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function(e){if(!t)var t={map:function(e,t){var n={};return t?e.map(function(e,i){return n.index=i,t.call(n,e)}):e.slice()},naturalOrder:function(e,t){return e<t?-1:+(e>t)},sum:function(e,t){var n={};return e.reduce(t?function(e,i,r){return n.index=r,e+t.call(n,i)}:function(e,t){return e+t},0)},max:function(e,n){return Math.max.apply(null,n?t.map(e,n):e)}};e.exports=function(){function e(e,t,n){return(e<<10)+(t<<5)+n}function n(e){var t=[],n=!1;function i(){t.sort(e),n=!0}return{push:function(e){t.push(e),n=!1},peek:function(e){return n||i(),void 0===e&&(e=t.length-1),t[e]},pop:function(){return n||i(),t.pop()},size:function(){return t.length},map:function(e){return t.map(e)},debug:function(){return n||i(),t}}}function i(e,t,n,i,r,s,a){this.r1=e,this.r2=t,this.g1=n,this.g2=i,this.b1=r,this.b2=s,this.histo=a}function r(){this.vboxes=new n(function(e,n){return t.naturalOrder(e.vbox.count()*e.vbox.volume(),n.vbox.count()*n.vbox.volume())})}return i.prototype={volume:function(e){return(!this._volume||e)&&(this._volume=(this.r2-this.r1+1)*(this.g2-this.g1+1)*(this.b2-this.b1+1)),this._volume},count:function(t){var n=this.histo;if(!this._count_set||t){var i,r,s,a=0;for(i=this.r1;i<=this.r2;i++)for(r=this.g1;r<=this.g2;r++)for(s=this.b1;s<=this.b2;s++)a+=n[e(i,r,s)]||0;this._count=a,this._count_set=!0}return this._count},copy:function(){return new i(this.r1,this.r2,this.g1,this.g2,this.b1,this.b2,this.histo)},avg:function(t){var n=this.histo;if(!this._avg||t){var i,r,s,a,o=0,l=0,u=0,c=0;for(r=this.r1;r<=this.r2;r++)for(s=this.g1;s<=this.g2;s++)for(a=this.b1;a<=this.b2;a++)o+=i=n[e(r,s,a)]||0,l+=i*(r+.5)*8,u+=i*(s+.5)*8,c+=i*(a+.5)*8;o?this._avg=[~~(l/o),~~(u/o),~~(c/o)]:this._avg=[~~(8*(this.r1+this.r2+1)/2),~~(8*(this.g1+this.g2+1)/2),~~(8*(this.b1+this.b2+1)/2)]}return this._avg},contains:function(e){var t=e[0]>>3;return gval=e[1]>>3,bval=e[2]>>3,t>=this.r1&&t<=this.r2&&gval>=this.g1&&gval<=this.g2&&bval>=this.b1&&bval<=this.b2}},r.prototype={push:function(e){this.vboxes.push({vbox:e,color:e.avg()})},palette:function(){return this.vboxes.map(function(e){return e.color})},size:function(){return this.vboxes.size()},map:function(e){for(var t=this.vboxes,n=0;n<t.size();n++)if(t.peek(n).vbox.contains(e))return t.peek(n).color;return this.nearest(e)},nearest:function(e){for(var t,n,i,r=this.vboxes,s=0;s<r.size();s++)((n=Math.sqrt(Math.pow(e[0]-r.peek(s).color[0],2)+Math.pow(e[1]-r.peek(s).color[1],2)+Math.pow(e[2]-r.peek(s).color[2],2)))<t||void 0===t)&&(t=n,i=r.peek(s).color);return i},forcebw:function(){var e=this.vboxes;e.sort(function(e,n){return t.naturalOrder(t.sum(e.color),t.sum(n.color))});var n=e[0].color;n[0]<5&&n[1]<5&&n[2]<5&&(e[0].color=[0,0,0]);var i=e.length-1,r=e[i].color;r[0]>251&&r[1]>251&&r[2]>251&&(e[i].color=[255,255,255])}},{quantize:function(s,a){if(!s.length||a<2||a>256)return!1;var o,l,u,c,d,_,f,h,p,E,m,g,A=(u=Array(32768),s.forEach(function(t){l=t[0]>>3,u[o=e(l,t[1]>>3,t[2]>>3)]=(u[o]||0)+1}),u),I=0;A.forEach(function(){I++});var T=(f=1e6,h=0,p=1e6,E=0,m=1e6,g=0,s.forEach(function(e){c=e[0]>>3,d=e[1]>>3,_=e[2]>>3,c<f?f=c:c>h&&(h=c),d<p?p=d:d>E&&(E=d),_<m?m=_:_>g&&(g=_)}),new i(f,h,p,E,m,g,A)),S=new n(function(e,n){return t.naturalOrder(e.count(),n.count())});function N(n,i){for(var r,s=1,a=0;a<1e3;){if(!(r=n.pop()).count()){n.push(r),a++;continue}var o=function(n,i){if(i.count()){var r=i.r2-i.r1+1,s=i.g2-i.g1+1,a=i.b2-i.b1+1,o=t.max([r,s,a]);if(1==i.count())return[i.copy()];var l,u,c,d,_=0,f=[],h=[];if(o==r)for(l=i.r1;l<=i.r2;l++){for(d=0,u=i.g1;u<=i.g2;u++)for(c=i.b1;c<=i.b2;c++)d+=n[e(l,u,c)]||0;_+=d,f[l]=_}else if(o==s)for(l=i.g1;l<=i.g2;l++){for(d=0,u=i.r1;u<=i.r2;u++)for(c=i.b1;c<=i.b2;c++)d+=n[e(u,l,c)]||0;_+=d,f[l]=_}else for(l=i.b1;l<=i.b2;l++){for(d=0,u=i.r1;u<=i.r2;u++)for(c=i.g1;c<=i.g2;c++)d+=n[e(u,c,l)]||0;_+=d,f[l]=_}return f.forEach(function(e,t){h[t]=_-e}),function(e){var t,n,r,s,a,o=e+"1",u=e+"2",c=0;for(l=i[o];l<=i[u];l++)if(f[l]>_/2){for(r=i.copy(),s=i.copy(),a=(t=l-i[o])<=(n=i[u]-l)?Math.min(i[u]-1,~~(l+n/2)):Math.max(i[o],~~(l-1-t/2));!f[a];)a++;for(c=h[a];!c&&f[a-1];)c=h[--a];return r[u]=a,s[o]=r[u]+1,[r,s]}}(o==r?"r":o==s?"g":"b")}}(A,r),l=o[0],u=o[1];if(!l||(n.push(l),u&&(n.push(u),s++),s>=i||a++>1e3))return}}S.push(T),N(S,.75*a);for(var y=new n(function(e,n){return t.naturalOrder(e.count()*e.volume(),n.count()*n.volume())});S.size();)y.push(S.pop());N(y,a-y.size());for(var C=new r;y.size();)C.push(y.pop());return C}}}().quantize}