#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using PII = std::pair<int, int>;
using PLL = std::pair<ll, ll>;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)


const int mod = 1e9 + 7;

ll cal(ll r, ll c, char op)
{
    if (op == '*')
        return r * c;
    if (op == '+')
        return r + c;
    return 0;
}

int main()
{

#ifdef DEBUG
    cout << "DEBUG MODE" << endl;
    ifstream in("input.txt"); //for debug
    cin.rdbuf(in.rdbuf());    //for debug
#endif

    ll h, w, k, r, c, x;
    ll d;
    char op;
    cin >> h >> w >> k >> op;
    r = c = 0;
    rep(i, w) cin >> x, c += x, c %= k;
    rep(i, h) cin >> x, r += x, r %= k;

    if (op == '*')
        cout << (r * c) % k << endl;
    else
        cout << (((r * w) % k) + ((c * h) % k)) % k << endl;
    
    

    return 0;
}