#include <bits/stdc++.h>
#include <atcoder/math>
#include <atcoder/modint>
using namespace atcoder;
using namespace std;
using ll = long long;
using mint = modint998244353;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  ll N;
  cin >> N;

  mint ans = 0;
  for(ll i = 1; i <= N; i++) { ans += floor_sum(N + 1, i, 1, 0); }

  cout << ans.val() << "\n";
}