#include<bits/stdc++.h>

using namespace std;
using ll = long long;


int main()
{
    int n, m; cin >> n >> m;
    ll mod; cin >> mod;
    char op; cin >> op;
    vector<ll> a(n), b(m);
    for(int i = 0; i < m; i++)cin >> b[i];
    for(int i = 0; i < n; i++)cin >> a[i];


    ll acc = 0;
    for(int i = 0; i < m; i++)acc += b[i], acc %= mod;

    ll ans = 0;
    for(int i = 0; i < n; i++) {
        if(op == '+') {
            ans += (a[i] * m + acc);
            ans %= mod;
        } else {
            ans += (acc * a[i]) % mod;
            ans %= mod;
        }
    }
    cout << ans << endl;
}