#include<bits/stdc++.h>
#define ALL(v) std::begin(v),std::end(v)
using lint=long long;
using ld=long double;
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    lint n,m,k;std::cin>>n>>m>>k;
    char c;std::cin>>c;
    std::vector<lint>a(n),b(m);
    for(lint&y:b)std::cin>>y;
    for(lint&x:a)std::cin>>x;
    lint ans=0;
    if(c=='+'){
        std::map<lint,lint>map;
        for(lint y:b)map[y%k]++;
        for(lint x:a){
            x%=k;
            ans+=map[x?k-x:0];
        }
    }else{
        std::vector<lint>divs;
        for(lint i=1;i*i<=k;i++){
            if(k%i)continue;
            divs.push_back(i);
            if(i*i!=k)divs.push_back(k/i);
        }
        std::map<lint,lint>map;
        for(lint y:b){
            map[std::gcd(k,y)]++;
        }
        for(auto[d,mu]:map){
            for(lint e:divs){
                if(d==e||d%e)continue;
                map[e]+=mu;
            }
        }
        for(lint x:a){
            ans+=map[k/std::gcd(k,x)];
        }
    }
    std::cout<<ans<<'\n';
}