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Solving your first problem in C++ on CodeChef https://www.youtube.com/watch?v=fm7tTWy-H-E
STL
- https://www.topcoder.com/community/data-science/data-science-tutorials/power-up-c-with-the-standard-template-library-part-1/
- https://www.topcoder.com/community/data-science/data-science-tutorials/power-up-c-with-the-standard-template-library-part-2/
- http://codeforces.com/blog/entry/5217
- http://codeforces.com/blog/entry/15643
- https://www.quora.com/Competitive-Programming/What-are-some-cool-C++-tricks-to-use-in-a-programming-contest
Policy Based Data structure