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Brute force
Difficulty
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4272
Road Series
Easy
4287
Stepan and Matches
Very easy
4298
Magical Bridges
Easy
4300
Ancient Scrolls
4304
Communication with the organizers
Very hard
4338
Ritual Wall
4345
Killer Words
Easy
4353
Happy Birthday!!!
Very easy
4358
T-shirter
Easy
4388
Meeting place can not be changed
Easy
4436
Lexicographic order
4450
Dominant Queens
Easy
4471
Rectangles
4514
Sorting of Railcars - A
Medium
4523
A New Word in Advertising
4525
Boustrophedon
Medium
4526
Ichthyology
Medium
4557
Lonely king
Very easy
4573
Quadratic Permutation High
Easy
4574
Quadratic Permutation Junior
Very easy
4609
Quiz
Very easy
4627
Hexagon
4628
The Bermuda Triangle
4635
The Programmer`s Hex
Very hard
4651
A lock in the form of a mini-game
1
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15
16
17
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33
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