Hello,
One thing I like about AtCoder is the post contest videos. For example: https://www.youtube.com/watch?v=nXyz3oUEidc.
Unfortunately they are in Japanese. I think they would have more impact if they were in English.
What do you think?
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Does anyone has a proof of the formula for problem C, the time T that the two flames meet is expressed as follows:
Thanks
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