import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.math.BigInteger;

public class NO016 {

    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(
                    System.in));
            long[] xN = strTointArray(br.readLine());
            BigInteger[] a = strTointArrayBigInt(br.readLine());
            BigInteger x = new BigInteger(Long.toString(xN[0]));
            BigInteger ans = new BigInteger("0");
            BigInteger mod = new BigInteger("1000003");
            for (int i = 0; i < xN[1]; i++) {
                ans = ans.add(x.modPow(a[i], mod));
            }

            System.out.println(ans.mod(mod));
        } catch (Exception e) {
            System.err.println("Error:" + e.getMessage());
        }
    }

    static long[] strTointArray(String S) {
        String[] strArray = S.split(" ");
        long[] longArray = new long[strArray.length];
        for (int i = 0; i < strArray.length; i++) {
            longArray[i] = Long.parseLong(strArray[i]);
        }
        return longArray;
    }

    static BigInteger[] strTointArrayBigInt(String S) {
        String[] strArray = S.split(" ");
        BigInteger[] longArray = new BigInteger[strArray.length];
        for (int i = 0; i < strArray.length; i++) {
            longArray[i] = new BigInteger(strArray[i]);
        }
        return longArray;
    }
}