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Difficulty
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6251
Number Trick
Easy
6267
Heavy Chain Clusterization
Very hard
6268
Intellectual Property
Very hard
6274
Division of the Treasure
Very easy
6282
Bet
Very easy
6284
Illness
Easy
6298
Hard Life
Very hard
6301
Kickdown
Medium
6312
Findword
Hard
6319
Calculator
Very hard
6320
Neighbors
Easy
6362
Maharaja
Very easy
6383
Letter Cubes
Very easy
6384
Digit Sum
Medium
6387
Islands in the Data Stream
Easy
6401
IQ Test
Medium
6402
Social Advertising
Medium
6408
Cracking the Safe
Medium
6440
Degree Of Number's Eccentricity
Easy
6452
Patterns
Very easy
6463
Remarkable Substrings
Very hard
6526
The Swapping Game
Very easy
6530
Contest Hall Preparation
Easy
6532
Absurd prices
Easy
6546
Magic Star
Medium
1
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