import java.util.*;
import java.io.*;

public class Main {
    static final int MOD = 1000003;
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] first = br.readLine().split(" ", 2);
        long x = Integer.parseInt(first[0]);
        int n = Integer.parseInt(first[1]);
        long[] arr = new long[22];
        long[] base = new long[22];
        arr[0] = 1;
        arr[1] = x;
        base[0] = 1;
        base[1] = 2;
        for (int i = 2; i <= 21; i++) {
            arr[i] = (arr[i - 1] * arr[i - 1]) % MOD;
            base[i] = base[i - 1] * 2;
        }
        String[] line = br.readLine().split(" ", n);
        long ans = 0;
        for (int i = 0; i < n; i++) {
            long a = Integer.parseInt(line[i]);
            long cur = x;
            long y = 1;
            for (int j = 20; j >= 0; j--) {
                if (a / base[j] == 1) {
                    y *= arr[j + 1];
                }
                a %= base[j];            
                y %= MOD;
            }
            ans += y;
            ans %= MOD;
        }
        System.out.println(ans);
    }
}