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< 1 2 3 4 5 6 7 >Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 2039 | Bear and Bowling | data structures greedy | Statement | E | Codeforces Round 318 [RussianCodeCup Thanks-Round] (Div. 1) {573} | PROGRAMMING | Codeforces Round #318 [RussianCodeCup Thanks-Round] Editorial | 3100 | |
| 861 | Fibonotci | data structures math matrices | Statement | A | Bubble Cup 8 - Finals [Online Mirror] {575} | PROGRAMMING | Bubble Cup finals 2015 Results and Editorial | 2800 | |
| 14756 | Modulo Sum | combinatorics data structures dp two pointers | Statement | B | Codeforces Round 319 (Div. 2) {577} | PROGRAMMING | Editorial Codeforces Round #319 | 1800 | |
| 2557 | Kefa and Watch | data structures hashing strings | Statement | E | Codeforces Round 321 (Div. 2) {580} | PROGRAMMING | Codeforces Round #321 Editorial | 2700 | |
| 4705 | Duff in the Army | data structures trees | Statement | C | Codeforces Round 326 (Div. 1) {587} | PROGRAMMING | Codeforces Round #326 (Editorial) | 2200 | |
| 1346 | Duff is Mad | data structures strings | Statement | F | Codeforces Round 326 (Div. 1) {587} | PROGRAMMING | Codeforces Round #326 (Editorial) | 3000 | |
| 1421 | Happy Tree Party | data structures dfs and similar graphs math trees | Statement | D | Codeforces Round 329 (Div. 2) {593} | PROGRAMMING | 2300 | ||
| 2007 | REQ | data structures number theory | Statement | D | Codeforces Round 330 (Div. 1) {594} | PROGRAMMING | Codeforces Round #330 (Div.1 + Div.2) Editorial | 2500 | |
| 6561 | Subsequences | data structures dp | Statement | C | Testing Round 12 {597} | PROGRAMMING | 1900 | ||
| 38710 | Queries about less or equal elements | binary search data structures sortings two pointers | Statement | B | Educational Codeforces Round 2 {600} | PROGRAMMING | Editorial | 1300 | |
| 18197 | Lomsat gelral | data structures dfs and similar dsu trees | Statement | E | Educational Codeforces Round 2 {600} | PROGRAMMING | Editorial | 2300 | |
| 2419 | Lipshitz Sequence | data structures math | Statement | B | Codeforces Round 333 (Div. 1) {601} | PROGRAMMING | Codeforces Round #333 — editorial | 2200 | |
| 1243 | Acyclic Organic Compounds | data structures dfs and similar dsu hashing strings trees | Statement | D | Codeforces Round 333 (Div. 1) {601} | PROGRAMMING | Codeforces Round #333 — editorial | 2400 | |
| 1116 | A Museum Robbery | data structures dp | Statement | E | Codeforces Round 333 (Div. 1) {601} | PROGRAMMING | Codeforces Round #333 — editorial | 2800 | |
| 1539 | Pastoral Oddities | data structures divide and conquer dsu math trees | Statement | E | Codeforces Round 334 (Div. 1) {603} | PROGRAMMING | Codeforces Round #334 Bonus Editorial: More Ideas on Div. 1 E | 2900 | |
| 3845 | Lazy Student | constructive algorithms data structures graphs | Statement | B | Codeforces Round 335 (Div. 1) {605} | PROGRAMMING | Codeforces Round #335 Problem Analysis | 1800 | |
| 902 | Board Game | data structures dfs and similar | Statement | D | Codeforces Round 335 (Div. 1) {605} | PROGRAMMING | Codeforces Round #335 Problem Analysis | 2400 | |
| 641 | Power Tree | data structures trees | Statement | D | Codeforces Round 336 (Div. 1) {607} | PROGRAMMING | Codeforces Round #336 Editorial | 2600 | |
| 10186 | Minimum spanning tree for each edge | data structures dfs and similar dsu graphs trees | Statement | E | Educational Codeforces Round 3 {609} | PROGRAMMING | Editorial | 2100 | |
| 1504 | Frogs and mosquitoes | data structures greedy | Statement | F | Educational Codeforces Round 3 {609} | PROGRAMMING | 2500 | ||
| 1724 | Vika and Segments | constructive algorithms data structures geometry two pointers | Statement | D | Codeforces Round 337 (Div. 2) {610} | PROGRAMMING | Codeforces Round #337 (Div.2) Editorial | 2300 | |
