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Problems
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Difficulty
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3968
Square root
Very easy
3969
Diplomas
Very easy
3970
Mutants
Very easy
4031
Joint Venture
Easy
4034
Minimum and Maximum in a tree
Easy
4035
Ice-Cream
4036
Pre-Order Traversal of a Tree
Very easy
4038
Post-Order Traversal of a Tree
Very easy
4042
Медиана объединений
Medium
4046
Mobile
Very hard
4073
Its a Murder!
Very easy
4117
Binary Search
Hard
4142
The Great XOR
Very easy
4147
Двоичное дерево поиска 2
Medium
4150
Сбалансируй-ка!
Easy
4208
Degrees of two
Easy
4211
Gas stations
Very easy
4265
Тайны команды "Отбой"
Easy
4296
Counting 1`s
4360
Solarium for mushrooms
Very easy
4361
Solarium for mushrooms (Hard)
Very easy
4419
Dense forest
Very easy
4420
The root of a cubic equation
Very easy
4421
For Fans of Statistics
Easy
4422
Поезда
Medium
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