Spoj Websites
spoj.com
SPOJ (Sphere Online Judge) is an online judge system with over 315,000 registered users and over 20000 problems. The solution to problems can be submitted in over 60 languages...
38,573 
$ 348,480.00
a2oj.com
A2 Online Judge (or Virtual Online Contests) is an online judge with hundreds of problems and it helps you to create, run and participate in virtual contests using problems from...
130,035 $ 85,200.00