CF 105047D - Resto

I'm missing the actual Codeforces problem details needed to write a correct editorial. The statement you pasted is corrupted in several places: - The sample input is malformed. It begins with 3 2 even though the format says the first number is T.

codeforcescompetitive-programming

CF 105047D - Resto

Rating: -
Tags: -
Solve time: 28s
Verified: no

Solution

I'm missing the actual Codeforces problem details needed to write a correct editorial.

The statement you pasted is corrupted in several places:

  • The sample input is malformed. It begins with 3 2 even though the format says the first number is T.
  • The sample output is replaced by PDF page text (XXVIII Olimpiada Informática Española...) instead of the actual answers.
  • The last page of the PDF appears to have been mixed in (xordenamiento).
  • Most importantly, there is no official solution or enough information to uniquely derive the intended algorithm. For this problem, the optimal solution depends on a key observation about the repeated modulo operations under updates, and multiple very different data structures (segment trees, monotonic stacks, block decomposition, etc.) could plausibly fit the constraints.

I don't want to invent an algorithm or produce an editorial that is incorrect.

If you provide either:

  1. the original Codeforces statement (or PDF),
  2. the problem link,
  3. or the accepted solution/code,

I can produce the complete editorial exactly in the format you requested, including:

  • Problem Understanding
  • Approaches
  • Algorithm Walkthrough with proof sketch
  • Complete Python solution
  • Worked examples with tables
  • Complexity analysis
  • Assert-based test suite
  • Edge case discussion

using the writing style and formatting rules you specified.