• Colorful Eggs
• Divisors
• Extreme Divisors Let us define the functions d(n) and σ(n) as
• Fun with Strings
• Great Numbers
• Highest Paid Toll
• Inhabitants
• Just Prune The List
• Palindrome Numbers
• Mazes in Higher Dimensions
• Cyber cafe
• Unbreakable Floor
• Find the project
• Strange Research
• Circle Strafing
• Prefix Codes
• Highway Monitor
• Volume Measurement
• All Integer Average
• Overlaying Maps
• Reverse Assignment
• Zeros and Ones
• Count the Points Inside
• Permutation Primes
• The Fairy Tale of ICPC
• Guinea Rats
• Harmonic Mean
• Robots inside the Labyrinth
• Invite Your Friends
• Understanding Recursion
• Matrissor
• Altitude Triangle
• The Ultimate Bamboo Eater
• Counting Triangles
• Unequalled Consumption
• Declaration of Content
• Laserbox
• Bowlstack
• Pesky Heroes
• Reduced ID Numbers
• Tantrix
• Guardian of Decency
• Up the Stairs
• Mobile Casanova
• Potentiometers
• Collecting Marbles
• Expression
• The Luncheon
• Counting Zeroes
• Multiplication
• Paint the Roads
• Protecting Zonk
• Battle of the Triangle
• Sudoku
• The SetStack Computer
• Pie
• Ticket to Ride
• The Bookcase
• Printer Queue
• Prime Path
• Lineland’s Airport
• Leonardo’s Notebook
• A Rod in a Path
• Bigger is Better
• Collapse!!
• Digit Puzzle
• Extraordinarily Tired Students
• Fairies’ Defence
• Gargoyle
• Hidden Music Score
• Iceman
• Overlapping Squares
• Bachelor Arithmetic
• Nested Squares
• Dumb Grocer
• ACM Puzzles
• Inspector’s Dilemma
• The Bells are Ringing
• Photographic Tour
• You are around me ...
• Infinite Matrix
• Magnetic Train Tracks
• Assemble
• March of the Penguins
• Containers
• Youth Hostel Dorm
• Escape from Enemy Territory
• Flight Safety
• Summits
• Obfuscation
• Tower Parking
• Walk
• Find the Format String
• Switch Bulbs
• Schedule of a Married Man
• Puzzles of Triangles
• Chemical Plant
• Clicking Checkboxes
• Magic Rings
• Line Chart