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Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 1784 | Old Berland Language | data structures greedy trees | Statement | C | Codeforces Beta Round 37 {37} | PROGRAMMING | Codeforces Beta Round #37 (Tutorial) | 1900 | |
| 12356 | Enemy is weak | data structures trees | Statement | E | Codeforces Beta Round 57 (Div. 2) {61} | PROGRAMMING | Round 57-A | 2100 | |
| 1870 | Big Maximum Sum | data structures dp greedy implementation math trees | Statement | D | Codeforces Beta Round 67 (Div. 2) {75} | PROGRAMMING | 2100 | ||
| 368 | Tree or not Tree | data structures divide and conquer implementation trees | Statement | E | Codeforces Beta Round 88 {117} | PROGRAMMING | 2800 | ||
| 1825 | e-Government | data structures dfs and similar dp strings trees | Statement | E | VK Cup 2012 Round 2 {163} | PROGRAMMING | VK Cup 2012 Round 2 — Разбор | 2800 | |
| 1736 | Beard Graph | data structures ds trees | Statement | D | Codeforces Round 112 (Div. 2) {165} | PROGRAMMING | 2200 | ||
| 1277 | Archaeology | data structures dfs and similar trees | Statement | E | Croc Champ 2012 - Round 2 {176} | PROGRAMMING | 3000 | ||
| 7662 | Fools and Roads | data structures dfs and similar trees | Statement | C | Codeforces Round 121 (Div. 1) {191} | PROGRAMMING | 2100 | ||
| 334 | Alien DNA | data structures ds trees | Statement | E | Codeforces Round 134 (Div. 1) {217} | PROGRAMMING | 2700 | ||
| 488 | Noble Knight's Path | data structures trees | Statement | E | Codeforces Round 140 (Div. 1) {226} | PROGRAMMING | 2900 | ||
| 1996 | Cactus | data structures dfs and similar dp graphs trees | Statement | E | Codeforces Round 143 (Div. 2) {231} | PROGRAMMING | 2400 | ||
| 1176 | Little Elephant and Tree | data structures dfs and similar trees | Statement | E | Codeforces Round 157 (Div. 1) {258} | PROGRAMMING | Codeforces Round #157 — Editorial | 2400 | |
| 1680 | Little Girl and Problem on Trees | data structures graphs trees | Statement | E | Codeforces Round 169 (Div. 2) {276} | PROGRAMMING | Codeforces Round #169 — Unofficial Editorial | 2300 | |
| 1579 | Close Vertices | data structures divide and conquer trees | Statement | E | Croc Champ 2013 - Round 2 {293} | PROGRAMMING | Croc Champ 2013 — Round 2 — Editorial | 2700 | |
| 182 | Escaping on Beaveractor | data structures implementation trees | Statement | D3 | ABBYY Cup 3.0 - Finals (online version) {331} | PROGRAMMING | 2900 | ||
| 27658 | Xenia and Bit Operations | data structures trees | Statement | D | Codeforces Round 197 (Div. 2) {339} | PROGRAMMING | 1700 | ||
| 9157 | Xenia and Tree | data structures divide and conquer trees | Statement | E | Codeforces Round 199 (Div. 2) {342} | PROGRAMMING | Tutorial | 2200 | |
| 6059 | Water Tree | data structures dfs and similar graphs trees | Statement | D | Codeforces Round 200 (Div. 1) {343} | PROGRAMMING | Codeforces Round #200 Tutorial | 2100 | |
| 5872 | Vessels | data structures ds implementation trees | Statement | D | Codeforces Round 218 (Div. 2) {371} | PROGRAMMING | Codeforces Round #218 (Div. 2): Tutorial | 1900 | |
| 7312 | Tree and Queries | data structures dfs and similar trees | Statement | D | Codeforces Round 221 (Div. 1) {375} | PROGRAMMING | Codeforces Round #221 Tutorial | 2400 | |
| 2450 | New Year Tree | data structures divide and conquer trees | Statement | F | Good Bye 2013 {379} | PROGRAMMING | Tutorial Good Bye 2013 | 2400 | |
