Sparky_Master_WCH1226's blog

Komments on codeTON round 5 problem D
By Sparky_Master_WCH1226, history, 10 months ago, In English

This trick is well known in China.

For poor people that cannot use youtube:

https://www.bilibili.com/video/BV1uT4y1P7CX/

For international users:

https://www.youtube.com/watch?v=dQw4w9WgXcQ

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