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Can anyone give a good solution in c++ with a clear explanation to this problem

By noobieeee_, history, 5 years ago, In English

this is the link to the problem

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5 years ago, # |
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My code https://ideone.com/QSR6CH . It is a simple bfs but you want to have lenght divides by 3. I have vertices v,state (for my code it is 3*v+state vertice) i search shortest path from s to v which whave the same remainder as state.

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