#include <bits/stdc++.h>

using namespace std;

#define INF 2000000000
#define MOD 1000003
typedef long long ll;
typedef pair<int, int> P;


int main()
{
	int x, n;
	cin >> x >> n;
	ll ret = 0;
	for (int i = 0; i < n; i++) {
		ll tmp;
		cin >> tmp;
		if (tmp>50) {
			int tmpa, tmpb;
			if (tmp%2==0) {
				tmpa = tmp/2;
				tmpb = tmp/2;
			} else {
				tmpa = tmp/2;
				tmpb = tmp/2+1;
			}
			ll a = pow(x, tmpa);
			ll b = pow(x, tmpb);
 	  	        ret += ((a % 1000003) * (b % 1000003)) % 1000003;
		} else {
			ll a = pow(x, tmp);
			ret += a % 1000003;
		}
	}
	cout << ret << endl;

}