#include "bits/stdc++.h"

using namespace std;
using ll = long long;

const ll MOD = 1000003LL;

void Main() {
    ll x, N;
    cin >> x >> N;
    vector<ll> a(N, 0);
    for (int i = 0; i < N; ++i) {
        cin >> a[i];
    }
    vector<ll> xn(100000001, 0);
    xn[0] = 1LL;
    xn[1] = x;
    for (ll i = 2; i < xn.size(); ++i) {
        xn[i] = (x * xn[i - 1]) % MOD;
    }
    ll ans = 0LL;
    for (ll i = 0; i < N; ++i) {
        ans += xn[a[i]];
        ans %= MOD;
    }
    cout << ans << endl;
}

int main() {
    std::cout << std::fixed << std::setprecision(15);
    Main();
    return 0;
}