There are dozens of online judges and it's not a mission to solve all the problems :p.
But we will pick the problems which are necessary for our training.
Besides, we will try to participate in as many contests as possible.
Till now we have this list (In no particular order):
Have eyes on these for regular contests:
For some notable contests in Bangladesh:
For training: [ There are many. But these help a lot]
For a lot of standard problems for training: