#include<bits/stdc++.h>
using namespace std;

#define all(v) v.begin(),v.end()
using ll = long long;
using ull = unsigned long long;
using vll=vector<ll>;
using vvll = vector<vector<ll>>;
ll mod=998244353;

vector<ll> fact,invfact,inv;

void init(ll N){
    fact.resize(N+5);
    inv.resize(N+5);
    invfact.resize(N+5);
    fact[0]=1;fact[1]=1;
    invfact[0]=1;invfact[1]=1;
    inv[0]=1;inv[1]=1;
    for(int i=2;i<N+3;i++){
        fact[i]=fact[i-1]*i%mod;
        inv[i]=mod-inv[mod%i]*(mod/i)%mod;
        invfact[i] = invfact[i-1]*inv[i]%mod;
    }
}
ll nCk(ll n,ll x){
    return fact[n]*invfact[n-x]%mod*invfact[x]%mod;
}
ll powmod(ll x,ll n,ll m){
    ll res=1;
    while(n>0){
        if(n&1) res*=x;
        x*=x;
        res%=m;
        x%=m;
        n>>=1;
    }
    return res;
}
int main(){
    ll N;
    cin>>N;
    init(N);
    ll ans=0;
    ll n=N;
    for(int i=N;i>N/2;i--){
        ans+=powmod(2,n,mod)*nCk(N,i)*2;
        ans%=mod;
        n-=2;
    }
    if(N%2==0){
        ans+=nCk(N,N/2);
    }
    cout << ans%mod << endl;
}