Square a snowflake

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Problem

Print this square snowflake, made by repeatedly putting an X in every space with exactly one X among its eight neighbors.

https://codegolf.stackexchange.com/questions/204624/square-snowflake

-xnor

Options

exec is denied

rejudge feature is enabled

now post-mortem time, all source codes will be revealed

Sample input:_

*NOTHING*

Sample output:

XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX
XX   X   X   X   X   X   X   X   X   X   X   X   X   X   X   XX
X XXXX   XXXXX   XXXXX   XXXXX   XXXXX   XXXXX   XXXXX   XXXX X
  XX       X X   X X       X X   X X       X X   X X       XX  
X X XXX XXXX       XXXX XXXX       XXXX XXXX       XXXX XXX X X
XXX XX   X X X   X X X   X X X   X X X   X X X   X X X   XX XXX
X   X XXXX XXX   XXX XXXXX XXX   XXX XXXXX XXX   XXX XXXX X   X
      XX               X X   X   X   X X               XX      
X   X X XXX XXX XXX XXXX               XXXX XXX XXX XXX X X   X
XXX XXX XX   X   X   X X X   X   X   X X X   X   X   XX XXX XXX
X X X   X XXXX   XXXXX XXX XXX   XXX XXX XXXXX   XXXX X   X X X
  XXXXX   XX       X X   X X X   X X X   X X       XX   XXXXX  
X X   X X X XXX XXXX   XXXXX       XXXXX   XXXX XXX X X X   X X
XXXX XX XXX XX   X X X X   X X   X X   X X X X   XX XXX XX XXXX
X       X   X XXXX XXX XX XXXX   XXXX XX XXX XXXX X   X       X
              XX                               XX              
X       X   X X XXX XXX XXX XXX XXX XXX XXX XXX X X   X       X
XXXX XX XXX XXX XX   X   X   X   X   X   X   XX XXX XXX XX XXXX
X X   X X X X   X XXXX   XXXXX   XXXXX   XXXX X   X X X X   X X
  XXXXX   XXXXX   XX       X X   X X       XX   XXXXX   XXXXX  
X X X   X X   X X X XXX XXXX       XXXX XXX X X X   X X   X X X
XXX XXX XXXX XX XXX XX   X X X   X X X   XX XXX XX XXXX XXX XXX
X   X X X       X   X XXXX XXX   XXX XXXX X   X       X X X   X
      XXXXX XXX       XX               XX       XXX XXXXX      
X   X X   X X X X   X X XXX XXX XXX XXX X X   X X X X   X X   X
XXX XXXX XXXX   XXX XXX XX   X   X   XX XXX XXX   XXXX XXXX XXX
X X X       X X X X X   X XXXX   XXXX X   X X X X X       X X X
  XXXXX   XXXXX   XXXXX   XX       XX   XXXXX   XXXXX   XXXXX  
X X   X   X   X X X   X X X XXX XXX X X X   X X X   X   X   X X
XXXX XXX XXX XX XXXX XX XXX XX   XX XXX XX XXXX XX XXX XXX XXXX
X               X       X   X XXX X   X       X               X
                              XXX                              
X               X       X   X XXX X   X       X               X
XXXX XXX XXX XX XXXX XX XXX XX   XX XXX XX XXXX XX XXX XXX XXXX
X X   X   X   X X X   X X X XXX XXX X X X   X X X   X   X   X X
  XXXXX   XXXXX   XXXXX   XX       XX   XXXXX   XXXXX   XXXXX  
X X X       X X X X X   X XXXX   XXXX X   X X X X X       X X X
XXX XXXX XXXX   XXX XXX XX   X   X   XX XXX XXX   XXXX XXXX XXX
X   X X   X X X X   X X XXX XXX XXX XXX X X   X X X X   X X   X
      XXXXX XXX       XX               XX       XXX XXXXX      
X   X X X       X   X XXXX XXX   XXX XXXX X   X       X X X   X
XXX XXX XXXX XX XXX XX   X X X   X X X   XX XXX XX XXXX XXX XXX
X X X   X X   X X X XXX XXXX       XXXX XXX X X X   X X   X X X
  XXXXX   XXXXX   XX       X X   X X       XX   XXXXX   XXXXX  
X X   X X X X   X XXXX   XXXXX   XXXXX   XXXX X   X X X X   X X
XXXX XX XXX XXX XX   X   X   X   X   X   X   XX XXX XXX XX XXXX
X       X   X X XXX XXX XXX XXX XXX XXX XXX XXX X X   X       X
              XX                               XX              
X       X   X XXXX XXX XX XXXX   XXXX XX XXX XXXX X   X       X
XXXX XX XXX XX   X X X X   X X   X X   X X X X   XX XXX XX XXXX
X X   X X X XXX XXXX   XXXXX       XXXXX   XXXX XXX X X X   X X
  XXXXX   XX       X X   X X X   X X X   X X       XX   XXXXX  
X X X   X XXXX   XXXXX XXX XXX   XXX XXX XXXXX   XXXX X   X X X
XXX XXX XX   X   X   X X X   X   X   X X X   X   X   XX XXX XXX
X   X X XXX XXX XXX XXXX               XXXX XXX XXX XXX X X   X
      XX               X X   X   X   X X               XX      
X   X XXXX XXX   XXX XXXXX XXX   XXX XXXXX XXX   XXX XXXX X   X
XXX XX   X X X   X X X   X X X   X X X   X X X   X X X   XX XXX
X X XXX XXXX       XXXX XXXX       XXXX XXXX       XXXX XXX X X
  XX       X X   X X       X X   X X       X X   X X       XX  
X XXXX   XXXXX   XXXXX   XXXXX   XXXXX   XXXXX   XXXXX   XXXX X
XX   X   X   X   X   X   X   X   X   X   X   X   X   X   X   XX
XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX

