3 files changed, 35 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0dc05a8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+/1.rb
+/2.rb
+/3.rb
+/4.rb
diff --git a/q.rb b/q.rb
new file mode 100644
index 0000000..f6324d2
--- /dev/null
+++ b/q.rb
@@ -0,0 +1,23 @@
+                                 k=1;eval(       s=
+    (                         %w{s="k=#{1-k};eval
+   (s=(                     %w{#{s}})*'')";s+=";
+   %q\x5f                  "+s;i=f=0;puts([%|B*(#~%
+   ":4~$%65~              $'39~$*/8~$-,6~%1'6~&K~
+   (I~$L~%K~'H~           (G~*D~'F~)C~+@~.<~17~
+    .8~);~$=~(5|,%|"      0A)~"&''=)~#'''9)~%''
+     '5)~''''1)~)'''-)~+'''))~-'''%)~/''/~1''+~
+       3'''~5'''~7'''~7)''~5-''~3)#'''~1)''''~/
+   )+'''~-)/'''~+)3'''~))7'''~');''&~%)?0|,][k
+    ].tr("~","\n").gsub(/./){n=$&.ord-33;(f=!f
+      )?s[(i+=n)-n,n]:"\40"*n}+"_")})*'');%q_
+       k=1;eval(s=(%w{s="k=#{1-k};eval(s=(%w{
+         #{s}})*'')";s+=";%q\x5f"+s;i=f=0;pu
+      ts([%|B*(#~%":4~$%65~$'39~$*/8~$-,6~%
+        1'6~&K~(I~$L~%K~'H~(G~*D~'F~)C~+@~
+          .<~17~.8~);~$=~(5|,%|"0A)~"&''=
+             )~#'''9)~%'''5)~''''1)~)'''
+                -)~+'''))~-'''%)~/''/~
+             1''+~3'''~5'''~7'''~7)'
+        '~5-''~3)#'''~1)''''~/)+''
+   '~-)/'''~+)3'''~))7'''~');''
+       &~%)?0|,][k].tr("~",_
diff --git a/test.sh b/test.sh
new file mode 100644
index 0000000..abcc879
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,8 @@
+rm -f {1,2,3,4}.rb
+ruby q.rb > 1.rb
+ruby 1.rb > 2.rb
+ruby 2.rb > 3.rb
+ruby 3.rb > 4.rb
+
+diff 1.rb 3.rb || echo err
+diff 2.rb 4.rb || echo err