Well i already solved 400 problems but was not able to reach at pupil. now should i solve from a20j ladder many coders say that it wouldnt be helpful nowdays. And also few high profile coder recommend to solve from a2oj. what should i do how should i solve? which startegy should i follow? Definetely target is not for pupil. I highly appreciate your time and consideration to me, wish you all will be happy with cp career, and i dont know should i quite it or not! sorry for using tourist's photo without taking the permission from him.
You've solved 400 problems but nearly all of them are rated 1100 or less. You really need to solve harder problems and A2OJ is a great place to find them.