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

int main() {
  int n, m, k;
  cin >> n >> m >> k;
  char op;
  cin >> op;
  int64_t a = 0, b = 0;
  int t;
  for (int i = 0; i < m; i++) {
    cin >> t;
    b += t;
  }
  for (int i = 0; i < n; i++) {
    cin >> t;
    a += t;
  }
  int64_t ans = 0;
  a %= k;
  b %= k;
  if (op == '+') ans = (m * a % k + n * b % k) % k;
  else ans = a * b % k;
  cout << ans << '\n';
  return 0;
}