#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using vc = vector<char>;
using vvc = vector<vector<char>>;
using u64 = uint64_t;
using pqi = priority_queue<int>;
using dqi = deque<int>;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define llrep(i, n) for (LL i = 0; i < (int)(n); i++)
#define nrep(i, s, n) for (int i = s; i < n; i++)
#define drep(i, n) for (int i = (n) - 1; i >= 0; i--;)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define pb push_back
#define mp make_pair
#define int long long
const int INF = 1e17;
const double pi = 3.14159265358979;
const int mod = 998244353;
const int MOD = 1000000007;

using mint = modint998244353;

//sni:tmp,pi,vvc,no,NO,yes,YES,vi,keta,pq,gpq

signed main(){

 ios::sync_with_stdio(false);
 std::cin.tie(nullptr);

 int n;
 cin >> n;
 mint k = n;
 mint ans = k+3;
 ans *= (k+2);
 ans /= 6;
 cout << ans.val() << endl;


}