Codes and write-ups from various online coding competitions
Useful Links
https://discuss.codechef.com/questions/48877/data-structures-and-algorithms (lots of tutorials) http://codeforces.com/blog/entry/17842 (competitive programming practice advice) https://www.hackerearth.com/getstarted-competitive-programming/ https://www.cs.cmu.edu/~eugene/teach/acm05a/homework.html https://github.com/vhf/free-programming-books/blob/master/problem-sets-competitive-programming.md
http://codeforces.com/blog/entry/23054 (awesome list of programming resources) https://www.quora.com/What-is-the-best-strategy-to-improve-my-skills-in-competitive-programming-in-2-3-months http://mdotsabouri.blogspot.com/2014/10/my-recipe-to-improve-your-programming.html http://codeforces.com/blog/entry/14426 http://shivamkhandelwal.in/beginners-guide-to-competitive-programming/
http://yular.github.io/2015/06/08/Algorithm-Contest-Online-Judge-List/ discusses some sites http://haifengjin.com/codeforces/
Contests: http://ch24.org/ https://www.deadline24.pl/ hc2.ch