Recently I came across with the topcoder problem 'Cassette'.However,I can only find the [editorial](https://www.topcoder.com/tc?module=Static&d1=match_editorials&d2=srm125) but not the [problem statement](https://community.topcoder.com/stat?c=problem_statement&pm=1174&rd=4415).It shows that "Problem Statement not available".I have also found that some other really old topcoder problems don't have available problem statements either,like [this one](https://community.topcoder.com/stat?c=problem_statement&pm=1127&rd=4380).↵
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So is there an archived version or someone still remembers the problem statement?I think it may be a well-known one:D.I will be very grateful for your help!↵
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UPD:Also I notice that SRMs below 144 have no way to submit.But there exists a [match archive list](https://www.topcoder.com/tc?&sc=12&sd=asc&module=MatchList&nr=50) which shows early SRMs and some of them have statements,like [this one](https://community.topcoder.com/stat?c=problem_statement&pm=93&rd=3009) and [this one](https://community.topcoder.com/stat?c=problem_statement&pm=54&rd=3000).But unfortunately,I can't find the editorial both on [this link](https://www.topcoder.com/thrive/tracks?sortBy=Content%20Publish%20Date&startDate=2001-01-02&tax=SRM%20Editorials&track=Competitive%20Programming)(down to SRM 121,maybe?) and on [this link](https://www.topcoder.com/tc?module=Static&d1=match_editorials&d2=archive)(to SRM 78).
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So is there an archived version or someone still remembers the problem statement?I think it may be a well-known one:D.I will be very grateful for your help!↵
↵
UPD:Also I notice that SRMs below 144 have no way to submit.But there exists a [match archive list](https://www.topcoder.com/tc?&sc=12&sd=asc&module=MatchList&nr=50) which shows early SRMs and some of them have statements,like [this one](https://community.topcoder.com/stat?c=problem_statement&pm=93&rd=3009) and [this one](https://community.topcoder.com/stat?c=problem_statement&pm=54&rd=3000).But unfortunately,I can't find the editorial both on [this link](https://www.topcoder.com/thrive/tracks?sortBy=Content%20Publish%20Date&startDate=2001-01-02&tax=SRM%20Editorials&track=Competitive%20Programming)(down to SRM 121,maybe?) and on [this link](https://www.topcoder.com/tc?module=Static&d1=match_editorials&d2=archive)(to SRM 78).
