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Difficulty
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203
Вгадайте перестановку
Very hard
204
Вороги та шаблі
Very hard
205
Test
Very easy
206
Walk
Very easy
207
OSU!
Easy
208
It's not Time for Games
Easy
209
Language issues
Medium
210
Exam
Medium
211
Debts
Very easy
212
First books
Easy
213
Library
Very easy
214
Books
Easy
215
Book rental
Medium
216
What books can lead to...
Easy
222
An Array and Several More Arrays
Hard
223
An Array of Coins and Weighing Requests
Very hard
224
An Array and Range Additions
Hard
225
An Array and Partial Sums
Very hard
226
An Array and Medians of Subarrays
Hard
227
An Array of Characters and Almost Palindromes
Very hard
228
An Array and Addition Again
Hard
229
An Array and XOR
Hard
230
Moving Dots
Hard
231
Mex Permutations
Hard
232
Boring Problem
Very hard
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