Problems that I authored so far

Revision en4, by TheScrasse, 2024-03-21 02:55:23

Hi everyone,

after Codeforces Round 889 (Div. 1), maybe it's time to collect all my problems here. For now, I've mainly invented easy-ish problems. I wish to invent a very hard problem sooner or later :)

Update after Pinely Round 3

I'm putting the story of each problem under spoiler, because it may contain parts of the solution. I invented many problems by just trying random setups until I came up with something solvable, but some problems (especially the harder ones, for example 1854D - Майкл и отель) may have more interesting stories.

Fun facts:

Authored (roughly sorted by difficulty)

preoii_vm - Aggiornamento della macchina virtuale

Story

cc PATHPAR - Path Parity

Story

cc XORPERM - Xor Permutation

1909A - Различные кнопки

Story

1485A - Прибавляй и дели

Story

cc SUMPRODSEG - Sum Product Segments

Story

cc MXMODSUM - Maximum Pairwise Modular Sum

Story

1855B - Наибольший интервал делителей

Story

terry 2023/3 - Dipingere i muri

Story

1485B - Замена и возрастание

Story

1928B - Уравняй

Story

cc SEGFAULT - Segmentation Fault

Story

cc SUBARRAYLEN - Subarrays with length

Story

terry 2023/4 - Viaggio intrigante

Story

1909B - Сделать почти равными по модулю

Story

1909C - Тяжелые интервалы

Story

cc ANTIKNAPSACK - Anti-knapsack

Story

cc THROWTAKE - Throw and Take

Story

ois_fibonacci - Fibonacci Sequences

Story

1854A2 - Dual (сложная версия)

Story

1909D - Разделить и плюс K

Story

1485D - Делители и степенные разности

Story

1854B - Заработать или разблокировать

Story

preoii_armadio - Evasione dall'armadio

Story

UOI 2023/7 - Add Again

Story

1485E - Передвижения и замены

Story

1485F - Копия или префиксная сумма

Story

1909E - Несколько ламп

Story

cc NDANDANDOR - Non-decreasing AND and OR

Story

1854C - Ожидаемое разрушение

Story

preoii_allenamento - Allenamento su ChinaForces

Story

ois_aliga - A Day in Olbia

Story

cc PERMSEGMENTS - Permutation Segments

Story

1909F2 - Небольшая задачка про перестановки (сложная версия)

Story

1854D - Майкл и отель

Story

1909G - Лемма о накачке

Story

1909I - Короткая задача о перестановке

Story

1909H - Сортировка параллельными обменами

Story

Partially authored (roughly sorted by difficulty)

1654A - Наиболее вкусный торт

Story

preoii_triplets - Comune di Alleib

Story

1485C - Деление и остаток

Story

arc147_c - Min Diff Sum

Story

preoii_permutazione2 - Trova la permutazione

Story

preoii_sets - Insiemi nell'armadio

Story

1762E - Сумма на дереве

Story

preoii_statue - Galleria d'arte

Story

UOI 2023/4 - Array and prefix sums

Story

1654H - Three Minimums

Story
Tags author, problemsetting

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en6 English TheScrasse 2024-03-21 03:09:09 343
en5 English TheScrasse 2024-03-21 02:58:07 10 (published)
en4 English TheScrasse 2024-03-21 02:55:23 3550 (saved to drafts)
en3 English TheScrasse 2023-07-30 17:17:11 1 Tiny change: 'e up with [problem:1854C], and I re' -> 'e up with , and I re'
en2 English TheScrasse 2023-07-30 17:15:29 1
en1 English TheScrasse 2023-07-30 17:15:16 16359 Initial revision (published)