| 1025 | Alphabet Permutations | data structures strings | Statement | E | Codeforces Round 337 (Div. 2) {610} | PROGRAMMING | Codeforces Round #337 (Div.2) Editorial | 2700 | |
| 904 | New Year and Three Musketeers | data structures greedy sortings | Statement | E | Good Bye 2015 {611} | PROGRAMMING | Tutorial | 2300 | |
| 9814 | Replace To Make Regular Bracket Sequence | data structures expression parsing math | Statement | C | Educational Codeforces Round 4 {612} | PROGRAMMING | 22299 | 1500 | |
| 12260 | Longest k-Good Segment | binary search data structures two pointers | Statement | D | Educational Codeforces Round 5 {616} | PROGRAMMING | Editorial of Educational Codeforces Round 5 | 1700 | |
| 695 | Robot Arm | data structures geometry | Statement | E | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) {618} | PROGRAMMING | Wunder Fund Round 2016 Editorials | 2500 | |
| 7037 | New Year Tree | bitmasks data structures trees | Statement | E | Educational Codeforces Round 6 {620} | PROGRAMMING | Editorial of Educational Codeforces Round 6 | 2100 | |
| 7503 | Not Equal on a Segment | data structures implementation | Statement | C | Educational Codeforces Round 7 {622} | PROGRAMMING | Editorial of Educational Codeforces Round 7 | 1700 | |
| 419 | Frog Fights | data structures greedy | Statement | E | Codeforces Round 342 (Div. 2) {625} | PROGRAMMING | Codeforces Round #342 (Div. 2) : editorial | 2900 | |
| 606 | Raffles | data structures dp greedy math | Statement | G | 8VC Venture Cup 2016 - Elimination Round {626} | PROGRAMMING | 23522 | 3000 | |
| 1308 | Package Delivery | data structures divide and conquer greedy | Statement | C | 8VC Venture Cup 2016 - Final Round {627} | PROGRAMMING | 8VC Venture Cup 2016 — Final Round Editorial | 2300 | |
| 1081 | Zbazi in Zeydabad | data structures implementation | Statement | E | Educational Codeforces Round 8 {628} | PROGRAMMING | 43203 | 2300 | |
| 4481 | Babaei and Birthday Cake | data structures dp | Statement | D | Codeforces Round 343 (Div. 2) {629} | PROGRAMMING | Editorial of Codeforces Round #343 (Div.2) | 1900 | |
| 1148 | Famil Door and Roads | combinatorics data structures dfs and similar dp probabilities trees | Statement | E | Codeforces Round 343 (Div. 2) {629} | PROGRAMMING | Editorial of Codeforces Round #343 (Div.2) | 2400 | |
| 4437 | Report | data structures sortings | Statement | C | Codeforces Round 344 (Div. 2) {631} | PROGRAMMING | Editorial Codeforces Round #344 (Div. 2) | 1700 | |
| 2368 | Messenger | data structures hashing implementation string suffix structures strings | Statement | D | Codeforces Round 344 (Div. 2) {631} | PROGRAMMING | Editorial Codeforces Round #344 (Div. 2) | 2100 | |
| 3183 | Product Sum | data structures dp geometry | Statement | E | Codeforces Round 344 (Div. 2) {631} | PROGRAMMING | Editorial Codeforces Round #344 (Div. 2) | 2500 | |
| 3349 | Spy Syndrome 2 | data structures dp hashing implementation sortings string suffix structures strings | Statement | C | Manthan, Codefest 16 {633} | PROGRAMMING | Manthan, Codefest 16: Editorials | 1900 | |
| 620 | Startup Funding | binary search constructive algorithms data structures probabilities two pointers | Statement | E | Manthan, Codefest 16 {633} | PROGRAMMING | Manthan, Codefest 16: Editorials | 2400 | |
| 874 | Yash And Trees | bitmasks data structures dfs and similar math number theory | Statement | G | Manthan, Codefest 16 {633} | PROGRAMMING | Manthan, Codefest 16: Editorials | 2700 | |
| 694 | Fibonacci-ish II | data structures implementation | Statement | H | Manthan, Codefest 16 {633} | PROGRAMMING | Manthan, Codefest 16: Editorials | 2800 | |
