#define MD 998244353
ll@n,@k;
Mint z;
if(n==1){
	z=k==2||k==3||k==4?3:1;
}else{
	Comb<Mint>c;
	z=c.C(2n+4,k);
	if(k%2==0){
		z+=c.C(n+2,k/2)*3;
	}else if(n%2){
		z+=c.C(n+1,k/2)*2;
	}
	z/=4;
}
wt(z);