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Problems

Prefix Sums
Difficulty
Sort by
4504
AND & OR & max on a segment
4517
Delivery
Hard
4555
Chestnut – the Green Symbol of Kyiv
Hard
4653
Two permutations
Hard
4940
Положительные последовательности
Very hard
4979
Camelot
Very hard
5071
Roy and Coin Boxes
Medium
5084
Interval Less Query
Easy
5090
At the intersection
Very easy
5098
Three rings for the elven kings
Very easy
5226
Construction
Easy
5236
Photography
Medium
5242
System Administrator
Easy
5248
Simple lines
Medium
5283
Thaw
Very easy
5294
Sums without a module
Very easy
5331
Thylacine
Very easy
5397
Cafeteria
Medium
5449
Kitten's Task
Very easy
5465
Double subline
Medium
5504
Ministry of Truth
Medium
5619
Stars
5801
Taxi
Very hard
5903
Различные суммы
Easy
5947
Number of pairs
Very hard
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