import java.util.*;

public class Main {
    static final int MOD = 1000003;
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int n = sc.nextInt();
        long[] values = new long[31];
        int[] keys = new int[31];
        values[0] = 1;
        values[1] = x;
        keys[0] = 0;
        keys[1] = 1;
        for (int i = 2; i < values.length; i++) {
            keys[i] = keys[i - 1] * 2;
            values[i] = (values[i - 1] * values[i - 1]) % MOD;
        }
        long total = 0;
        int[] arr = new int[n];
        for (int i = 0; i < n; i++) {
            int y = sc.nextInt();
            long sum = 1;
            for (int j = 30; j > 0; j--) {
                if (y >= keys[j]) {
                    sum *= values[j];
                    sum %= MOD;
                    y %= keys[j];
                } 
            }
            total += sum;
            total %= MOD;
        }
        System.out.println(total);
    }
}