import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int k = sc.nextInt();
        boolean isPlus = (sc.next().charAt(0) == '+');
        long colums = 0;
        for (int i = 0; i < m; i++) {
            colums += sc.nextInt();
            colums %= k;
        }
        long rows = 0;
        for (int i = 0; i < n; i++) {
            rows += sc.nextInt();
            rows %= k;
        }
        if (isPlus) {
            System.out.println((colums * n + rows * m) % k);
        } else {
            System.out.println(colums * rows % k);
        }
    }
}