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发帖数: 51 | 1 PROBLEM ONE: TRAINS
Problem: The local commuter railroad services a number of towns in
Kiwiland. Because of monetary concerns, all of the tracks are 'one-way.'
That is, a route from Kaitaia to Invercargill does not imply the existence
of a route from Invercargill to Kaitaia. In fact, even if both of these
routes do happen to exist, they are distinct and are not necessarily the
same distance!
The purpose of this problem is to help the railroad provide its customers
with information about the r |
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