| 22465 | Chat Order | *special binary search constructive algorithms data structures sortings | Statement | B | VK Cup 2016 - Qualification Round 1 {637} | PROGRAMMING | 1500 | ||
| 2124 | Running with Obstacles | *special data structures dp greedy | Statement | D | VK Cup 2016 - Qualification Round 1 {637} | PROGRAMMING | 2000 | ||
| 1063 | Bear and Contribution | data structures greedy sortings | Statement | D | VK Cup 2016 - Round 1 {639} | PROGRAMMING | Tutorial | 2500 | |
| 450 | Bear and Chemistry | data structures dfs and similar graphs trees | Statement | F | VK Cup 2016 - Round 1 {639} | PROGRAMMING | Tutorial | 3300 | |
| 2841 | Processing Queries | *special constructive algorithms data structures two pointers | Statement | B | CROC 2016 - Qualification {644} | PROGRAMMING | 2200 | ||
| 1000 | Hostname Aliases | *special binary search data structures implementation sortings strings | Statement | C | CROC 2016 - Qualification {644} | PROGRAMMING | 2300 | ||
| 156 | Автобус | binary search data structures greedy sortings | Statement | E | Технокубок 2016 - Отборочный Раунд 2 {649} | PROGRAMMING | 2500.0 | 2100 | |
| 16618 | Watchmen | data structures geometry math | Statement | A | Codeforces Round 345 (Div. 1) {650} | PROGRAMMING | Codeforces Round #345: editorial | 1500 | |
| 1592 | Zip-line | binary search data structures dp hashing | Statement | D | Codeforces Round 345 (Div. 1) {650} | PROGRAMMING | Codeforces Round #345: editorial | 2600 | |
| 678 | Clockwork Bomb | data structures dfs and similar dsu greedy trees | Statement | E | Codeforces Round 345 (Div. 1) {650} | PROGRAMMING | Codeforces Round #345: editorial | 3100 | |
| 4775 | Nested Segments | data structures sortings | Statement | D | Educational Codeforces Round 10 {652} | PROGRAMMING | Editorial of Educational Codeforces Round 10 | 1900 | |
| 1167 | Paper task | data structures string suffix structures strings | Statement | F | IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) {653} | PROGRAMMING | IndiaHacks Finals 2016 — Editorial | 2500 | |
| 7983 | New Reform | data structures dfs and similar dsu graphs greedy | Statement | E | Codeforces Round 346 (Div. 2) {659} | PROGRAMMING | Editorial for Codeforces Round #346 (Div. 2) | 1600 | |
| 2280 | Bear and Bowling 4 | binary search data structures geometry ternary search | Statement | F | Educational Codeforces Round 11 {660} | PROGRAMMING | Editorial of Educational Codeforces Round 11 | 2500 | |
| 4373 | Beautiful Subarrays | data structures divide and conquer | Statement | E | Educational Codeforces Round 12 {665} | PROGRAMMING | Editorial | 2200 | |
| 1552 | Forensic Examination | data structures string suffix structures | Statement | E | Codeforces Round 349 (Div. 1) {666} | PROGRAMMING | Codeforces Round #349 Editorial | 3100 | |
| 3459 | Correct Bracket Sequence Editor | data structures dsu strings | Statement | E | Codeforces Round 350 (Div. 2) {670} | PROGRAMMING | Codeforces Round #350 (Div.2) Editorial | 1700 | |
| 773 | Ultimate Weirdness of an Array | data structures number theory | Statement | C | Codeforces Round 352 (Div. 1) {671} | PROGRAMMING | Codeforces Round #352 Editorial | 2700 | |
| 1310 | Roads in Yusland | data structures dp greedy | Statement | D | Codeforces Round 352 (Div. 1) {671} | PROGRAMMING | Codeforces Round #352 Editorial | 2800 | |
| 491 | Organizing a Race | data structures greedy | Statement | E | Codeforces Round 352 (Div. 1) {671} | PROGRAMMING | Codeforces Round #352 Editorial | 3300 | |
| 4245 | Дерево | data structures trees | Statement | D | Codeforces Round 353 (Div. 2) {675} | PROGRAMMING | Tutorial | 1800 | |
