#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
using namespace std;


int main()
{
    long long n, m, k, sum1= 0, sum2 = 0;
    string op;
    cin >> n >> m >> k >> op;
    vector<long long> hori(m), ver(n);
    for (int i = 0; i < m; i++){
        cin >> hori[i];
        sum2 += hori[i];
        sum2 %= k;
    }
    for (int i = 0; i < n; i++) cin >> ver[i];
    if (op == "+"){
        for (int i = 0; i < n; i++){
            sum1 += sum2 + ver[i] * m;
            sum1 %= k;
        }
    } else {
        for (int i = 0; i < n; i++){
            sum1 += sum2 * ver[i];
            sum1 %= k;
        }
    }
    cout << sum1%k << endl;
}