import java.util.Scanner;

public class Yukicoder16 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int N = sc.nextInt();
		long res = 0;
		for (int i = 0; i < N; i++) {
			res += powMod(x, sc.nextInt()) % 1000003;
		}
		System.out.println(res);
	}
	
	static long powMod(int a, int n) {
		long res = 1;
		for (int i = 0; i < n; i++) {
			res = a * (res % 1000003);
		}
		return res;
	}
}