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About

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Teaching (OTIS)

Olympiad

  •  For beginners
  •  Problems
  •  MOP
  •  ELMO
  •  USEMO

Hobbies

  •  Puzzle hunts
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plz learn code

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  •  Learning path

Publications

  •  EGMO book
  •  Napkin (v1.5)
  •  Course notes

Advice

Contact

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Photos

I guess here are some pictures of myself. Click to enlarge any of them.

Updated Sun 19 Sep 2021, 15:23:54 UTC by efda1836b091