ICYMI: Here’s our Recap of CodeChef’s July Long Challenge

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After the really interesting and intense June Lunchtime, we returned with the Long Challenge contest of the month. Keep reading to get our detailed breakdown of the contest.

Beginning with Div A: the 7-star ACRush finished at the top of the leaderboard. ACRush, making a Long Challenge appearance after a gap of 3 months, managed to increase his rating by 128 points to ultimately end with a rating of 2985. He currently holds the overall rank 1 in China, and is globally ranked as the third best player. Close on ACRush’s heels was andres96. Even andres96 made a comeback on the platform after a long time, almost a year. And what a great one, indeed! andres96 bumped his rating up by 146 points, and jumped from being a 5-star to now holding the 6-star tag. The contest featured remarkably good performance from China and India in Div A, with 11 participants each in the Top 30.

Another participant to shine out in the Div A was rumblefool, from India, who ranked 4th in the contest and managed to raise his rating by 134 points. The others to finish in the distinguished Top 5 were romawhite and Oleg, ranking 3 and 5, respectively.

Over in Div B, loopfree from China secured the top spot. Having started competing on CodeChef only this year, loopfree increased her rating by 208 points and jumped from Div B to Div A. Snatching the 2nd spot in Div B was marco_l_t. This was marco_l_t’s first contest on CodeChef, and he grew his rating by the maximum possible value: 275 points. The other participants to make it to the Top 5 in Div B were alina_alina, spookywooky, and dbh_, occupying the 3rd, 4th and 5th position, respectively.

The contest bore particularly good fruits for school students: In Div A, 12 out of Top 30 were school students, while the number for Div B within the same bracket was 9. Meanwhile, minamoto from Div A (Rank 19), and loopfree (Rank 1) and alina_alina (Rank 3) from Div B were some of the female programmers that really stood out in the contest.

Overall, 320 participants migrated from Div B to Div A, including 15 school students. While simultaneously, 103 coders slipped down to Div B from Div A.

Finally, coming to problems: the problem to get first overall successful submission in the contest was CHFM from njha1999 in Div A, just 4 minutes into the contest. In Div B, too, CHFM was first problem to receive a successful submission, solved by apower2 in the 5th minute after the start. The problem to be cracked last in both the division was LVMFFN, solved by ACRush on the second day in Div A, while in Div B, it was solved by foreverlasting on the sixth day.

As we conclude this recap, we express our immense gratitude to our July Long Challenge problem setting panel:


Testers: Alipasha (alipasha132), Kasra Mazaheri (kmaaszraa)

Editorialist: Anand Jaisingh (anand20)

Statement Verifier: Jakub Safin (xellos0)


  • Russian Translator: Fedor Korobeinikov (gomelfk)

  • Vietnamese Translator: Team VNOI (songuku95)

  • Bengali Translator: Mohammad Solaiman (solaimanope)

  • Hindi Translator: Akash Srivastava (devils_code)

  • Mandarin Translator: Gedi Zheng (stzgd)

Ultimately, a huge thanks to our admin Alei Reyes (alei) whose help ensured that we were able to pull the contest off effortlessly.

Do let us know your thoughts and opinions on the July Long Challenge in the comments below. Plus, don’t forget to practice. There are highly engaging contests scheduled this week and the next. Until next time, keep coding!

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