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11270
The Uncountable Ways
Easy
11271
Sum of squares Cnk
Very easy
11272
Anne's game
Very easy
11273
Kitty's Calculations on a Tree
Easy
11274
Max or Min
Medium
11275
Level Up
11277
Cycle String?
11278
Life Transfer
11279
Game on a Tree
11280
Projection
11281
Tree Permutations
11282
Absolute Game
Easy
11283
Graph and Cycles
11284
Stranded Robot
Easy
11285
Find XOR on a segment
Very easy
11286
Twice bigger
Easy
11287
Peak Element
11288
Pair the people
Easy
11289
Labelled graphs
Very easy
11290
Card game
11291
Distributing the Money
Hard
11292
Spiderman in Baku
Medium
11293
Koba and banana tree
Easy
11294
Perfect match
Hard
11295
2-variable Function
Medium
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