#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>
#include <deque>
#include <queue>
#include <array>
#include <set>
#include <map>
#include <cmath>
#include <complex>
#include <algorithm>
#include <numeric>
#include <utility>
#include <tuple>
#include <bitset>
#include <cstdint>
#include <cassert>
#include <random>
#include <iterator>

using namespace std;
using i64 = int64_t;
using i32 = int32_t;

int main() {
    i64 n, m, k;
    char op;
    cin >> n >> m >> k >> op;
    vector<i64> a(n), b(m);
    for (int i = 0; i < m; ++i) cin >> b[i];
    for (int i = 0; i < n; ++i) cin >> a[i];

    i64 ans = 0;
    if (op == '+') {
        for (int i = 0; i < n; ++i) ans += m * a[i];
        for (int i = 0; i < m; ++i) ans += n * b[i];
    } else {
        i64 x = 0, y = 0;
        for (int i = 0; i < n; ++i) x += a[i];
        for (int i = 0; i < m; ++i) y += b[i];
        ans = (x % k) * (y % k);
    }
    cout << ans % k << endl;
    return 0;
}