#include<iostream>
using namespace std;
const long mod=998244353;
int N;
long FAC,ALL[2<<17],TWO[2<<17];
main()
{
    cin>>N;
    FAC=1;
    for(int i=1;i<=N;i++)FAC=FAC*i%mod;
    ALL[1]=0;
    ALL[2]=1;
    for(int i=3;i<=N;i++)ALL[i]=(i-1)*(ALL[i-1]+ALL[i-2])%mod;
    TWO[0]=1;
    for(int i=3;i<=N;i++)
    {
        if(i%2==1)TWO[i]=((i-1)*TWO[i-1]+2*(i-1)*TWO[i-2])%mod;
        else TWO[i]=((i-1)*TWO[i-1]+2*(i-2)*TWO[i-4])%mod;
    }
    cout<<((FAC-2*ALL[N]+TWO[N])%mod+mod)%mod<<endl;
}