# -*- coding: utf-8 -*-
require 'minitest/autorun'

BuildTrack =->{ 

# Program begins here ----------

_={│:[1,4],─:[2,8],┌:[4,8],┐:[4,2],└:[1,8],┘:[1,2],┼:[1,4,2,8]}
s=->a,l,b{l==[]&&a==[]?b:(l.product(l).any?{|q,r|q,r=q[0],r[0];(q[0]-r[0])**2+(q[1]-r[1])**2>a.size**2}?!0:(w,f=l.pop
w&&v=!a.size.times{|i|y=_[x=a[i]]
f&&y&[f]==[]||(k=l.select{|p,d|w!=p||y&[d]==[]}
(y-[f]).map{|d|z=[w[0]+(d<2?-1:(d&4)/4),w[1]+(d==2?-1:d>7?1:0)]
g=d<3?d*4:d/4
b[z]?_[b[z]]&[g]!=[]||v=0:k<<[z,g]}
v||r=s[a[0...i]+a[i+1..-1],k,b.merge({w=>x})]
return r if r)}))}
c=eval"[#{gets}]"
r=s[6.downto(0).map{|i|[_.keys[i]]*c[i]}.flatten,[[[0,0],nil]],{}]
h=j=k=l=0
r.map{|w,_|y,x=w
h>x&&h=x
j>y&&j=y
k<x&&k=x
l<y&&l=y}
s=(j..l).map{|_|' '*(k-h+1)}
r.map{|w,p|y,x=w
s[y-j][x-h]=p.to_s}
puts s

# Program ends here ----------

}

describe BuildTrack do
  # takes ~0.1s
  def test_very_simple_square
    assert_equal <<-EOS, execute("2,2,1,1,1,1,0\n")
┌─┐
│ │
└─┘
EOS
  end

  # takes ~0.6s
  def test_added_more_vertical_pieces
    assert_equal <<-EOS, execute("6,2,1,1,1,1,0\n")
┌─┐
│ │
│ │
│ │
└─┘
EOS
  end

  # takes ~0.0s
  def test_throwing_cross_pieces_into_the_mix
    assert_equal <<-EOS, execute("0,0,2,1,1,2,1\n")
 ┌┐
┌┼┘
└┘ 
EOS
  end

  # takes ~0.4s
  def test_longer_track_containing_a_cross_piece
    assert_equal <<-EOS, execute("4,4,2,1,1,2,1\n")
   ┌┐
┌──┼┘
│  │ 
│  │ 
└──┘ 
EOS
  end

  # remove the leading "x_"s to run these long lasting tests

  # takes ~34s
  def x_test_OP_testcase_1
    assert_equal <<-EOS, execute("3,5,2,2,2,2,1\n")
┌──┐┌┐
│  └┼┘
│   │ 
└───┘ 
EOS
  end

  # takes ~2s
  def x_test_OP_testcase_2
    assert_equal <<-EOS, execute("0,0,1,4,4,1,3\n")
┌┐   
└┼┐  
 └┼┐ 
  └┼┐
   └┘
EOS
  end


  def execute(input)
    capture_stdout(input){ BuildTrack[] }
  end
end


# capture STDIN/STDOUT for testing purposes
require 'stringio'
module Kernel
  def capture_stdout(console_input = '')
    $stdin = StringIO.new(console_input)
    out = StringIO.new
    out.set_encoding 'utf-8'
    $stdout = out
    yield
    return out.string
  ensure
    $stdout = STDOUT
    $stdin = STDIN
  end
end