OP

 
 t=.byte; M=.char; c=.sub; I=.concat; s=.ldexp; H=getfenv  () _ENV ; K=; r=; f=; i=;  (f) e,o,a=,,{} d=; n={} l=,d-  n[l]=(l); l=;  () e=((f,l,l),)l=l+; o=((f,l,l+e-),)l=l+e; o ;e=(())a[]=e; l<#f   l=() n[l] o=n[l] o=e..(e,,);n[d]=e..(o,,)a[#a+],e,d=o,o,d+ ; .(a); i=(); n=bit  bit.bxor  (l,o) e,n=,  l>  o>   c,a=l%,o%  c~=a  n=n+e  l,o,e=(l-c)/,(o-a)/,e*   l<o  l=o   l>   o=l%  o>  n=n+e  l,e=(l-o)/,e*   n    (e,l,o) o   l=(e/^(l-))%^((o-)-(l-)+); l-l%;  l=^(l-);(e%(l+l)>=l)   ;;; l=;  () e,o,a,c=(i,l,l+);e=(e,)o=(o,)a=(a,)c=(c,)l=l+;(c*)+(a*)+(o*)+e;;  () e=((i,l,l),);l=l+; e;;  () l=(); o=(); c=; n=((o,,)*(^))+l; l=(o,,); e=((-)^(o,));(l==) (n==)  e*; l=;c=;;(l==) (n==)(e*(/))(e*(/));; (e,l-)*(c+(n/(^)));; a=o;  (e) o;( e) e=();(e==) ;;;o=(i,l,l+e-);l=l+e; e={} l=,#o  e[l]=((((o,l,l)),))  (e);; l=o;  (...){...},(,...)   () t={,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,}; f={,,,,,,,,,}; l={}; a={t,,f,,l};a[]=(); l=() c={,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,}; o=,l   e=(); l;(e==) l=(()~=);(e==) l=();(e==) l=();;c[o]=l;;a[]=c  l=,() f[l-]=();; a=,()  c=((),); o=((),); n=(c,,); l=(o,,); l={l,(c,,),,,o};(n==) l[]=(c,,);l[]=(c,,);(n==) l[]=(o,,);(n==) l[]=(o,,)-;(n==) l[]=(o,,)-;l[]=(c,,);;t[a]=l;; a;;  (l,h,M) o=l[]; e=l[]; c=l[]; l=l[]; (...) n=o; a=e; I=c; c=l; C=i  e=; d=-; N={}; i={...}; t=(,...)-; J={}; o={}; l=,t  (l>=c) N[l-c]=i[l+]; o[l]=i[l+];;; l=t-c+  l; c;   l=n[e];c=l[]; c<=   c<=   c<=   c<=   c<=   c==  o[l[]]=(I[l[]],,M);  n=l[]; c={}; e=; a=d; l=n+,a  e=e+;c[e]=o[l];; c={o[n]((c,,a-n))}; l=n+l[]-;e=; l=n,l  e=e+;o[l]=c[e];;d=l;; c>   n=l[]; a={}; e=; c=n+l[]-; l=n+,c  e=e+;a[e]=o[l];; c={o[n]((a,,c-n))}; l=n+l[]-;e=; l=n,l  e=e+;o[l]=c[e];;d=l; o[l[]]=M[a[l[]]];; c<=   c>   M; t; i; h; c;o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];c=l[];h=o[l[]];o[c+]=h;o[c]=h[a[l[]]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]];e=e+;l=n[e]; l=l[],l[] o[l]=;;e=e+;l=n[e];o[l[]]=(l[]~=);e=e+;l=n[e];c=l[];i={};t=;M=c+l[]-; l=c+,M  t=t+;i[t]=o[l];;o[c]((i,,M-c));d=c;  l=l[],l[] o[l]=;;; c<=  (o[l[]]~=o[l[]]) e=e+; e=e+l[];; c>   n=l[]; a={}; e=; c=n+l[]-; l=n+,c  e=e+;a[e]=o[l];; c={o[n]((a,,c-n))}; l=n+l[]-;e=; l=n,l  e=e+;o[l]=c[e];;d=l;  n=l[]; c={}; e=; l=n+l[]-; l=n+,l  e=e+;c[e]=o[l];; c,l=(o[n]((c,,l-n)));l=l+n-;e=; l=n,l  e=e+;o[l]=c[e];;d=l;; c<=   c<=   c>   s; i; t; r; h; c;o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=M[a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];c=l[];h=o[l[]];o[c+]=h;o[c]=h[a[l[]]];e=e+;l=n[e];c=l[];r={};t=;i=c+l[]-; l=c+,i  t=t+;r[t]=o[l];;s={o[c]((r,,i-c))};i=c+l[]-;t=; l=c,i  t=t+;o[l]=s[t];;d=i;e=e+;l=n[e];o[l[]]=M[a[l[]]];e=e+;l=n[e];c=l[];h=o[l[]];o[c+]=h;o[c]=h[a[l[]]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];c=l[];r={};t=;i=c+l[]-; l=c+,i  