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вернуться в форумMy AC code:
input:
> 3 3
> 1 2 1
> 1 2 1
> 1 3 1
> -1
output:
> No solution.
Why not
> 1 2
There are two roads connecting "1" and "2", so the route could be 1 - 2 - 1, with different road 1 - 2 and 2 -1 "Each sightseeing route is a sequence of road numbers y1, …, yk, k > 2." Oops. Sorry for bothering! "Each sightseeing route is a sequence of road numbers y1, …, yk, k > 2." |
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