#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n, m, k;
  cin >> n >> m >> k;
  char op;
  cin >> op;
  vector<int> a(n), b(m);
  for (int i = 0; i < m; ++i) {
    cin >> b[i];
  }
  for (int i = 0; i < n; ++i) {
    cin >> a[i];
  }
  long long sum_b = accumulate(b.begin(), b.end(), 0LL);
  sum_b %= k;
  long long sum_a = accumulate(a.begin(), a.end(), 0LL);
  sum_a %= k;
  if (op == '+') cout << (sum_a * m + sum_b * n) % k << '\n';
  else cout << (sum_a * sum_b) % k << '\n';
  return 0;
}