#include <iostream>
#include <bits/stdc++.h>
using namespace std;
int main(void){
   int n, m, k;
   cin >> n >> m >> k;
   
   char op;
   cin >> op;
   
   vector<long long> b(m);
   for (int i = 0; i < m; i++) cin >> b[i];
   
   long long sumOfB = accumulate(b.begin(), b.end(), 0);
   
   vector<long long> a(n);
   for (int i = 0; i < n; i++) cin >> a[i];
   
   long long ans = 0;
   
   if (op == '+'){
       for (int i = 0; i < n; i++){
           ans += (m * a[i] + sumOfB);
           ans %= k;
       }
   }
   else{
       for (int i = 0; i < n; i++){
           ans += (a[i] * sumOfB);
           ans %= k;
       }
   }
   cout << ans << endl;
}