#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rep1(i, n) for (ll i = 1; i < (n); ++i)
#define rrep(i, n) for (ll i = n; i > 0; --i)
#define bitrep(i, n) for (ll i = 0; i < (1 << n); ++i)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define yesNo(b) ((b) ? "Yes" : "No")
using ll = long long;
using ull = unsigned long long;
using ld = long double;
string alphabet = "abcdefghijklmnopqrstuvwxyz";
string ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const double pi = 3.141592653589793;
int smallMOD = 998244353;
int bigMOD = 1000000007;

int main()
{
    ll n, m, k;
    cin >> n >> m >> k;
    char op;
    vector<ll> A(n), B(m);
    cin >> op;
    rep(i, m) cin >> B[i];
    rep(i, n) cin >> A[i];
    if (op == '+')
    {
        map<ll, ll> A2;
        rep(i, n) A2[A[i] % k]++;
        ll ans = 0;
        rep(i, m)
        {
            ans += A2[k - B[i] % k];
        }
        cout << ans << endl;
    }
    else if (op == '*')
    {
    }
    return 0;
}