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

typedef long long ll;
typedef pair<int,int> P;

int main(){
        ll n,m,k,tmp=0;
        cin>>n>>m>>k;
        ll sum1=0,sum2=0;
        vector<ll>a(n),b(m);
        char op;
        bool add=false;
        cin>>op;
        if(op=='+')add=true;
        for(int i=0;i<m;i++){
                cin>>b[i];
                sum1+=b[i];
                if(sum1>=k)sum1%=k;
        }
        for(int i=0;i<n;i++){
                cin>>a[i];
                sum2+=a[i];
                if(sum2>=k)sum2%=k;
        }
        if(add){
                tmp+=sum1*n;
                if(tmp>=k)tmp%=k;
                tmp+=sum2*m;
                if(tmp>=k)tmp%=k;
        }else{
                tmp+=(sum1*sum2);
                if(tmp>=k)tmp%=k;
        }
        cout<<tmp<<endl;
        return 0;
}