#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define inf 10e17
#define rep(i,n) for(long long i=0; i<n; i++)
#define repr(i,n,m) for(long long i=m; i<n; i++)
#define mod 1000000007
#define sorti(x) sort(x.begin(), x.end())
#define sortd(x) sort(x.begin(), x.end(), std::greater<long long>())
#define debug(x) std::cerr << (x) << std::endl;
#define roll(x) for (auto&& itr : x) { cerr << (itr) << " "; }

template <class T> inline void chmax(T &ans, T t) { if (t > ans) ans = t;}
template <class T> inline void chmin(T &ans, T t) { if (t < ans) ans = t;}

int main() {
  ll n, m, k;
  string op;
  cin >> n >> m >> k >> op;
  vector<ll> b(m), a(n);
  if (op == "+") {
    ll s = 0, t = 0;
    rep(i, m) {
      cin >> b[i];
      s += b[i] * n;
      s %= k;
    }
    rep(i, n) {
      cin >> a[i];
      t += a[i] * m;
      t %= k;
    }

    cout << (s + t) % k << endl;
  } else {
    ll s = 0;
    rep(i, m) {
      cin >> b[i];
      s += b[i];
      s %= k;
    }
    ll ans = 0;
    rep(i, n) {
      cin >> a[i];
      ans += a[i] * s;
      ans %= k;
    }

    cout << ans << endl;
  }
}