| 6761 | Propagating tree | data structures dfs and similar trees | Statement | C | Codeforces Round 225 (Div. 1) {383} | PROGRAMMING | 2400 | ||
| 1659 | On Changing Tree | data structures graphs trees | Statement | C | Codeforces Round 232 (Div. 1) {396} | PROGRAMMING | 1500.0 | Codeforces Round #232 Editorial (restored) | |
| 225 | Two Rooted Trees | data structures implementation trees | Statement | E | Codeforces Round 236 (Div. 1) {403} | PROGRAMMING | 2900 | ||
| 492 | Big Problems for Organizers | data structures graphs trees | Statement | D | RCC 2014 Warmup (Div. 1) {418} | PROGRAMMING | RCC 2014 WarmUp Analysis | 2700 | |
| 1048 | Adam and Tree | data structures trees | Statement | D | Codeforces Round 253 (Div. 1) {442} | PROGRAMMING | Codeforces #253 editorial | 2500 | |
| 181 | ELCA | data structures trees | Statement | E | Codeforces Round 275 (Div. 1) {482} | PROGRAMMING | 3200 | ||
| 2519 | Tourists | data structures dfs and similar graphs trees | Statement | E | Codeforces Round 278 (Div. 1) {487} | PROGRAMMING | Tutorial | 3100 | |
| 1770 | Treeland Tour | data structures dfs and similar dp trees | Statement | F | Codeforces Round 279 (Div. 2) {490} | PROGRAMMING | 2500 | ||
| 646 | Birthday | data structures dfs and similar dp trees | Statement | D | Codeforces Round 282 (Div. 1) {494} | PROGRAMMING | 2700 | ||
| 412 | Tavas on the Path | data structures divide and conquer trees | Statement | E | Codeforces Round 299 (Div. 1) {536} | PROGRAMMING | 3100 | ||
| 2188 | Mike and Friends | data structures string suffix structures strings trees | Statement | E | Codeforces Round 305 (Div. 1) {547} | PROGRAMMING | Codeforces Round #305 Editorial | 2800 | |
| 1130 | Ann and Half-Palindrome | data structures dp graphs string suffix structures strings trees | Statement | E | Codeforces Round 311 (Div. 2) {557} | PROGRAMMING | 2700 | ||
| 4155 | Duff in the Army | data structures trees | Statement | C | Codeforces Round 326 (Div. 1) {587} | PROGRAMMING | 2200 | ||
| 1287 | Happy Tree Party | data structures dfs and similar graphs math trees | Statement | D | Codeforces Round 329 (Div. 2) {593} | PROGRAMMING | 2300 | ||
| 15081 | Lomsat gelral | data structures dfs and similar ds trees | Statement | E | Educational Codeforces Round 2 {600} | PROGRAMMING | Editorial | 2300 | |
| 1180 | Acyclic Organic Compounds | data structures dfs and similar ds hashing strings trees | Statement | D | Codeforces Round 333 (Div. 1) {601} | PROGRAMMING | Codeforces Round #333 — editorial | 2400 | |
| 1391 | Pastoral Oddities | data structures divide and conquer ds math trees | Statement | E | Codeforces Round 334 (Div. 1) {603} | PROGRAMMING | 2900 | ||
| 586 | Power Tree | data structures trees | Statement | D | Codeforces Round 336 (Div. 1) {607} | PROGRAMMING | 2600 | ||
| 8615 | Minimum spanning tree for each edge | data structures dfs and similar ds graphs trees | Statement | E | Educational Codeforces Round 3 {609} | PROGRAMMING | Editorial | 2100 | |
| 435 | Bear and Chemistry | data structures dfs and similar graphs trees | Statement | F | VK Cup 2016 - Round 1 {639} | PROGRAMMING | 3300 | ||
| 617 | Clockwork Bomb | data structures dfs and similar ds greedy trees | Statement | E | Codeforces Round 345 (Div. 1) {650} | PROGRAMMING | 3100 | ||
| 3950 | Дерево | data structures trees | Statement | D | Codeforces Round 353 (Div. 2) {675} | PROGRAMMING | Tutorial | 1800 | |
