# Minimum-length cabling to connect computer-screen information

The management of a zoo wishes to place a computer-screen information system at the Entrance (E), and all the enclosures like the Tigers' enclosure (T), the Wolves' enclosure (W), the Lions' enclosure (L) and so on. These need to be connected to the main computer at the Entrance. For obvious reasons, the cables must run along the roads. Find the minimum-length cabling.

The length of each road (in meters) is given in the table below.

Road | Length

EL | 170

EP | 350

EG | 240

LW | 530

LT | 290

LP | 330

GP | 240

GW | 600

TW | 250

TP | 220

PW | 240

Consider that the cabling between computer-screen information system and main computer at the entrance is negligible.

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#### Solution Preview

There could be many ways to look at this problem, depending upon the network configuration to connect computer-screen information systems at different locations.

1. If we choose to connect these computer systems at each location using ring topology, this problem reduces down to finding a minimum length circular path connecting all the locations - each location appearing exactly once in this ...

#### Solution Summary

Solution is more like a guidance and considers ring topology as well as tree topology to connect computer-screen information systems.