#include <iostream>
#include <algorithm>
#include <cstring>
#include <climits>
#define N_MAX 100
#define MOD 1000003
using namespace std;

int power(int x, int a)
{
	int ans = 1;
	for (int i = 0; i < a; ++i)
		ans = (ans * x) % MOD;
	return ans;
}

int main()
{
	int x, N, a[N_MAX];
	cin >> x >> N;
	
	for (int i = 0; i < N; ++i)
	{
		cin >> a[i];
		a[i] %= MOD - 1;
	}

	sort(a, a + N);

	int ans = power(x, a[0]);	
	for (int i = 1; i < N; ++i)
	{
		ans += power(x, a[i]);
		ans %= MOD;
	}

	cout << ans;

	return 0;
}