prb 1. Simple sorting
prb 2. Binary Search
prb3. Dynamic programming
prb 4: Maths ( result of sterling's formula & logarithms)
prb 5: Disjoint Union data structure ( with path compression)
Though i did a great job today i am a bit sad that i still don't see the corner cases correctly during the first time i code for a problem.
Rank in the contest: 41 / 900
Link to the Scoreboard:
http://www.codechef.com/rankings/DCOD2015?filterBy=&order=asc&page=2&sortBy=rank
Lesson Learn From The Contest:
ALWAYS LOOK FOR CORNER CASES BEFORE YOU SUBMIT YOUR SOLUTION !!!