#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
using T = tuple<int, int, int>;
#define al(a) a.begin(), a.end()
#define ral(a) a.rbegin(), a.rend()
#define sz(a) (int)a.size()
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rrep(i, n) for (int i = 1; i <= (n); ++i)
#define drep(i, n) for (int i = (n)-1; i >= 0; --i)
#define db(a, b) cout << #a << ": " << a << " " << #b << ": " << b << endl;

#include <atcoder/modint>
using namespace atcoder;
using mint = modint;

int main() {
  int x, n;
  cin >> x >> n;
  vector<int> a(n);
  rep(i, n) cin >> a[i];
  mint::set_mod(1000003);
  mint ans;
  //   rep(i, n) ans += (mint(x)).pow(a[i]);

  map<ll, mint> mp;
  auto pow = [&](auto &f, ll x, ll n) -> mint {
    if (n == 0) return 1;
    if (n == 1) return x;
    if (mp.find(n) != mp.end()) return mp[n];

    if (n % 2) return f(f, x, n - 1) * x;
    mint res = f(f, x, n / 2);
    res *= res;
    return mp[n] = res;
  };

  rep(i, n) ans += pow(pow, x, a[i]);
  cout << ans.val() << endl;
  return 0;
}