#include <bits/stdc++.h>
using namespace std;

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

	vector<long long> nx(1000003);
	nx[0] = 1;
	for (int i = 1;i < 1000003;i++) {
		nx[i] = nx[i - 1] * x % 1000003;
	}
	long long sum = 0;
	for (int i = 0;i < n;i++) {
		sum += nx[a[i] % 1000003];
	}
	cout << sum << endl;


	return 0;
}