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Problems

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Difficulty
Sort by
383
Histogram
Medium
693
Minimum in the Stack
Very easy
853
Sereja and Array
Very easy
1586
The postfix record
3013
Magic Parenthesis
Medium
3042
Convex Hull (Queries)
Hard
4033
Tram
Very easy
4259
Minimum in the stack
Very easy
4433
Verification of PDP
Very easy
4434
Encryption
Very easy
5060
Reverse Polish notation
Very easy
5137
Monobilliards
Very easy
5398
Yaroslavl
Very easy
7314
Longest Valid Parentheses
Easy
8546
Find the sum
Easy
8564
Tower
Very easy
9035
Class MinStack
Easy
10528
Modern Art 2
Easy
10762
Soldiers Row
Easy
11720
Jim and the Skyscrapers
Medium