 0) ans += ma1.second * ma2.second;
  }
  cout << ans << "\n";
}