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Problems

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Difficulty
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11526
World of Darkraft - 2
Very hard
11527
Multidimensional Expectations
Hard
11528
Measure trunk
Hard
11529
Mexor
Hard
11530
Superhero
Medium
11531
Interesting places
Hard
11532
Awkward situation
Medium
11533
Keech, Poch and the barn
Very hard
11534
I'll never leave you
Medium
11535
Presents
Medium
11536
Conveyer
Very hard
11537
Investigation
Hard
11538
Arithmetic progression
Very hard
11539
Name generator
Medium
11540
Story
Very hard
11541
Contest preparation
Medium
11542
Game of Thrones
Medium
11543
Competitive Programmers
Very hard
11544
Boring tree queries
Very hard
11545
Another easy string problem
Very hard
11546
From XOR with love
Very hard
11547
Hard choice
Hard
11548
Determinant of boolean matrix
Very hard
11549
Trapping Rain Water
Easy
11550
x1+...+xk = n
Easy
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