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Post: https://helloacm.com/teaching-kids-programming-the-fisher-yates-random-shuffle-algorithm-in-python/ If you like this video ...

00:01 Hello 02:05 Grid Walking 09:17 C(n,2) 11:15 Catalan 21:49 C(n,m)=C(n-1,m)+C(n-1,m-1) Post: ...

https://codeforces.com/contest/1526 Hope you all find this useful :D Also let me know what style is preferred (this or whiteboard) ...