#include <bits/stdc++.h>
#define int long long
#define endl '\n'
#define IOS ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr)
using namespace std;
typedef pair<int, int> pii;
const int maxn = 1e6;
const int mod=998244353;
int mypow(int a,int b)
{
    int ans=1;
    for(;b;b>>=1)
    {
        if(b&1)
            ans=ans*a%mod;
        a=(a*a)%mod;
    }
    return ans%mod;
}
signed main()
{
    IOS;
    int N;
    cin>>N;
    if(N==1)
    {
        cout<<1<<endl;
        return 0;
    }
    int a1=N-2,a2=1;
    for(int i=1;i<=N-2;i++)
        a2=a2*i%mod;
    int ans=a2*(N-1)%mod;
    for(int i=2;i<=N;i++)
    {
        if(N-i<i-1)break;
        ans=(ans+a1*a2%mod)%mod;
        int now=mypow(N-i,mod-2);
        a1=a1*now%mod;
        a1=(a1*(N-i-i+1)%mod)*(N-i-i)%mod;
        a2=a2*now%mod;
    }
    cout<<ans%mod<<endl;
}