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

const int MOD = 1000003;
int pows[MOD + 10];

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

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

	int N; cin >> N;
	int res = 0;

	while(N--){
		int a; cin >> a;

		res += pows[a % (MOD - 1)];
		if(res >= MOD)
			res -= MOD;
	}

	cout << res << endl;
	return 0;
}