Look at the directed graph in the file Quiz TestGraph on Brightspace. The vertices a, b, c, d, e, f, g, h represent locations and the edges represent the roads (all one- way) which connect them. The edge cd, shown in red, is a toll road. How many simple paths are there which start at f and end at h, and avoid the toll road. (A simple path has no repeated vertices). 8 10 O 11

Look at the directed graph in the file Quiz TestGraph on Brightspace. The vertices a, b, c, d, e, f, g, h represent locations and the edges represent the roads (all one- way) which connect them. The edge cd, shown in red, is a toll road. How many simple paths are there which start at f and end at h, and avoid the toll road. (A simple path has no repeated vertices). 8 10 O 11

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Polynomial Time

The problems for which the deterministic polynomial-time algorithm exists belong to the complexity class (p) and it is central in the field of computational complexity theory. According to Cobham’s thesis, polynomial time is a synonym for “feasible”, “fast”, and “efficient”.

Question

Look at the directed graph in the file Quiz TestGraph on Brightspace. The vertices a,
b, c, d, e, f, g, h represent locations and the edges represent the roads (all one-
way) which connect them. The edge cd, shown in red, is a toll road.
How many simple paths are there which start at f and end at h, and avoid the toll
road. (A simple path has no repeated vertices).
8
10
O 11

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