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5120 Mysterious numbers - 1 *special constructive algorithms Statement A April Fools Day Contest {171} PROGRAMMING April Fools Day Contest: editorial 1200
233 HQ *special constructive algorithms Statement E April Fools Day Contest 2013 {290} PROGRAMMING April Fools Day Contest 2013: editorial 2700
9565 A + B Strikes Back *special brute force constructive algorithms dsu implementation Statement H April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1700
24229 Chat Order *special binary search constructive algorithms data structures sortings Statement B VK Cup 2016 - Qualification Round 1 {637} PROGRAMMING 1500
5873 Voting for Photos *special constructive algorithms implementation Statement A VK Cup 2016 - Qualification Round 1 {637} PROGRAMMING 1500
2530 Promocodes with Mistakes *special brute force constructive algorithms implementation Statement C VK Cup 2016 - Qualification Round 1 {637} PROGRAMMING 1800
4400 Home Numbers *special constructive algorithms math Statement A VK Cup 2016 - Qualification Round 2 {638} PROGRAMMING 1500
4690 Parliament of Berland *special constructive algorithms Statement A CROC 2016 - Qualification {644} PROGRAMMING 1700
2855 Processing Queries *special constructive algorithms data structures two pointers Statement B CROC 2016 - Qualification {644} PROGRAMMING 2200
4395 Maximum Number *special constructive algorithms greedy Statement C VK Cup 2017 - Wild Card Round 1 {774} PROGRAMMING VK Cup 2017 — Уайлд-кард раунд 1 — Разбор 1200
2122 Lie or Truth *special constructive algorithms sortings Statement D VK Cup 2017 - Wild Card Round 1 {774} PROGRAMMING VK Cup 2017 — Уайлд-кард раунд 1 — Разбор 1500
291 Repairing Of String *special constructive algorithms Statement H VK Cup 2017 - Wild Card Round 1 {774} PROGRAMMING VK Cup 2017 — Уайлд-кард раунд 1 — Разбор 2400
57 Longest Saw *special constructive algorithms Statement H Kotlin Heroes: Episode 1 {1170} PROGRAMMING Kotlin Heroes Editorial
48 Scissors and Tape *special constructive algorithms geometry Statement C CEOI 2019 day 2 online mirror (unrated, IOI format) {1193} PROGRAMMING T
354 Colors *special binary search constructive algorithms interactive Statement A Baltic Olympiad in Informatics 2020, Day 1 (IOI, Unofficial Mirror Contest, Unrated) {1386} PROGRAMMING T
660 Симметричный амфитеатр *special constructive algorithms Statement C VK Cup 2021 - Квалификация (Engine) {1531} PROGRAMMING Разбор квалификационного раунда VK Cup 2021
61 Excursions *special constructive algorithms dfs and similar flows graphs Statement I Kotlin Heroes: Episode 7 {1533} PROGRAMMING Kotlin Heroes 7 — Editorial
98 Biome Map *special constructive algorithms dfs and similar graphs Statement G Kotlin Heroes: Episode 7 {1533} PROGRAMMING Kotlin Heroes 7 — Editorial
372 Sweepstake *special brute force constructive algorithms implementation math Statement D Kotlin Heroes: Episode 8 {1571} PROGRAMMING Kotlin Heroes 8 Editorial
231 Kotlinforces *special constructive algorithms dp Statement F Kotlin Heroes: Episode 8 {1571} PROGRAMMING Kotlin Heroes 8 Editorial
4947 Trivial Conjecture *special constructive algorithms math number theory Statement D April Fools Day Contest 2023 {1812} PROGRAMMING Editorial of April Fools Day Contest 2023
308 Evidence Board *special constructive algorithms dfs and similar graphs trees Statement B XVIII Open Olympiad in Informatics - Final Stage, Day 1 (Unrated, Online Mirror, IOI rules) {1939} PROGRAMMING
30 Draw Polygon Lines *special constructive algorithms dp geometry interactive Statement A XVIII Open Olympiad in Informatics - Final Stage, Day 1 (Unrated, Online Mirror, IOI rules) {1939} PROGRAMMING
177 Almost Certainly *special constructive algorithms data structures sortings Statement D XVIII Open Olympiad in Informatics - Final Stage, Day 2 (Unrated, Online Mirror, IOI rules) {1940} PROGRAMMING
106 Parallel Universes *special constructive algorithms dfs and similar dsu graphs Statement A XVIII Open Olympiad in Informatics - Final Stage, Day 2 (Unrated, Online Mirror, IOI rules) {1940} PROGRAMMING
275 Three Arrays *special constructive algorithms implementation sortings Statement B XVIII Open Olympiad in Informatics - Final Stage, Day 2 (Unrated, Online Mirror, IOI rules) {1940} PROGRAMMING
334 Yet Another Permutation Constructive *special constructive algorithms Statement E Kotlin Heroes: Episode 10 {1958} PROGRAMMING 129483 1900
46 Strong Connectivity Strikes Back *special constructive algorithms graphs Statement A XIX Open Olympiad in Informatics - Final Stage, Day 2 (Unrated, Online Mirror, IOI rules) {2080} PROGRAMMING
514 Minesweeper *special constructive algorithms greedy Statement C Kotlin Heroes: Episode 14 {2199} PROGRAMMING 151783