#include<bits/stdc++.h>

using namespace std;
using ll = long long;
ll mod;


int main()
{
    int n, m, k; cin >> n >> m >> k;
    char op; cin >> op;
    function<ll(ll,ll)> f = (op == '+' ? [](ll a, ll b){return a + b;} : [](ll a, ll b){return a * b;});
    vector<ll> b(m), a(n);
    for(int i = 0; i < m; i++)cin >> b[i];
    for(int i = 0; i < n; i++)cin >> a[i];

    ll sum = 0;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) {
            sum += f(a[i], b[j]);
            sum %= k;
        }
    }
    cout << sum << endl;
}