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Problems
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Problems

Topics
Difficulty
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376
The Computer Game
Very hard
377
The Bad Number
Easy
378
Mysterious Note
379
Fault protection
Easy
380
Clash of the Titans
Very easy
388
Transformation
389
Decomposition into simple addends
Medium
390
Anagrams
Medium
391
Calculator
Very easy
392
Gifts
Very easy
393
Reform of the English Language
Hard
394
Purchase on credit
Very easy
395
"Prime" numbers
Very easy
396
Rain
Very easy
397
Sum
Very hard
398
Cake for Sergei
Very easy
399
Bracket Sequences
Very easy
400
The Travels of the Gnomes
Easy
401
Space Station Docking Bay Configuration
Very easy
402
Complete Tree Labeling
Medium
403
Agent
Easy
404
Construction
Very easy
405
Crazy Frog
Very easy
406
Directions
Medium
407
Exchange
Very easy
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