#include <bits/stdc++.h>
using namespace std;
using lint     = long long;
const lint inf = 1LL << 60;
const lint mod = 1000000007;

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    lint n, m, k;
    cin >> n >> m >> k;
    string op;
    cin >> op;
    vector<lint> b(m);
    for (int i = 0; i < m; ++i) {
        cin >> b[i];
    }
    vector<lint> a(n);
    lint atot = 0;
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
        atot += a[i];
        atot %= k;
    }
    lint ret = 0;
    for (int i = 0; i < m; ++i) {
        if (op == "+") {
            ret += n * b[i] + atot;
        } else {
            ret += b[i] * atot;
        }
        ret %= k;
    }
    cout << ret << "\n";
    return 0;
}