int@n,@s,@p[n],q[],v[],a=0;
sortA_index(n,p,q);
rep(j,n){
	v[q[j]]=j;
}
rep(i,n){
	int j=v[i];
	if((j==0||p[j]-p[j-1]>s)&&(j==n-1||p[j+1]-p[j]>s)){
		q[a++]=i+1;
	}
}
wt(a);
wt(q(a));