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 = new long[m];
        for (int i = 0; i < m; i++) {
            colums[i] = sc.nextInt();
        }
        int[] rows = new int[n];
        for (int i = 0; i < n; i++) {
            rows[i] = sc.nextInt();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                long value;
                if (isPlus) {
                    value = colums[j] + rows[i];
                } else {
                    value = colums[j] * rows[i];
                }
                ans += (int)(value % k);
                ans %= k;
            }
        }
        System.out.println(ans);
    }
}