#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>

using namespace std;

const int MOD = 1000003;

int main() {
	int x, n;

	cin >> x >> n;
	vector<int> a(n);
	int maxi = 0;
	for (int i = 0; i < n; i++) {
		cin >> a[i];
		maxi = max(maxi, a[i]);
	}

	vector<int> memo(maxi);
	memo[0] = 1;
	for (int i = 1; i <= maxi; i++) {
		memo[i] = (memo[i - 1] * x) % MOD;
	}

	int ans = 0;
	for (int i = 0; i < n; i++) {
		ans = (ans + memo[a[i]]) % MOD;
	}

	cout << ans << endl;
	return 0;
}