import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class No16_2 {

	static int K = 1000003;

	public static void main(String[] args) throws IOException{
		//累乗の加算　　二分累乗法で作り直し
		String[] text = readStr();
		int x = Integer.parseInt(text[0].split(" ")[0]);
		int N = Integer.parseInt(text[0].split(" ")[1]) , a , i , len;
		int sum = 0 , rui;
		int[] r = new int[32];
		String bit;
		r[0] = x;

		
		for(i = 1;i < 32;i++) {
			r[i] = (int)((long)Math.pow(r[i - 1], 2) % K);
		}
		
		for(i = 0;i < N;i++) {
			rui = 1;
			a = Integer.parseInt(text[1].split(" ")[i]);
			bit = Integer.toBinaryString(a);
			len = bit.length();
			for(int k = 0;k < len;k++) {
				if(bit.charAt(k) == '1') {
					rui = (int)((long)rui * (long)r[len - k - 1] % K);
				}
			
			}
			sum = (sum + rui) % K;
			
			
		}

		System.out.println(sum);

	}
	

	public static String[] readStr() throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		ArrayList<String> list = new ArrayList<>();

		do {
			list.add(br.readLine());
		}while(br.ready());

		br.close();

		String[] text = new String[list.size()];
		list.toArray(text);

		return text;

	}

}