#include <iostream>
#include <vector>
#define REP(i, n) for (int i = 0; i < n; i++)
typedef long long ll;
using namespace std;

int main() {
    int N,M,K;
    cin>>N>>M>>K;
    string op;
    cin >> op;
    vector<ll> vca, vcb;
    REP(i, M) {
        ll l;
        cin >> l;
        vcb.push_back(l);
    }
    REP(i, N) {
        ll l;
        cin >> l;
        vca.push_back(l);
    }
    ll suma = 0;
    REP(i, N) {
        suma = (suma + vca.at(i)) % K;
    }
    ll sumb = 0;
    REP(i, M) {
        sumb = (sumb + vcb.at(i)) % K;
    }
    if (op == "+") {
        cout << (M * suma + N * sumb) % K << endl;
    } else if (op == "*") {
        cout << (suma * sumb) % K << endl;
    }
    return 0;
}