#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int n, m;
    cin >> n >> m;
    ll K;
    cin >> K;
    char op;
    cin >> op;
    vector<ll> b(m);

    for (int i = 0; i < m; ++i) {
        cin >> b[i];
    }

    vector<ll> a(n);

    for (int i = 0; i < n; ++i) {
        cin >> a[i];
    }

    ll ans;
    if (op == '+') {
        ll suma = 0;
        for (int i = 0; i < n; ++i) {
            (suma += a[i]) %= K;
        }

        ll sumb = 0;
        for (int i = 0; i < m; ++i) {
            (sumb += b[i]) %= K;
        }

        ans = (suma * m % K + sumb * n % K) % K;       
    } else {
        ll suma = 0;
        for (int i = 0; i < n; ++i) {
            (suma += a[i]) %= K;
        }

        ll sumb = 0;
        for (int i = 0; i < m; ++i) {
            (sumb += b[i]) %= K;
        }
        ans = suma * sumb % K;
    }
    cout << ans << "\n";
    return 0;
}