#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    int n, m, k;
    cin >> n >> m >> k;

    char op;
    cin >> op;

    ll s = 0, t = 0;
    for (int j = 0; j < m; j++) {
        int b;
        cin >> b;
        s += b;
    }
    for (int i = 0; i < n; i++) {
        int a;
        cin >> a;
        t += a;
    }
    s %= k;
    t %= k;

    if (op == '+') {
        cout << (s * n + t * m) % k << endl;
    } else {
        cout << s * t % k << endl;
    }


    return 0;
}