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function(e,t,r){var n=r(744784);function i(e){this.data=e,this.left=null,this.right=null,this.red=!0}function o(e){this._root=null,this._comparator=e,this.size=0}function a(e){return null!==e&&e.red}function s(e,t){var r=e.get_child(!t);return e.set_child(!t,r.get_child(t)),r.set_child(t,e),e.red=!0,r.red=!1,r}function l(e,t){return e.set_child(!t,s(e.get_child(!t),!t)),s(e,t)}i.prototype.get_child=function(e){return e?this.right:this.left},i.prototype.set_child=function(e,t){e?this.right=t:this.left=t},o.prototype=new n,o.prototype.insert=function(e){var t=!1;if(null===this._root)this._root=new i(e),t=!0,this.size++;else{var r=new i(void 0),n=0,o=0,u=null,c=r,f=null,d=this._root;for(c.right=this._root;;){if(null===d?(d=new i(e),f.set_child(n,d),t=!0,this.size++):a(d.left)&&a(d.right)&&(d.red=!0,d.left.red=!1,d.right.red=!1),a(d)&&a(f)){var p=c.right===u;d===f.get_child(o)?c.set_child(p,s(u,!o)):c.set_child(p,l(u,!o))}var h=this._comparator(d.data,e);if(0===h)break;o=n,n=h<0,null!==u&&(c=u),u=f,f=d,d=d.get_child(n)}this._root=r.right}return this._root.red=!1,t},o.prototype.remove=function(e){if(null===this._root)return!1;var t=new i(void 0),r=t;r.right=this._root;for(var n=null,o=null,u=null,c=1;null!==r.get_child(c);){var f=c;o=n,n=r,r=r.get_child(c);var d=this._comparator(e,r.data);if(c=d>0,0===d&&(u=r),!a(r)&&!a(r.get_child(c))){if(a(r.get_child(!c))){var p=s(r,c);n.set_child(f,p),n=p}else if(!a(r.get_child(!c))){var h=n.get_child(!f);if(null!==h)if(a(h.get_child(!f))||a(h.get_child(f))){var m=o.right===n;a(h.get_child(f))?o.set_child(m,l(n,f)):a(h.get_child(!f))&&o.set_child(m,s(n,f));var v=o.get_child(m);v.red=!0,r.red=!0,v.left.red=!1,v.right.red=!1}else n.red=!1,h.red=!0,r.red=!0}}}return null!==u&&(u.data=r.data,n.set_child(n.right===r,r.get_child(null===r.left)),this.size--),this._root=t.right,null!==this._root&&(this._root.red=!1),null!==u},e.exports=o}