IOI

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• Hieroglyphs
• Message
• Mosaic
• Nile

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• Beech Tree
• Closing Time
• Longest Trip
• Overtaking

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• Catfish Farm
• Digital Circuit
• Insects
• Prisoner Challenge

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• Candies
• DNA
• Dungeons
• Keys

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• Biscuits
• Comparing Plants
• Connecting Supertrees
• Mushrooms

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• Arranging Shoes
• Rectangles
• Sequence (Line)
• Sky Walking

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• Combo
• Highway Tolls
• Mechanical Doll
• Meetings

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• Books
• Nowruz
• Prize
• Simurgh

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• Aliens
• Messy
• Molecules
• Paint

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• Boxes
• Horses
• Scales
• Sorting

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• Friend
• Game
• Gondola
• Holiday

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• Art Class
• Cave
• Dreaming
• Game

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• Crayfish Scrivener
• Ideal City
• Jousting Tournament
• Last Supper

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• Crocodile
• Dancing Elephants
• Garden
• Hottest (Hot)

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• Cluedo
• Hotter Colder
• Language
• Memory

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• Archery
• Garage
• Hiring
• Mecho

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• Fish
• Islands
• Linear Garden
• Pyramid Base

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• Aliens
• Flood
• Miners
• Pairs

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• Beans (Mexicane\ n
• Deciphering the Mayan Writing
• Forbidden Patterns (Writing)
• Pyramid

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• Birthday
• Garden (Largest Empty Rectangle)
• Mean Sequence
• Mountain

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• Artemis
• Empodia
• Farmer
• Hermes

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• Amazing (Maze Exploration)
• Boundary (Convex Hull)
• Comparing Substrings
• Reverse

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• Batch Scheduling
• Bus Terminals
• Frog
• XOR

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• Double Crypt
• Ioiwari
• Mobile Phones
• Score

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• Car Parking
• Palindrome
• Post Office
• Walls

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• Code (Gray Codes)
• Flower Shop
• Road Network (Tree Median)

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• Camelot
• Contact
• Picture
• Polygon

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• Mars Explorer
• Sentiment (Expression Evaluation)
• The Buses

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• Magic Squares
• Network of Schools
• Sorting a Three-Valued Sequence

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• Packing Bits
• Shopping Offers
• Wires

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• The Circle
• The Clock
• The Triangle

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• Day 1, Task 1: The Castle
• Day 1, Task 2: The Primes
• Day 2, Task 1: Operations
• Day 2, Task 2: The School Bus

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• Islands
• Points (Convex Hull)
• Teletext

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• Island
• Mangoes
• Matrix Game

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• Festival Decoration
• Map Labelling
• Subsets

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• Mobile
• Packing Rectangles
• Strings