#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define MD 998244353

int inverse(int a){
	int b=MD;
	int u=1;
	int v=0;
	int s,t;
	while(b){
		t=a/b;
		s=b; b=a-t*b; a=s;
		s=v; v=u-t*v; u=s;
	}
	if(u<0){
		u+=MD;
	}
	return u;
}

#define M 200001

int ifac[M];

void mkfac(){
	long x=571834101;
	for(int i=M;i--;){
		ifac[i]=x=x*(i+1)%MD;
	}
}

main(){
	mkfac();
	int n,h;
	scanf("%d",&n);
	h=(n>>1)+1;
	long y=0,z=0;
	for(int i=0;i<h;i+=2){
		y=(y*16+(long)ifac[i]*(long)ifac[n-i])%MD;
	}
	y<<=n&3;
	for(int i=n&~1;i>=h;i-=2){
		z=(z*16+(long)ifac[i]*(long)ifac[n-i])%MD;
	}
	z<<=4-(n&3);
	printf("%d",(y+z)*2%MD*inverse(ifac[n])%MD);
}