Art of Programming Contest SE for uva
Attle, S.; Baker, B. Cooperative Learning in a Competitive Environment: Classroom Applications. 2007
Burguillo. Using Game-Theory and Competition-based Learning to Stimulate Student Motivation and Performance. 2010.
Trotman-Handley2008(Programming Contest Strategy)
Beecrowd
Tutorials Point - C++
Tutorials Point - C
Tutorials Point - Java
Strings C++