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();

      char op = sc.next().charAt(0);
      long sumB = 0L;
      for(int i = 0; i < m; i++)
      	sumB = (sumB + sc.nextInt()) % k;

      long res = 0L;
      if(op == '+') {
      	for(int i = 0; i < n; i++)
      		res = (res + sc.nextLong() * m % k + sumB) % k;
      } else {
      	for(int i = 0; i < n; i++)
      		res = (res + sc.nextLong() * sumB % k) % k;
      }

      System.out.println(res);
  }
}