| 3855 | Money Transfers | constructive algorithms data structures greedy sortings | Statement | C | Codeforces Round 353 (Div. 2) {675} | PROGRAMMING | Tutorial | 2000 | |
| 3319 | Trains and Statistic | data structures dp greedy | Statement | E | Codeforces Round 353 (Div. 2) {675} | PROGRAMMING | Tutorial | 2500 | |
| 1945 | Vanya and Treasure | data structures dp graphs shortest paths | Statement | D | Codeforces Round 355 (Div. 2) {677} | PROGRAMMING | Codeforces Round #355 (Div. 2) Editorial | 2300 | |
| 1030 | Lena and Queries | data structures divide and conquer geometry | Statement | F | Educational Codeforces Round 13 {678} | PROGRAMMING | Editorial | 2600 | |
| 9581 | Heap Operations | constructive algorithms data structures greedy | Statement | C | Codeforces Round 357 (Div. 2) {681} | PROGRAMMING | 45425 | 1600 | |
| 5314 | Kay and Snowflake | data structures dfs and similar dp trees | Statement | B | Codeforces Round 359 (Div. 1) {685} | PROGRAMMING | Codeforces Round #359 Editorial | 2000 | |
| 1046 | Dividing Kingdom II | brute force data structures dsu graphs sortings | Statement | D | Codeforces Round 360 (Div. 1) {687} | PROGRAMMING | Codeforces Round #360 Editorial [+ Challenges!] | 2500 | |
| 2118 | Mike and Geometry Problem | combinatorics data structures dp geometry implementation | Statement | E | Codeforces Round 361 (Div. 2) {689} | PROGRAMMING | Tutorial | 2300 | |
| 6452 | Lorenzo Von Matterhorn | brute force data structures implementation trees | Statement | A | Codeforces Round 362 (Div. 1) {696} | PROGRAMMING | Codeforces Round #362 (Editorial) | 1500 | |
| 1601 | Legen... | data structures dp matrices strings | Statement | D | Codeforces Round 362 (Div. 1) {696} | PROGRAMMING | Codeforces Round #362 (Editorial) | 2700 | |
| 626 | ...Wait for it... | data structures dsu trees | Statement | E | Codeforces Round 362 (Div. 1) {696} | PROGRAMMING | Codeforces Round #362 (Editorial) | 2900 | |
| 525 | Huffman Coding on Segment | data structures greedy | Statement | D | Codeforces Round 364 (Div. 1) {700} | PROGRAMMING | 46283 | 3000 | |
| 12527 | Cells Not Under Attack | data structures math | Statement | B | Codeforces Round 364 (Div. 2) {701} | PROGRAMMING | Codeforces Round #364 problem analysis | 1200 | |
| 13575 | Powers of Two | brute force data structures implementation math | Statement | B | Educational Codeforces Round 15 {702} | PROGRAMMING | 46324 | 1500 | |
| 3097 | Analysis of Pathes in Functional Graph | data structures graphs | Statement | E | Educational Codeforces Round 15 {702} | PROGRAMMING | 46324 | 2100 | |
| 10192 | Thor | brute force data structures implementation | Statement | A | Codeforces Round 366 (Div. 1) {704} | PROGRAMMING | Tutorial | 1600 | |
| 347 | Iron Man | data structures geometry trees | Statement | E | Codeforces Round 366 (Div. 1) {704} | PROGRAMMING | Tutorial | 3500 | |
| 12434 | Vasiliy's Multiset | binary search bitmasks data structures trees | Statement | D | Codeforces Round 367 (Div. 2) {706} | PROGRAMMING | Tutorial | 1800 | |
| 1258 | Working routine | data structures implementation | Statement | E | Codeforces Round 367 (Div. 2) {706} | PROGRAMMING | Tutorial | 2600 | |
| 2968 | Persistent Bookcase | bitmasks data structures dfs and similar implementation | Statement | D | Codeforces Round 368 (Div. 2) {707} | PROGRAMMING | 46662 | 2100 | |
| 4334 | Centroids | data structures dfs and similar dp graphs greedy trees | Statement | C | AIM Tech Round 3 (Div. 1) {708} | PROGRAMMING | Editorial | 2500 | |
| 2481 | String Set Queries | brute force data structures hashing string suffix structures strings | Statement | F | Educational Codeforces Round 16 {710} | PROGRAMMING | Editorial of Educational Codeforces Round 16 | 2700 | |
