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Problems
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Problems

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Difficulty
Sort by
3599
Number Sorting
Hard
3618
Hit and Blow
Hard
3649
Disorder
Very easy
3652
How many prefixes?
Very easy
3656
Effectiveness of Permutations
Easy
3675
Chain
Very hard
3684
Report 1
Very hard
3686
How many are good?
Medium
3688
Simple coincidence
Hard
3696
Planet
Hard
3699
Placement of Rooks
Medium
3752
Hyperactive Girl
Hard
3765
Inside Circle
Easy
3771
Generic Poker
Very hard
3864
Incredible! Impossible!
Very hard
3865
Jackpot
Hard
3885
Sequence Sum
Easy
3906
Initialization of an array
Hard
3946
Hunt for Treasure!
Very hard
3973
Double Dealing
Medium
4015
Tichu
Hard
4026
Edge Case
Medium
4032
Key Insight
Hard
4066
Spirograph
Medium
4078
Drawing Marbles
Easy
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