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Difficulty
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6087
A Cycle of Points
Medium
6102
Integral Rectangles
6104
Hierarchical Democracy
6106
Anchored Balloon
Very hard
6137
ABC
Easy
6142
Number of composters
6145
Omicronian Domino
Very hard
6192
Checkers
Very easy
6201
Goldbach`s Conjecture
Very easy
6202
Shotcube
Very hard
6206
4 thought
Easy
6212
Do It Wrong, Get It Right
Easy
6218
Unhappy Numbers
Medium
6248
Permutations
Very easy
6251
Number Trick
Easy
6267
Heavy Chain Clusterization
Very hard
6268
Intellectual Property
Very hard
6274
Division of the Treasure
Very easy
6282
Bet
6283
Codebreaking
6284
Illness
Easy
6298
Hard Life
Very hard
6301
Kickdown
6312
Findword
Hard
6319
Calculator
Very hard
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