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Problems

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Difficulty
Sort by
6199
Oddities
6200
Ternarian Weights
6202
Shotcube
Very hard
6208
Even Up Solitaire
6211
Collision Detection
Medium
6214
Paint Me
6216
Reverse Nonogram
Very easy
6219
Walls
Easy
6233
Fenwick Tree
Very easy
6239
Honey Bees
Very easy
6240
Repeating Decimals
Easy
6241
Solutions of Cubic Equation
Hard
6242
Multiplication in a Dihedral Group
Easy
6244
Sharkovski's Ordering
Very easy
6246
More Fun in Bicol
Very hard
6253
Virus Replication
Very easy
6254
Timebomb
Very easy
6255
Erase Securely
6260
Arrangement of Contest
Very easy
6261
Ballot Analyzing Device
Very easy
6268
Intellectual Property
Very hard
6275
Doubling
Very easy
6279
Number of days in a month
Very easy
6281
Bank
Easy
6282
Bet
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