Ranking

Ruby _

RankUserSizeTimeDateStatistics
1clock1042.27812020/05/26 02:14:440B / 40B / 61B

Ruby2 _

RankUserSizeTimeDateStatistics
1clock1062.20862020/05/26 02:13:440B / 40B / 63B
2rotary-o1110.63462020/05/25 23:04:430B / 37B / 70B

Perl _

RankUserSizeTimeDateStatistics
1tails1000.62112020/05/14 07:35:380B / 40B / 60B

Python _

RankUserSizeTimeDateStatistics
1clock1272.46142020/05/21 00:26:120B / 67B / 53B
2hallvabo1280.27292020/05/16 06:23:570B / 67B / 55B
3xnor1290.36262020/05/27 03:49:520B / 72B / 49B
4McBusLuck1680.62962020/05/14 02:25:540B / 89B / 58B
5clock(hallvabo)1252.47402020/05/27 16:25:200B / 69B / 50B

C _

RankUserSizeTimeDateStatistics
1tails1290.01662020/05/17 23:07:150B / 67B / 62B
2chocobi1980.01682020/05/14 08:21:070B / 94B / 104B
3sadakiyo18560.01342020/05/14 06:25:08145B / ?B / ?B

bc _

RankUserSizeTimeDateStatistics
1McBusLuck24620.00692020/05/14 01:08:080B / 1119B / 209B

gs2 _

RankUserSizeTimeDateStatistics
1tails380.78662020/05/26 14:43:5116B / 13B / 7B

Scala _

RankUserSizeTimeDateStatistics
1clock1352.62802020/05/26 21:29:146B / 61B / 63B

Language Ranking_

RankLangUserSizeScore
1gs2tails3810000
2Perltails1003800
3Rubyclock1043653
4Ruby2clock1063584
5Pythonclock(hallvabo)1253040
6Ctails1292945
7Scalaclock1352814
8bcMcBusLuck2462154

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