https://paste2.org/90UOykyP
https://paiza.io/projects/8PjFkk7xQ0nq1x3eFKHXmw
https://jsfiddle.net/w6qgmfph/
http://paste.jp/7bf7b5ba/
https://pastebin.com/fdsty779
https://ideone.com/1MWXGv