import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner koko = new Scanner(System.in);
        long x= koko.nextLong();
        int n= koko.nextInt();
        long[] a = new long[n];
        long total=0;
        for(int i=0; i<n; i++){
            a[i]=koko.nextLong();
            a[i]=a[i]%1000002;
            long t=1;
            for(long j=0; j<a[i]; j++){
                t=(t*x)%1000003;
            }
            total = (total+t)%1000003;
        }
        System.out.println(total);
        
    }
}