#include "bits/stdc++.h"
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;

typedef long long ll;

ll gcd(ll x, ll y) {
    if (y == 0) return x;
    return gcd(y, x % y);
}

int main() {
    ll N, M, K;
    char op;
    cin >> N >> M >> K >> op;
    vector<ll> A(N), B(M);
    rep(i, M) {
        cin >> B[i];
    }
    rep(i, N) {
        cin >> A[i];
    }
    map<ll, ll> ma, mb;
    ll ans = 0;
    if (op == '+') {
        rep(i, N) ma[A[i] % K]++;
        rep(i, M) mb[B[i] % K]++;
        for (auto p : ma) {
            ans += p.second * mb[(K - p.first) % K];
        }
    } else {
        rep(i, N) ma[K / gcd(A[i], K)]++;
        rep(i, M) mb[gcd(B[i], K)]++;
        for (auto p : ma) {
            for (auto q : mb) {
                if (q.first % p.first == 0) ans += p.second * q.second;
            }
        }
    }
    cout << ans << endl;
}