| 4436 | Kay and Snowflake | data structures dfs and similar dp trees | Statement | B | Codeforces Round 359 (Div. 1) {685} | PROGRAMMING | 2000 | ||
| 575 | ...Wait for it... | data structures ds trees | Statement | E | Codeforces Round 362 (Div. 1) {696} | PROGRAMMING | 2900 | ||
| 301 | Iron Man | data structures geometry trees | Statement | E | Codeforces Round 366 (Div. 1) {704} | PROGRAMMING | 3500 | ||
| 3593 | Centroids | data structures dfs and similar dp graphs greedy trees | Statement | C | AIM Tech Round 3 (Div. 1) {708} | PROGRAMMING | Editorial | 2500 | |
| 1163 | Drivers Dissatisfaction | data structures ds graphs trees | Statement | F | Codeforces Round 378 (Div. 2) {733} | PROGRAMMING | 2500 | ||
| 2970 | Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths | data structures dfs and similar trees | Statement | D | Codeforces Round 383 (Div. 1) {741} | PROGRAMMING | Codeforces Round #383 editorial | 2700 | |
| 558 | Can Bash Save the Day? | data structures divide and conquer graphs trees | Statement | G | Codecraft-17 and Codeforces Round 391 (Div. 1 + Div. 2, combined) {757} | PROGRAMMING | 2500 | ||
| 601 | Timofey and a flat tree | data structures graphs hashing shortest paths trees | Statement | D | Codeforces Round 395 (Div. 1) {763} | PROGRAMMING | 2800 | ||
| 663 | ALT | data structures flows graphs trees | Statement | E | Codeforces Round 406 (Div. 1) {786} | PROGRAMMING | 3200 | ||
| 147 | Rap God | data structures dfs and similar hashing strings trees | Statement | D | Codeforces Round 406 (Div. 1) {786} | PROGRAMMING | 3300 | ||
| 7244 | Okabe and Boxes | data structures greedy trees | Statement | C | Codeforces Round 420 (Div. 2) {821} | PROGRAMMING | Tutorial | 1600 | |
| 1248 | Best Edge Weight | data structures dfs and similar graphs trees | Statement | D | Codeforces Round 423 (Div. 1, rated, based on VK Cup Finals) {827} | PROGRAMMING | Codeforces Round #423 Analysis | 2700 | |
| 428 | Red-Black Cobweb | data structures divide and conquer implementation trees | Statement | D | Codeforces Round 426 (Div. 1) {833} | PROGRAMMING | 2800 | ||
| 886 | Diverging Directions | data structures dfs and similar trees | Statement | B | IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) {838} | PROGRAMMING | 53736 | 2100 | |
| 470 | Arkady and a Nobody-men | data structures dfs and similar trees | Statement | E | Codeforces Round 434 (Div. 1, based on Technocup 2018 Elimination Round 1) {860} | PROGRAMMING | 2600 | ||
| 2152 | Subtree Minimum Query | data structures trees | Statement | F | Educational Codeforces Round 33 (Rated for Div. 2) {893} | PROGRAMMING | 2300 | ||
| 2637 | Imbalance Value of a Tree | data structures ds graphs trees | Statement | F | Educational Codeforces Round 36 (Rated for Div. 2) {915} | PROGRAMMING | 57123 | 2500 | |
| 528 | Jamie and To-do List | data structures interactive trees | Statement | D | Codeforces Round 457 (Div. 2) {916} | PROGRAMMING | 2600 | ||
| 1788 | Jamie and Tree | data structures trees | Statement | E | Codeforces Round 457 (Div. 2) {916} | PROGRAMMING | 2600 | ||
| 148 | Upside Down | data structures string suffix structures strings trees | Statement | E | Codeforces Round 459 (Div. 1) {917} | PROGRAMMING | 3000 | ||
| 4434 | Perfect Security | data structures greedy strings trees | Statement | C | VK Cup 2018 - Round 1 {923} | PROGRAMMING | 1900 | ||
