AOAPC I: Beginning Algorithm Contests (Rujia Liu) ::Volume 1. Elementary Problem Solving :: Sorting/Searching 340 - Master-Mind Hints 10420 - List of Conquests 10474 - Where is the Marble? 152 - Tree's a Crowd 299 - Train Swapping 120 - Stacks of Flapjacks 156 - Ananagrams 400 - Unix ls 123 - Searching Quickly 10194 - Football (aka Soccer) 755 - 487--3279 10785 - The Mad Numerologist