Ghost Chase

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Chef is collecting special ingredients in a cave. The cave has $N$ chambers and $N-1$ passageways forming a tree. In other words, it is possible to move from one chamber to any other chamber using the passageways. Each passageway is of equal length and can be traversed in both directions. At $0$-th second, Chef is at chamber $A_j$. At the start of each second, he can choose to either stay in the

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L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

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L5 Full solution

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solution.cppC++17

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