usingnamespacestd; #define intn,p,sum; intx[200005]; signedmain(){ cin>>n>>p; for(inti=1;i<=n;++i) cin>>x[i]; sort(x+1,x+n+1); for(inti=1;i<=n;++i){ intl=upper_bound(x+i+1,x+n+1,fabs(p-x[i]))-x-1; intr=lower_bound(x+i+1,x+n+1,p+x[i])-x-1;...