#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define printVec(v) printf("{"); for (const auto& i : v) { std::cout << i << ", "; } printf("}\n");
#define degreeToRadian(deg) (((deg)/360)*2*M_PI)
#define radianTodegree(rad) (((rad)/2/M_PI)*360)
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
using namespace std;
using P = pair<int,int>;
using ll = long long;
const ll INF = 1LL<<60;
const int MOD = 1e9 + 7;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};

//cin.tie(0);ios::sync_with_stdio(false);
//cout << fixed << setprecision(15) << y << endl;
int main() {
  ll n, m, k;
  cin >> n >> m >> k;
  char op;
  cin >> op;

  vector<ll> a(n), b(m);
  rep (i, m) cin >> b[i];
  rep (i, n) cin >> a[i];
  ll a_sum = accumulate(a.begin(), a.end(), 0LL);

  ll sum = 0;
  rep (i, m) {
    if (op == '+') {
      sum += ((b[i] * n) % k) + (a_sum % k);
      sum %= k;
    }

    if (op == '*') {
      sum += ((a_sum % k) * b[i]);
      sum %= k;
    }
  }

  cout << sum << endl;
  return 0;
}