#include <iostream>
using namespace std;

#define X 100
#define MOD 1000003

int n, x;
int m[X+1] = { 1, };

long long calc(int a)
{
	if ( m[a] == 0 ) {
		m[a] = (calc(a-1) * x) % MOD;
	}
	return m[a];
}

int main()
{
	cin >> x >> n;

	int r = 0;
	for ( int i = 0; i < n; i++ ) {
		int a;
		cin >> a;
		r = (r + calc(a)) % MOD;
	}

	cout << r << endl;

	return 0;
}