Competition Programming Resources

Online Judges:

• Topcoder
• USACO
• Project Euler
• SPOJ
• Codechef
• Codeforces
• UVA
• Google Code Jam Archive

Tutorial collections:

• Topcoder Algorithm Tutorials
• e-maxx (One of the best collections available - but it is in Russian, so use Google Translate on the site)
• My Tutorials :)

Code Repositories:

• Zobayer's Code Repository
• Igor's Code Repository

Problem Sets:

• ICPC Programming Contest Syllabus
• uHunt
• Winter Coding Camp 2012

Programming Contest Calendar:

• OPC Calendar

Problem Set Analysis:

• Topcoder Match Editorial Archive
• Codechef Editorials

Blogs:

• Vexorian's Blog
• Fushar's Blog
• Petr's Blog
• ACMSolver

Motivational and Advice:

• Teen mathletes do battle at algorithm olympics - Gennady Korotkevich(tourist)
• Target in six steps - Petr Mitrichev
• Nikhil Garg's blog posts - 2010 ICPC Regionals Victory, 2011 ICPC Regionals Victory, How to be a good programmer
• Interview with Rudradev Basak