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1. The set of questions.
2. Along with custom contest , if we can connect over friends on call (for that period of time), just like discord ..

1. the level of competition, the urge to gain higher rank and the dream to get red one day makes it very interesting
2. unrated contests like atcoder should be there. sometimes, we can't fully participate in a contest due to any reason but we also want to participate. it happened with me in last div. 3, I had exam in morning but I wanted to participate so I couldn't give the best. Having unrated contests will be very helpful in these situations.

1. Problem set is pretty much the best[problems involves thinking more]
2. Dark Mode + feature of checking whom have added friend to me + Unrated register in contest..

1.Codeforces features an intuitive and user-friendly interface.

2.Its offers a diverse range of high-quality problems that cover a wide array of algorithms, data structures, and problem-solving strategies.

3.Its hosts frequent coding contests of varying difficulty levels.

4.The strong desire to climb the higher ranks and the dream of achieving the glamorous red status make things super exciting at Codeforces!