import java.util.*;
public class Main {
        static Scanner sc = new Scanner(System.in);
        static void myout(Object t){System.out.println(t);}
        static String getStr(){return sc.next();}
        static int getInt(){return sc.nextInt();}
        static Long getLong(){return sc.nextLong();}
        static boolean isNext(){return sc.hasNext();}
        public static void main(String[] args){
          long x = getLong();
          long N = getLong();
          int mod = 1000003;
          long output = 0;
          for(int i = 0; i < N; i++){
            output += originPow(x,getLong(),mod);
            output %= mod;
          }
          myout(output);
        }
        //便利メソッド追加枠ここから
static long originPow(long x, long n,int m) {
        long ans = 1;
        while (n > 0) {
                if ((n & 1) == 1)ans = ans * x % m;
                x = x * x % m;
                n >>= 1;
        }
        return ans;
}
        //便利メソッド追加枠ここまで
}