ll@n,@s,@p[n],q[],z[],a=0;sortA_index(n,p,q);rep(i,n)i&&p[i]-p[i-1]<=s||i<n-1&&p[i+1]-p[i]<=s||(z[a++]=q[i]+1);sortA(a,z);wt(a);wt(z(a));