#include<iostream>
using namespace std;
typedef unsigned long long ull;
ull M = 1000003;

ull power(ull x, ull n)
{
	ull tmp = 1;

	if (n > 0)
	{
		if (n % 2 == 0) tmp = power((x*x) % M, n / 2) % M;
		else tmp = (power((x*x) % M, n / 2) * x) % M;
	}
	return tmp;
}

int main()
{
	int x, n, i;
	ull a[101], sum = 0;

	cin >> x >> n;

	for (i = 1; i <= n; i++)
	{
		cin >> a[i];
		sum += power(x, a[i]);
	}

	cout << sum % M << endl;
}