#include"bits/stdc++.h"
//#include<bits/stdc++.h>
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
typedef long long ll;
const int mod = 1000003;

ll dp[100000000];

int main() {
	int x, n;
	ll a[102];
	ll ans = 0;
	cin >> x >> n;
	rep(i, 0, n)cin >> a[i];
	dp[0] = 1; dp[1] = x;
	rep(i, 2, 100000000) {
		dp[i] = dp[i-1] * x%mod;
	}
	rep(i, 0, n) {
		ans += dp[a[i]] % mod;
	}
	print(ans);
	return 0;
}