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AVAILABLE EXERCISES:
Exercise 9
Bitwise operations (bit-ops)
Exercise 8
Frontend
Exercise 7
Data Structures
Exercise 6
SQL
Exercise 5
Coding skills
Exercise 4
Algorithmic skills
Exercise 3
2017 Contest
Exercise 2
2016 Contest
Exercise 1
2015 Contest
Exercise 1

2015 Contest

Tasks:

easy

LongestPassword

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Given a string containing words, find the longest word that satisfies specific conditions.
medium

FloodDepth

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Find the maximum depth of water in mountains after a huge rainfall.
hard

SlalomSkiing

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Given a sequence, find the longest subsequence that can be decomposed into at most three monotonic parts.