import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		int k = sc.nextInt();
		String s = sc.next();
		long[] b = new long[m];
		for (int i = 0; i < b.length; i++) {
			b[i] = sc.nextLong();
		}
		long[] a = new long[n];
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextLong();
		}
		sc.close();

		long ans = 0;
		long suma = 0;
		for (int i = 0; i < a.length; i++) {
			suma += a[i];
		}
		long sumb = 0;
		for (int i = 0; i < b.length; i++) {
			sumb += b[i];
		}
		suma %= k;
		sumb %= k;
		if ("+".equals(s)) {
			ans = suma * m + sumb * n;
		} else {
			ans = suma * sumb;
		}
		ans %= k;
		System.out.println(ans);
	}
}