| 419 | May Holidays | data structures trees | Statement | E | VK Cup 2018 - Round 3 {925} | PROGRAMMING | Разбор VK 2018 Round 3 + Codeforces Round #477 | 2900 | |
| 211 | Iqea | data structures dfs and similar divide and conquer ds shortest paths trees | Statement | E | Codeforces Round 467 (Div. 1) {936} | PROGRAMMING | Codeforces Round #467, Editorial | 3300 | |
| 694 | Maximum Control (medium) | data structures dfs and similar graphs greedy trees | Statement | B2 | Helvetic Coding Contest 2018 online mirror (teams allowed, unrated) {958} | PROGRAMMING | 2400 | ||
| 305 | Santa's Gift | data structures trees | Statement | H | Divide by Zero 2018 and Codeforces Round 474 (Div. 1 + Div. 2, combined) {960} | PROGRAMMING | Divide by Zero 2018 and Codeforces Round #474 (Div. 1 + Div. 2, combined) Editorial | 3000 | |
| 186 | Visible Black Areas | data structures ds geometry trees | Statement | G | Educational Codeforces Round 42 (Rated for Div. 2) {962} | PROGRAMMING | Educational Codeforces Round 42 Editorial | 2900 | |
| 1594 | Short Code | data structures dp greedy strings trees | Statement | E | Codeforces Round 476 (Div. 2) [Thanks, Telegram!] {965} | PROGRAMMING | Analysis of Codeforces Round #476 (Div. 2) [Thanks, Telegram!] | 2500 | |
| 1985 | The Number Games | data structures greedy trees | Statement | E | Codeforces Round 480 (Div. 2) {980} | PROGRAMMING | Tutorial | 2300 | |
| 624 | Two-Paths | data structures dp trees | Statement | G | Educational Codeforces Round 46 (Rated for Div. 2) {1000} | PROGRAMMING | 60288 | 2800 | |
| 6256 | Dominant Indices | data structures ds trees | Statement | F | Educational Codeforces Round 47 (Rated for Div. 2) {1009} | PROGRAMMING | 60630 | 2300 | |
| 362 | Raining season | data structures divide and conquer trees | Statement | E | Codeforces Round 503 (by SIS, Div. 1) {1019} | PROGRAMMING | 61161 | 3200 | |
| 134 | Pisces | data structures flows trees | Statement | G | Codeforces Round 504 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final) {1023} | PROGRAMMING | Codeforces Round 504 Editorial | 3300 | |
| 1941 | You Are Given a Tree | data structures dp trees | Statement | D | Codeforces Round 507 (Div. 1, based on Olympiad of Metropolises) {1039} | PROGRAMMING | 61668 | 2700 | |
| 1348 | Leaf Sets | data structures dfs and similar ds graphs greedy sortings trees | Statement | F | Codeforces Round 510 (Div. 2) {1042} | PROGRAMMING | Tutorial | 2400 | |
| 548 | Last chance | data structures flows graph matchings trees | Statement | A | Bubble Cup 11 - Finals [Online Mirror, Div. 1] {1045} | PROGRAMMING | E | 2800 | |
| 180 | Moonwalk challenge | data structures strings trees | Statement | J | Bubble Cup 11 - Finals [Online Mirror, Div. 1] {1045} | PROGRAMMING | E | 3000 | |
| 3855 | Vasya and a Tree | data structures trees | Statement | E | Educational Codeforces Round 54 (Rated for Div. 2) {1076} | PROGRAMMING | E | 1900 | |
| 5704 | The Fair Nut and the Best Path | data structures dp trees | Statement | A | Codeforces Round 526 (Div. 1) {1083} | PROGRAMMING | 63753 | 1800 | |
| 965 | Max Mex | data structures trees | Statement | C | Codeforces Round 526 (Div. 1) {1083} | PROGRAMMING | 63753 | 2800 | |
| 537 | Ehab and a weird weight formula | data structures trees | Statement | F | Codeforces Round 525 (Div. 2) {1088} | PROGRAMMING | Codeforces round #525 editorial | 3000 | |
