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Problems

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Difficulty
Sort by
5841
Pipeline Plans
Easy
5885
Lunar Code 2
5911
Palindrome row
Easy
5937
Knights
Very hard
5940
Palindrome Row (Hard)
Medium
5979
What word?
Easy
5980
How to seat?
Very hard
6086
Same quantity, sum and product
Easy
6162
Fox Observation
6309
Hyperia
Easy
6394
Powers of Pascal
6425
Incognito
6439
Counting Amusing Numbers
Medium
6452
Patterns
Very easy
6585
Eleven
Very easy
6655
Xenospeak
6847
Lego Land
Hard
6947
Boxes
7030
Painting
Hard
7090
Toral Tickets
Medium
7245
Binomial Coefficient
Easy
7305
Golden Brick
Easy
7320
k-th Meander
Medium
7321
Records and Cycles
Easy
7341
Number of rectangles
Easy
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