Codeforces Round

Today I took the div3 round and here is a video where I explain how to solve the problem E from this contest, a problem where knowledge about making strings and arrays palindrome is essential.
E: codeforces.com...
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[@gauravmanwani9148]

what makes an unordered map get hacked more easily than map? At 5:40

[@stefdasca]

I think the reasoning is explained very well in this blog here: codeforces.com/blog/entry/62393

[@ravishekharyadav7701]

problem F please

[@stefdasca]

I will probably do a broader tutorial on bridges and biconnected components at some point