#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N = 1e7 + 10;
const int mod = 998244353;
int n, m, k;
string s1, s2;
int h[N], idx, ne[N];
vector<int> pa;
double a, b;
int infact[N];
int fact[N];

int qmi(int a, int k, int p) {
	int res = 1;
	while (k) {
		if (k & 1) res = res * a % p;
		a = a * a % p;
		k >>= 1;
	}
	return res;
}


void solve() {
	cin >> n;
	fact[0] = infact[0] = 1;
	for (int i = 1; i <= n; i++) {
		fact[i] = fact[i - 1] * i % mod;
		infact[i] = infact[i - 1] * qmi(i, mod - 2, mod) % mod;
	}
	int ans = 0;
	for (int i = 1; i <= n + 1; i++) {

		if (n - i >= i - 1) {
			int t1 = fact[n - i] % mod;
			int t2 = fact[n - i] * infact[n + 1 - 2 * i] % mod;
			ans = (ans + (t1 * t2) % mod) % mod;
		}

	}
	//cout<<fact[3]<<endl;
	cout << ans << endl;
}


signed main() {
	int t = 1;
	ios::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
#ifndef ONLINE_JUDGE
	freopen("in.txt", "r+", stdin);
	freopen("out.txt", "w+", stdout);
#endif
	//cin >> t;
	while (t--) {
		solve();
	}
}