Problems A-G have been created by isaf27. The idea of the problem A has been offered by peltorator.

The problem H has been created by cdkrot.

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Jury's solution: 44522356

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Jury's solution: 44522430 Tutorial is loading...

Jury's solution: 44522470 Tutorial is loading...

Jury's solution: 44522488 Tutorial is loading...

Jury's solution: 44522506 Tutorial is loading...

Jury's solution: 44522527 Tutorial is loading...

Jury's solution: 44522542Solution by Endagorion: 44519413 (maximal spanning tree)

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Jury's solution: 44522571