#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;
    string op;
    cin >> n >> m >> k >> op;
    vector<long long> hori(m), ver(n);
    for (int i = 0; i < m; i++) cin >> hori[i];
    for (int i = 0; i < n; i++) cin >> ver[i];
    if (op == "+"){
        for (int i = 0; i < n; i++){
            for (int j = 0; j < m; j++){
                sum1 += (hori[j] + ver[i]);
                sum1 %= k;
            }
        }
    } else {
        for (int i = 0; i < n; i++){
            for (int j = 0; j < m; j++){
                sum1 += (hori[j] * ver[i]);
                if (sum1 > 1e18) sum1 %= k;
            }
        }
    }
    cout << sum1%k << endl;
}