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

#define all(x) (x).begin(), (x).end()

int32_t main()
{
    int n, m, k;
    char op;
    cin >> n >> m >> k >> op;
    vector<int64_t> a(n), b(m);
    for (auto&& v : b) {
        cin >> v;
    }
    for (auto&& v : a) {
        cin >> v;
    }

    if (op == '+') {
        cout << (m * accumulate(all(a), 0) + n * accumulate(all(b), 0)) % k << endl;
    } else {
        int64_t out = accumulate(all(b), 0);
        out *= accumulate(all(a), 0);
        cout << out % k << endl;
    }
}