This page preserves my competitive programming accomplishments for posterity.
I competed in several different international programming contests, usually in long-form formats. These competitions included CodeChef, HackerRank, and HackerEarth. I also solved hundreds of number theoretic problems in Project Euler, a mathematics contest.
I have ranked highly in these competitions. Achieving the top 25 out of over 150K worldwide and the top 4 out of over 20K in the US in two separate content sites HackerRank and CodeChef. It’s a coincidence that my peak ranks were the same on both sites and are perfect squares.
My primary purpose in participating in these competitions is to learn, practice, test new algorithms, and build a library of advanced algorithms. I have implemented virtually all the algorithms in the book Introduction To Algorithms by Cormen.
Examples of algorithms that I have implemented include:
- Max-Flow Min-Cost
- Simplex Algorithm
- Number Theoretic Transforms
- Centroid Decomposition
- Link Cut Trees
HackerRank
As the username wesnerm at HackerRank, I peaked at a contest rating of 2757 on August 1, 2018, ranking 25th out 172,871 (99.9th percentile) worldwide and 4th out of 21,227 (99.9th percentile) in the US. HackerRank no longer hosts competitions. My contest rank fell to 27th worldwide due to inactivity and remains 4th in the US as of August 1, 2023.
My contest profile is https://www.hackerrank.com/wesnerm.
My contest code can be found in https://github.com/wesnerm/CompetitiveProgramming/tree/master/HackerRank.
US Leaderboard
World Leaderboard
CodeChef
As the username wmoise at CodeChef, I peaked at a contest rating of 2696 (7/7 stars) on October 12, 2020, ranking 25th (99.9th percentile) worldwide and 4th (99.9th percentile) in the US. My contest rank fell to the early 100s worldwide due to inactivity and remains 4th in the US. I usually placed in the top ten in individual contests and, on three occasions, achieved 1st place.
My contest profile is https://www.codechef.com/users/wmoise.
