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Problems

Topics
Difficulty
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11041
Passwords
Easy
11053
Marriage
Hard
11054
Random tree
Very hard
11055
Game with a tree
Very hard
11056
Festive Sugar Modulus Calculations
Hard
11057
Important scientific number
Medium
11058
Chasing a butterfly
Easy
11059
On a hike!
Medium
11060
Chain Repair
Medium
11061
Snake
Very easy
11062
Conflict of interests
Medium
11063
Math lesson
Very easy
11064
School correspondence
Very easy
11065
Indicator
Very easy
11066
Marathon runner
Very easy
11067
Ksonya and the Olympiad
Very easy
11068
Ksonya and the Alphabet Circle
Very easy
11069
Ksonya and the Two-Color Figure
Easy
11070
Xonya and graph
Hard
11071
Xonya and the Tree
Medium
11072
Cossack Vus and the Secret Letter
Very easy
11073
Kozak Vus and the Magical Boots
Very easy
11074
Cossack Vus and the Railway
Hard
11075
Cossack Vus and the Tree
Medium
11076
Cossack Vus and the Count
Very hard
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