Editorial for COCI '20 Contest 4 #3 Hop
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
There are several solutions; we describe the shortest one. The idea is: if
Let
We give the edge between
All other edges we give to frog
Using
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