| 694 | Memory and Casinos | data structures math probabilities | Statement | E | Codeforces Round 370 (Div. 2) {712} | PROGRAMMING | Codeforces Round #370 Editorial | 2700 | |
| 8858 | Sonya and Queries | data structures implementation | Statement | A | Codeforces Round 371 (Div. 1) {713} | PROGRAMMING | Codeforces Round #371 Editorial | 1500 | |
| 4584 | Sasha and Array | data structures math matrices | Statement | C | Codeforces Round 373 (Div. 1) {718} | PROGRAMMING | Codeforces Round #373 — Editorial | 2300 | |
| 330 | Slalom | data structures dp sortings | Statement | D | Russian Code Cup 2016 - Finals [Unofficial Mirror, Div. 1 Only Recommended] {720} | PROGRAMMING | Russian Code Cup 2016 — Results and Tutorial | 3100 | |
| 2483 | Maxim and Array | constructive algorithms data structures greedy math | Statement | D | Codeforces Round 374 (Div. 2) {721} | PROGRAMMING | Codeforces Round #374 (Div. 2) Editorial | 2000 | |
| 11427 | Destroying Array | data structures dsu | Statement | C | Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) {722} | PROGRAMMING | Tutorial | 1600 | |
| 3344 | Generating Sets | binary search data structures dfs and similar greedy strings trees | Statement | D | Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) {722} | PROGRAMMING | Tutorial | 1900 | |
| 605 | Cyclic Cipher | chinese remainder theorem data structures implementation number theory two pointers | Statement | F | Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) {722} | PROGRAMMING | Tutorial | 2800 | |
| 2446 | Dense Subsequence | data structures greedy strings | Statement | D | Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined) {724} | PROGRAMMING | Tutorial | 1900 | |
| 3090 | Contest Balloons | data structures greedy | Statement | D | Canada Cup 2016 {725} | PROGRAMMING | 1800 | ||
| 1535 | Games on a CD | data structures hashing string suffix structures strings | Statement | E | Technocup 2017 - Elimination Round 1 (Unofficially Open for Everyone, Rated for Div. 2) {727} | PROGRAMMING | Tutorial | 2300 | |
| 2386 | Subordinates | constructive algorithms data structures graphs greedy sortings | Statement | E | Technocup 2017 - Elimination Round 2 {729} | PROGRAMMING | Technocup 2017 — Elimination Round 2 (and Codeforces Round 380) Editorial | 2000 | |
| 3137 | Video Cards | brute force data structures implementation math number theory | Statement | F | Codeforces Round 376 (Div. 2) {731} | PROGRAMMING | 47840 | 1900 | |
| 1277 | 80-th Level Archeology | brute force data structures greedy sortings | Statement | D | Codeforces Round 376 (Div. 2) {731} | PROGRAMMING | 47840 | 2200 | |
| 4358 | Kostya the Sculptor | data structures hashing | Statement | D | Codeforces Round 378 (Div. 2) {733} | PROGRAMMING | Codeforces Round #378 (Div. 2) editorial | 1600 | |
| 1060 | Sleep in Class | constructive algorithms data structures math two pointers | Statement | E | Codeforces Round 378 (Div. 2) {733} | PROGRAMMING | Codeforces Round #378 (Div. 2) editorial | 2500 | |
| 1295 | Drivers Dissatisfaction | data structures dsu graphs trees | Statement | F | Codeforces Round 378 (Div. 2) {733} | PROGRAMMING | Codeforces Round #378 (Div. 2) editorial | 2500 | |
| 5098 | Alyona and a tree | binary search data structures dfs and similar graphs trees | Statement | B | Codeforces Round 381 (Div. 1) {739} | PROGRAMMING | 48582 | 2000 | |
| 2617 | Gosha is hunting | brute force data structures dp flows math probabilities sortings | Statement | E | Codeforces Round 381 (Div. 1) {739} | PROGRAMMING | 48582 | 2900 | |
| 3583 | 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 | |
