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Problems

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Difficulty
Sort by
11498
Maximum prime factor
Medium
11512
IOI Selection
Very hard
11524
Substring of a Palindrome
Very hard
11525
Transfer of debts
Easy
11527
Multidimensional Expectations
Hard
11530
Superhero
Medium
11535
Presents
Medium
11538
Arithmetic progression
Very hard
11550
x1+...+xk = n
Easy
11563
Uncrossed Knight's Tour
Very hard
11571
Opportunity Cost
Hard
11602
Two Round Dances
Easy
11606
GCD and LCM
Easy
11609
Finding pairs
Medium
11628
Down the Pyramid
Hard
11630
Fighting Monsters
Hard
11632
Hyper Illuminati
Medium
11635
Kitchen Cable Chaos
Hard
11639
Платіжна картка
Easy
11640
Білі та чорні клітинки
Very easy
11642
Вкладені квадрати
Easy
11646
Кількість пікселів
Very easy
11656
Квадратична функція
Easy
11666
Candies
Medium
11671
Absolute difference
Easy
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