import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);

		int n = stdIn.nextInt(); //n行

		int m = stdIn.nextInt(); //m列
		
		int k = stdIn.nextInt(); //割る値

		String op = stdIn.next();

		int[] b = new int[m];

		for (int i = 0; i < m; i++) {
			b[i] = stdIn.nextInt();
		}

		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = stdIn.nextInt();
		}
		
		long sum = 0;
		
		if(op.equals("+")) {
			for(int i = 0; i < n; i++) {
				for(int j = 0; j < m; j++) {
					sum += (long)a[i]+b[j];
				}
				
			}
			
			sum%=k;
			
		}else {
			for(int i = 0; i < n; i++) {
				for(int j = 0; j < m; j++) {
					sum += ((long)a[i] * b[j]) % k;
				}
			}
			sum %= k;
		}
		
		System.out.println(sum);
		
		
	}

}