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4442
New Year's Garland
Easy
4447
Horses walk in turn
Easy
4448
Tour Field
Very easy
4450
Dominant Queens
Easy
4451
Game with Balls
4454
Right only
Very easy
4459
The least common multiple
Easy
4462
Strange Joseph and The Knights of Round Table
4465
The game in dots
Hard
4467
Kryptex
Very easy
4468
Mickey Mouse's Friends
Very easy
4475
Clock
Very easy
4502
Summer Internship
Very easy
4503
Well, it's a very simple task.
Very easy
4509
Vasya and sets
Very easy
4514
Sorting of Railcars - A
Medium
4521
Wikipedia
Easy
4524
Improve RLE
Easy
4525
Boustrophedon
Medium
4527
Simple prefix compression
4531
HTHL
Very easy
4532
TEX 2 Unicode
Very easy
4540
Hanoi Tower
4541
Zhytomyr 1128
Easy
4542
Vinnytsia Programmers' Amusements
Medium
1
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