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

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;
    }

    int64_t sum = 0;
    if (op == '+') {
        sum = m * ({
            int64_t x = 0;
            for (auto&& v : a) {
                x += v;
            }
            x;
        }) + n * ({
            int64_t x = 0;
            for (auto&& v : b) {
                x += v;
            }
            x;
        });
    } else {
        sum = ({
            int64_t x = 0;
            for (auto&& v : a) {
                x += v;
            }
            x;
        }) * ({
            int64_t x = 0;
            for (auto&& v : b) {
                x += v;
            }
            x;
        });
    }

    cout << sum % k << endl;
}