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Problems

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Difficulty
Sort by
5487
Ancient Civilizations
Very hard
5503
Sith vs Jedi
Medium
5532
Chocolate
Easy
5612
Five Palindromes
Easy
5615
Mundial
Medium
5616
Algorithm of Professor Ivanov
Very easy
5623
Queens in peaceful positions
Easy
5658
Pirate Chest
Very hard
5724
Queen's Journey 3
Easy
5729
The Queen's Journey 4
Easy
5732
Business Cards
Very easy
5737
Two professors
Very easy
5750
King`s Poker
Medium
5752
Hidden Password
Very easy
5757
Firefighters
Medium
5762
Test
Medium
5776
Phigon
Very hard
5792
Search of Concatenated Strings
Very hard
5859
MaxSum (visit all columns by chess knight)
Medium
5882
Asterisk
Medium
5892
Divisibility by 8
Easy
5894
Triplets
Very easy
5903
Distinct Sums
Easy
5921
Word number
Easy
5922
Divisibility by 2^N
Easy
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