| 4925 | GCD Counting | data structures dfs and similar dp number theory trees | Statement | D | Educational Codeforces Round 58 (Rated for Div. 2) {1101} | PROGRAMMING | 64483 | 2000 | |
| 315 | Sasha and Algorithm of Silence's Sounds | data structures trees | Statement | F | Codeforces Round 539 (Div. 1) {1109} | PROGRAMMING | Codeforces Round #539 Editorial | 3200 | |
| 1825 | Nearest Leaf | data structures trees | Statement | F | Codeforces Global Round 1 {1110} | PROGRAMMING | The Editorial of the First Codeforces Global Round | 2600 | |
| 991 | Tree | data structures dfs and similar dp graphs trees | Statement | E | CodeCraft-19 and Codeforces Round 537 (Div. 2) {1111} | PROGRAMMING | CodeCraft-19 and Codeforces Round #537 (Div. 2) Editorial | 2800 | |
| 760 | Niyaz and Small Degrees | data structures dp trees | Statement | F | Codeforces Global Round 2 {1119} | PROGRAMMING | Codeforces Global Round 2 Editorial | 2900 | |
| 1102 | Greedy Subsequences | data structures dp trees | Statement | G | Educational Codeforces Round 61 (Rated for Div. 2) {1132} | PROGRAMMING | T | 2600 | |
| 483 | Matches Are Not a Child's Play | data structures trees | Statement | F | Codeforces Round 545 (Div. 1) {1137} | PROGRAMMING | Codeforces Round #545 – Editorial | 3300 | |
| 533 | Double Tree | data structures divide and conquer shortest paths trees | Statement | G | Educational Codeforces Round 62 (Rated for Div. 2) {1140} | PROGRAMMING | Educational Codeforces Round 62 Editorial | 2900 | |
| 3256 | Lynyrd Skynyrd | data structures dfs and similar dp math trees | Statement | B | Codeforces Round 549 (Div. 1) {1142} | PROGRAMMING | Codeforces Round #549 Editorial | 2300 | |
| 1351 | Tree Generator™ | data structures implementation trees | Statement | C | Codeforces Round 556 (Div. 1) {1149} | PROGRAMMING | 66783 | 2900 | |
| 3866 | Minimal Segment Cover | data structures dfs and similar divide and conquer dp greedy implementation trees | Statement | E | Educational Codeforces Round 66 (Rated for Div. 2) {1175} | PROGRAMMING | Editorial | 2200 | |
| 954 | Fedor Runs for President | data structures dp trees | Statement | D | Codeforces Round 569 (Div. 1) {1179} | PROGRAMMING | Editorial of Round #569 | 2600 | |
| 600 | Daleks' Invasion (hard) | data structures ds graphs trees | Statement | E3 | Helvetic Coding Contest 2019 online mirror (teams allowed, unrated) {1184} | PROGRAMMING | helvetic-coding-contest-2019-editorial.pdf | 2500 | |
| 1096 | Indie Album | data structures dfs and similar hashing string suffix structures strings trees | Statement | G | Educational Codeforces Round 71 (Rated for Div. 2) {1207} | PROGRAMMING | Educational Codeforces Round 71 Editorial | 2600 | |
| 173 | Red Blue Tree | data structures implementation trees | Statement | H | Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2) {1208} | PROGRAMMING | 69357 | 3500 | |
| 1241 | Koala and Notebook | data structures dfs and similar graphs shortest paths strings trees | Statement | F | Codeforces Round 584 - Dasha Code Championship - Elimination Round (rated, open for everyone, Div. 1 + Div. 2) {1209} | PROGRAMMING | 69791 | 2600 | |
| 645 | Forced Online Queries Problem | data structures divide and conquer ds graphs trees | Statement | F | Educational Codeforces Round 72 (Rated for Div. 2) {1217} | PROGRAMMING | Educational Codeforces Round 72 Editorial | 2800 |