Today I participated in [contest:1726]. At first glance, this was really a nice contest, and even though some problems were a bit too technical, they did contain some certain ideas (and as to whether these ideas were cool and beautiful, I guess there's no accounting for taste). However, the tests in the harder problems weren't strong enough. For example,↵
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* I easily uphacked [user:nikgaevoy,2022-09-06]'s solution [submission:171150224] of [problem:1726F], where he printed negative numbers on tests as little as with $n=2$; (btw, congrats [user:nikgaevoy,2022-09-06] on becoming an IGM!)↵
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* [user:heno239,2022-09-06] uphacked [user:turmax,2022-09-06]'s solution [submission:171126442] of [problem:1726G] with also a tiny test; (btw, congrats [user:turmax,2022-09-06] on becoming an LGM!)↵
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Nevertheless, I screencast the solving process (with my struggling to solve [problem:1726F]) and explanation of problems A–F, and I am now uploading it to YouTube, the video should appear [here](https://youtu.be/eX9uMDs6Vbg) in several hours. Please leave your feedback (and other cases of high- or low-quality testing in this contest) in the comments!↵
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**UPD:** While I was sleeping, two news have happened:↵
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1. The [video](https://youtu.be/eX9uMDs6Vbg) uploaded successfully.↵
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2. The round became unrated because of the problem F, from which I suffered a lot during the contest. (By the way, the suffering had nothing to do with the quality of the tests in this problem or with this issue, I just made stupid bugs). You may read [this](https://codeforces.net/blog/entry/106697) and [this](https://codeforces.net/blog/entry/106700) blog to get to know the incident.
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* I easily uphacked [user:nikgaevoy,2022-09-06]'s solution [submission:171150224] of [problem:1726F], where he printed negative numbers on tests as little as with $n=2$; (btw, congrats [user:nikgaevoy,2022-09-06] on becoming an IGM!)↵
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* [user:heno239,2022-09-06] uphacked [user:turmax,2022-09-06]'s solution [submission:171126442] of [problem:1726G] with also a tiny test; (btw, congrats [user:turmax,2022-09-06] on becoming an LGM!)↵
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Nevertheless, I screencast the solving process (with my struggling to solve [problem:1726F]) and explanation of problems A–F, and I am now uploading it to YouTube, the video should appear [here](https://youtu.be/eX9uMDs6Vbg) in several hours. Please leave your feedback (and other cases of high- or low-quality testing in this contest) in the comments!↵
↵
**UPD:** While I was sleeping, two news have happened:↵
↵
1. The [video](https://youtu.be/eX9uMDs6Vbg) uploaded successfully.↵
↵
2. The round became unrated because of the problem F, from which I suffered a lot during the contest. (By the way, the suffering had nothing to do with the quality of the tests in this problem or with this issue, I just made stupid bugs). You may read [this](https://codeforces.net/blog/entry/106697) and [this](https://codeforces.net/blog/entry/106700) blog to get to know the incident.
