Four people start on one side to cross a rickety bridge. 17 minutes to cross them all. Nighttime, one torch. The bridge can only hold two persons. Anyone crossing must carry a torch. The torch must be carried, not flung. Person 1 crosses the bridge in one minute, person 2 in two, person 3 in five, and person 4 in ten. Pairs must walk at the slower person's pace. Specify a problem-solving algorithm.
Four people start on one side to cross a rickety bridge. 17 minutes to cross them all. Nighttime, one torch. The bridge can only hold two persons. Anyone crossing must carry a torch. The torch must be carried, not flung. Person 1 crosses the bridge in one minute, person 2 in two, person 3 in five, and person 4 in ten. Pairs must walk at the slower person's pace. Specify a problem-solving algorithm.
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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Four people start on one side to cross a rickety bridge. 17 minutes to cross them all. Nighttime, one torch. The bridge can only hold two persons. Anyone crossing must carry a torch. The torch must be carried, not flung. Person 1 crosses the bridge in one minute, person 2 in two, person 3 in five, and person 4 in ten. Pairs must walk at the slower person's pace. Specify a problem-solving
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