#include <bits/stdc++.h>

using namespace std;

const int mo = 998244353;
const int maxn = 1e7+9;
long long fac[maxn];
long long invfac[maxn];

long long power(int a, int b) {
	long long ans = 1;
	for (; b; b >>= 1, a = 1LL * a * a % mo) {
		if (b & 1) {
			ans *= a;
			ans %= mo;
		}
	}	
	return ans;
}

void ppre(){
	fac[0] = 1;
	for(int i = 1; i < maxn; ++ i){
		fac[i] = 1LL * fac[i-1] * i;
		fac[i] %= mo;
	}
	
	invfac[maxn - 1] = power(fac[maxn - 1], mo - 2);
	for (int i = maxn - 1; i; i--) {
		invfac[i - 1] = 1LL * invfac[i] * i % mo;
	}
//	cout << invfac[2] << "\n";
	assert(1LL * fac[2] * invfac[2] % mo == 1);
}

int main(){
	ppre();
	int n;
	cin >> n;
	long long ans = 0;
	
	for(int i = 1; n - 2 * i + 1 >= 0; ++ i){
		ans = (ans + 1LL * fac[n - i] * invfac[i - 1] % mo * invfac[n - 2 * i + 1] % mo * fac[i - 1] % mo * fac[n - i] % mo) % mo;
	}
	
	cout << ans << "\n";
	return 0;
}