import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Scanner;
import java.util.Set;

public class Main {
	
	public static final long MOD = 1000003L;
	
	public static long mod_pow(final long x, final long a, final long mod){
		if(a == 0){
			return 1l;
		}else if(a == 1){
			return x;
		}else if(a % 2 != 0){
			return (x * mod_pow(x, a - 1, mod)) % mod;
		}else {
			final long ret = mod_pow(x, a / 2, mod);
			return (ret * ret) % mod;
		}
	}
	
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		final long x = sc.nextLong();
		final int N = sc.nextInt();
		
		long sum = 0;
		for(int i = 0; i < N; i++){
			sum += mod_pow(x, sc.nextLong(), MOD);
		}
		
		System.out.println(sum);
	}
	
}