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Difficulty
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3527
DNA Subsequences
Very easy
3531
Happy day?
Medium
3533
Master of "Wormix"
Easy
3539
Enemy Towers
Medium
3541
Alien's Counting
Hard
3545
Psychic Accelerator
Very hard
3548
Ropeway
Very easy
3549
How to Create a Good Game
Very easy
3550
Cruel Bingo
Very hard
3566
Play in Basic
Very hard
3568
Three-way Branch
Very hard
3571
Bracelets
Easy
3575
Lightning Lessons
Easy
3580
Tree Count
Hard
3584
A Famous Stone Collector
Easy
3585
A Famous Equation
Hard
3594
Butterfly
Hard
3598
Mysterious Maze
Hard
3599
Number Sorting
Hard
3612
Marathon
Hard
3613
Olympic luggage
Very easy
3624
Repeated Subsequences
Easy
3628
Brackets Sequence
Easy
3649
Disorder
Very easy
3652
How many prefixes?
Very easy
1
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