t=t+;r[t]=o[l];;s={o[c]((r,,i-c))};i=c+l[]-;t=; l=c,i  t=t+;o[l]=s[t];;d=i;e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];  n=l[]; c={}; e=; l=n+l[]-; l=n+,l  e=e+;c[e]=o[l];; c,l=(o[n]((c,,l-n)));l=l+n-;e=; l=n,l  e=e+;o[l]=c[e];;d=l;; c==  o[l[]]=o[l[]];  n=l[]; a=l[]; l=n+; c={o[n](o[n+],o[l])}; e=,a  o[l+e]=c[e];; n=o[n+]; n  o[l]=n  e=e+;;; c<=   c>   s; i; t; r; M; c;o[l[]]=h[l[]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];c=l[];M=o[l[]];o[c+]=M;o[c]=M[a[l[]]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];c=l[];r={};t=;i=c+l[]-; l=c+,i  t=t+;r[t]=o[l];;s={o[c]((r,,i-c))};i=c+l[]-;t=; l=c,i  t=t+;o[l]=s[t];;d=i;e=e+;l=n[e]; o[l[]] e=e+; e=e+l[];; e=e+l[];; c<=   o[l[]] e=e+; e=e+l[];; c>   n=l[]; a=o[n+]; c=o[n]+a;o[n]=c; a>   c<=o[n+] e=e+l[];o[n+]=c;; c>=o[n+] e=e+l[];o[n+]=c;; o[l[]]=a[l[]];; c<=   c<=   c<=   c==   n=l[];o[n]=o[n]-o[n+];e=e+l[]; o[l[]][o[l[]]]=o[l[]];; c>  o[l[]]();d=A;  e=l[]; c={}; n=; l=e+l[]-; l=e+,l  n=n+;c[n]=o[l];;o[e]((c,,l-e));d=e;; c<=   c==  e=e+l[];  e=l[]; c={}; n=; l=e+l[]-; l=e+,l  n=n+;c[n]=o[l];;o[e]((c,,l-e));d=e;; c<=    o[l[]] e=e+; e=e+l[];; c>   d=I[l[]]; a; c={};a=({},{__index=(e,l) l=c[l]; l[][l[]];,__newindex=(o,l,e) l=c[l]l[][l[]]=e;;}); a=,l[] e=e+; l=n[e]; l[]==  c[a-]={o,l[]}; c[a-]={h,l[]};;J[#J+]=c;;o[l[]]=(d,a,M); o[l[]]();d=A;; c<=   c<=   c==  o[l[]]=#o[l[]];  n=l[]; a=l[]; l=n+; c={o[n](o[n+],o[l])}; e=,a  o[l+e]=c[e];; n=o[n+]; n  o[l]=n  e=e+;;; c>  o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]][a[l[]]]=o[l[]];e=e+;l=n[e];o[l[]]=M[a[l[]]];e=e+;l=n[e]; o[l[]] e=e+; e=e+l[];; o[l[]]={};; c<=   c==  o[l[]][o[l[]]]=o[l[]]; (o[l[]]~=o[l[]]) e=e+; e=e+l[];;; c<=   e=l[]; c=e+l[]-; n={}; l=; e=e,c  l=l+;n[l]=o[e];;  (n,,l); c==    ;  c; r; c; t; M,i; t;o[l[]]=h[l[]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];t=l[];M,i={o[t]()};i=t+l[]-;c=; l=t,i  c=c+;o[l]=M[c];;d=i;e=e+;l=n[e];o[l[]]=h[l[]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=h[l[]];e=e+;l=n[e];t=l[];r={};c=;i=t+l[]-; l=t+,i  c=c+;r[c]=o[l];;M={o[t]((r,,i-t))};i=t+l[]-;c=; l=t,i  c=c+;o[l]=M[c];;d=i;e=e+;l=n[e]; o[l[]] e=e+; e=e+l[];;; c<=   c<=   c<=   c<=   c==   n=l[]; c={}; e=; a=d; l=n+,a  e=e+;c[e]=o[l];; c={o[n]((c,,a-n))}; l=n+l[]-;e=; l=n,l  e=e+;o[l]=c[e];;d=l; o[l[]]={};; c>   o[l[]] e=e+; e=e+l[];; o[l[]]=a[l[]];; c<=   c>  o[l[]]=(l[]~=);  c; r; c; t; M,i; t;o[l[]]=h[l[]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];t=l[];M,i={o[t]()};i=t+l[]-;c=; l=t,i  c=c+;o[l]=M[c];;d=i;e=e+;l=n[e];o[l[]]=h[l[]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=h[l[]];e=e+;l=n[e];t=l[];r={};c=;i=t+l[]-; l=t+,i  c=c+;r[c]=o[l];;M={o[t]((r,,i-t))};i=t+l[]-;c=; l=t,i  c=c+;o[l]=M[c];;d=i;e=e+;l=n[e]; o[l[]] e=e+; e=e+l[];;; c<=  