import java.util.Scanner;

class Main{
	public static long p(long x,long n) {
		long r;
		if(1>n) return 1;
		r=p(x*x%1000003,n/2);
		if(n%2!=0) r=r*x%1000003;
		return r;
	}
	
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		long x=sc.nextLong(),n=sc.nextLong(),a,s=0,i;
		for(i=0;i<n;i++) {
			a=sc.nextLong();
			s=(s+p(x,a))%1000003;
		}
		sc.close();
		System.out.print(s);
	}
}