IT cell active 
I dont think I agree with you. The reason is unacademy is although The Parent Company still Codechef enjoys freedoms like discussion on various topics, free access to lot of resources such as problems, blogs, including platform for sharing resources for free (eg:the learning link that you provided for free learning). It totally depends upon the user from where they want to learn. Although the platform has indeed degraded given the lineancy shown towards plagirism. It really drives people away from giving these contests. Still i enjoy problems on this platform. The problems are really “Algorithmic” as opposite to CF where its mostly based on Math, intuition, pattern or Ad-Hoc. Again this is my personal opinion different people may love different platform,
Thank You
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