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problemas-para-competicao-p…/quase-menor-caminho/input/26

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162 B
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19 21
0 18
0 1 1
1 2 1
2 3 1
3 4 1
4 5 1
5 6 1
6 7 1
7 8 1
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0 18 22
0 2 3
2 18 19
0 0