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  1. arr = [["メンテナンス中でない:0"],["有効"],["OK"],["OK"],["OK"],["OK"],["OK"],["OK"],["1件"],["1","null","0"],["2","0","null","3","1"],["成功","失敗"]["200番台","200番台以外],["0","1","2","3","4","5","6","7","8","9"],["成功","失敗"],["200番台","200番台以外"],["0","404","502","503","504","522",530",560","599"]];
  2.  
  3. p arr
Runtime error #stdin #stdout #stderr 0s 28216KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
prog.rb:1: syntax error, unexpected tINTEGER, expecting ']'
...00番台","200番台以外],["0","1","2","3","4","5","6","7"...
...                               ^