https://codeforces.com/blog/entry/55274
Good Blog Post Resources about Algorithm and Data Structures: https://codeforces.com/blog/entry/13529
Bitmasking - https://codeforces.com/blog/entry/18169 SOS DP - https://codeforces.com/blog/entry/45223
DP - https://codeforces.com/blog/entry/67679