#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

#include <atcoder/modint>
using mint = atcoder::dynamic_modint<1>;

int main() {
  int n, m, k;
  cin >> n >> m >> k;
  mint::set_mod(k);
  char op;
  cin >> op;
  mint ans = 0;
  ll row = 0;
  rep(i, m) {
    int x;
    cin >> x;
    row += x;
  }
  rep(i, n) {
    ll x;
    cin >> x;
    if (op == '+') {
      ans += row + x * m;
    }
    else {
      ans += row * x;
    }
  }
  cout << ans.val() << endl;
  return 0;
}