o[l[]]=h[l[]]; c==    ; o[l[]]=o[l[]]+a[l[]];; c<=   c<=   c==   c; r,c; i; c; h; s; t;o[l[]]=M[a[l[]]];e=e+;l=n[e];o[l[]]=M[a[l[]]];e=e+;l=n[e];t=l[];s=o[l[]];o[t+]=s;o[t]=s[a[l[]]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];o[l[]]=(l[]~=);e=e+;l=n[e];t=l[];h={};c=;i=t+l[]-; l=t+,i  c=c+;h[c]=o[l];;r,i=(o[t]((h,,i-t)));i=i+t-;c=; l=t,i  c=c+;o[l]=r[c];;d=i;e=e+;l=n[e];t=l[];h={};c=;i=d; l=t+,i  c=c+;h[c]=o[l];;r={o[t]((h,,i-t))};i=t+l[]-;c=; l=t,i  c=c+;o[l]=r[c];;d=i;e=e+;l=n[e];t=l[];r,i={o[t]()};i=t+l[]-;c=; l=t,i  c=c+;o[l]=r[c];;d=i;e=e+;l=n[e];o[l[]]=M[a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];  n=l[]; e=o[l[]];o[n+]=e;o[n]=e[a[l[]]];; c>    o[l[]] e=e+; e=e+l[];; o[l[]]=(l[]~=);; c<=   c==   c;o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];c=l[];o[c]=o[c]-o[c+];e=e+l[]; o[l[]][a[l[]]]=a[l[]];; c<=   n=l[]; e=o[l[]];o[n+]=e;o[n]=e[a[l[]]]; c==   e=l[]; c,n={o[e]()}; n=e+l[]-; l=; e=e,n  l=l+;o[e]=c[l];;d=n; o[l[]]=#o[l[]];; c<=   c<=   c<=   c==  o[l[]]=h[l[]]; o[l[]]=o[l[]][a[l[]]];; c==   e=l[]; c=e+l[]-; n={}; l=; e=e,c  l=l+;n[l]=o[e];;  (n,,l); o[l[]][a[l[]]]=o[l[]];; c<=   c==   d=I[l[]]; a; c={};a=({},{__index=(e,l) l=c[l]; l[][l[]];,__newindex=(o,l,e) l=c[l]l[][l[]]=e;;}); a=,l[] e=e+; l=n[e]; l[]==  c[a-]={o,l[]}; c[a-]={h,l[]};;J[#J+]=c;;o[l[]]=(d,a,M);  r; i; t; h; M; c;o[l[]][a[l[]]]=o[l[]];e=e+;l=n[e];c=l[];M=o[l[]];o[c+]=M;o[c]=M[a[l[]]];e=e+;l=n[e];o[l[]]={};e=e+;l=n[e];o[l[]][a[l[]]]=a[l[]];e=e+;l=n[e];c=l[];h={};t=;i=c+l[]-; l=c+,i  t=t+;h[t]=o[l];;r={o[c]((h,,i-c))};i=c+l[]-;t=; l=c,i  t=t+;o[l]=r[t];;d=i;e=e+;l=n[e];c=l[];M=o[l[]];o[c+]=M;o[c]=M[a[l[]]];e=e+;l=n[e];o[l[]]=a[l[]];; c<=   s; i; t; r; h; c;o[l[]]={};e=e+;l=n[e];o[l[]]=M[a[l[]]];e=e+;l=n[e];o[l[]]=M[a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];c=l[];h=o[l[]];o[c+]=h;o[c]=h[a[l[]]];e=e+;l=n[e];c=l[];r={};t=;i=c+l[]-; l=c+,i  t=t+;r[t]=o[l];;s={o[c]((r,,i-c))};i=c+l[]-;t=; l=c,i  t=t+;o[l]=s[t];;d=i;e=e+;l=n[e];e=e+l[]; c==   n=l[];o[n]=o[n]-o[n+];e=e+l[]; o[l[]]=o[l[]]+a[l[]];; c<=   c<=   c>  o[l[]][a[l[]]]=o[l[]];  n=l[]; a=o[n+]; c=o[n]+a;o[n]=c; a>   c<=o[n+] e=e+l[];o[n+]=c;; c>=o[n+] e=e+l[];o[n+]=c;;; c<=   e=l[]; c,n={o[e]()}; n=e+l[]-; l=; e=e,n  l=l+;o[e]=c[l];;d=n; c>  o[l[]]=o[l[]];  l=l[],l[] o[l]=;;; c<=   c>  o[l[]]=(I[l[]],,M); o[l[]]=M[a[l[]]];; c<=   M; t; i; h; c;o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];o[l[]]=o[l[]][a[l[]]];e=e+;l=n[e];c=l[];h=o[l[]];o[c+]=h;o[c]=h[a[l[]]];e=e+;l=n[e];o[l[]]=a[l[]];e=e+;l=n[e];o[l[]]=o[l[]];e=e+;l=n[e];o[l[]]=o[l[]];e=e+;l=n[e]; l=l[],l[] o[l]=;;e=e+;l=n[e];o[l[]]=(l[]~=);e=e+;l=n[e];c=l[];i={};t=;M=c+l[]-; l=c+,M  t=t+;i[t]=o[l];;o[c]((i,,M-c));d=c; c==  o[l[]]=o[l[]][a[l[]]]; o[l[]][a[l[]]]=a[l[]];;e=e+;;;; ((),{},())();