#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
using namespace std;
#define REP(i,m,n) for(int i=(m);i<(n);i++)
#define rep(i,n) REP(i,0,n)
#define pb push_back
#define all(a) a.begin(),a.end()
#define rall(c) (c).rbegin(),(c).rend()
#define mp make_pair
#define double long double
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<ll> vec;
typedef vector<vec> mat;
const ll inf=1e9+7;
const ll mod=1e9+7;
//gcd
ll gcd(ll a,ll b){
    if(min(a,b)==0)return max(a,b);
    if(max(a,b)%min(a,b)==0)return min(a,b);
    return gcd(min(a,b),max(a,b)%min(a,b));
}
int main(){
    ll n,m,k;cin>>n>>m>>k;
    vector<ll>a(n),b(m);
    char c;cin>>c;
    bool f=c=='+';
    rep(i,m)cin>>b[i];
    rep(i,n)cin>>a[i];
    if(f){
        map<ll,ll>ma;
        rep(i,m){
            ll s=b[i]%k;
            if(ma.find(s)!=ma.end())ma[s]++;
            else ma[s]=1;
        }
        ll ans=0;
        rep(i,n){
            ll s=a[i]%k;
            ans=ans+ma[k-s];
        }
        cout<<ans<<endl;
    }else{
        vector<ll>c(0);
        rep(i,n){
            ll s=gcd(k,a[i]);
            c.pb(k/s);
        }
        sort(all(c));
        map<ll,ll>ma;
        vector<ll>d(c.size());
        rep(i,c.size()){
            rep(j,m){
                if(b[j]%c[i]==0)d[i]++;
            }
        }
        rep(i,c.size()){
            if(ma.find(c[i])==ma.end())ma[c[i]]=d[i];
        }
        ll ans=0;
        rep(i,n){
            ll s=gcd(k,a[i]);
            ans=ans+ma[k/s];
        }
        cout<<ans<<endl;
    }
}