| 192 | Arpa’s abnormal DNA and Mehrdad’s deep interest | data structures string suffix structures | Statement | E | Codeforces Round 383 (Div. 1) {741} | PROGRAMMING | Codeforces Round #383 editorial | 3300 | |
| 901 | Music in Car | data structures greedy two pointers | Statement | F | Codeforces Round 386 (Div. 2) {746} | PROGRAMMING | Codeforces Round #386 (Div.2) Editorial | 2500 | |
| 1596 | Santa Claus and Tangerines | binary search data structures greedy two pointers | Statement | E | Technocup 2017 - Elimination Round 3 {748} | PROGRAMMING | Codeforces Round 389 (Div.2) Editorial | 2000 | |
| 2044 | Santa Claus and a Palindrome | constructive algorithms data structures greedy | Statement | D | Technocup 2017 - Elimination Round 3 {748} | PROGRAMMING | Codeforces Round 389 (Div.2) Editorial | 2000 | |
| 1255 | Inversions After Shuffle | data structures probabilities | Statement | E | Codeforces Round 388 (Div. 2) {749} | PROGRAMMING | Tutorial | 2600 | |
| 3165 | New Year and Fireworks | brute force data structures dfs and similar dp implementation | Statement | D | Good Bye 2016 {750} | PROGRAMMING | Good Bye 2016 — hints and codes | 1900 | |
| 1867 | New Year and Old Subsequence | data structures divide and conquer dp matrices | Statement | E | Good Bye 2016 {750} | PROGRAMMING | Good Bye 2016 — hints and codes | 2600 | |
| 2685 | Fedor and coupons | binary search data structures greedy sortings | Statement | D | Codeforces Round 390 (Div. 2) {754} | PROGRAMMING | 2000 | ||
| 12865 | PolandBall and Game | binary search data structures games greedy sortings strings | Statement | B | 8VC Venture Cup 2017 - Elimination Round {755} | PROGRAMMING | 8VC Venture Cup 2017 — Elimination Round [Editorial] | 1200 | |
| 2461 | Felicity is Coming! | data structures hashing sortings strings | Statement | C | Codecraft-17 and Codeforces Round 391 (Div. 1 + Div. 2, combined) {757} | PROGRAMMING | CodeCraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) Editorial | 1900 | |
| 646 | 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 | CodeCraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) Editorial | 2500 | |
| 1333 | Team Rocket Rises Again | data structures graphs shortest paths | Statement | F | Codecraft-17 and Codeforces Round 391 (Div. 1 + Div. 2, combined) {757} | PROGRAMMING | CodeCraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) Editorial | 2700 | |
| 522 | Dasha and Photos | brute force data structures dp implementation | Statement | F | Codeforces Round 394 (Div. 2) {761} | PROGRAMMING | Codeforces Round #394 (Div. 2) [Editorial] | 2900 | |
| 551 | Timofey and our friends animals | data structures divide and conquer dsu | Statement | E | Codeforces Round 395 (Div. 1) {763} | PROGRAMMING | Codeforces Round #395 [Editorial] | 2800 | |
| 644 | Timofey and a flat tree | data structures graphs hashing shortest paths trees | Statement | D | Codeforces Round 395 (Div. 1) {763} | PROGRAMMING | Codeforces Round #395 [Editorial] | 2800 | |
| 3891 | Mahmoud and a Dictionary | data structures dfs and similar dp dsu graphs | Statement | D | Codeforces Round 396 (Div. 2) {766} | PROGRAMMING | Codeforces round #396 editorial | 2000 | |
| 3453 | Mahmoud and a xor trip | bitmasks constructive algorithms data structures dfs and similar dp math trees | Statement | E | Codeforces Round 396 (Div. 2) {766} | PROGRAMMING | Codeforces round #396 editorial | 2200 | |
| 22631 | Snacktower | data structures implementation | Statement | A | Codeforces Round 398 (Div. 2) {767} | PROGRAMMING | Codeforces Round #398 (Div. 2) Editorial | 1200 | |
| 2411 | Cartons of milk | binary search data structures greedy sortings two pointers | Statement | D | Codeforces Round 398 (Div. 2) {767} | PROGRAMMING | Codeforces Round #398 (Div. 2) Editorial | 2000 | |
| 508 | Blog Post Rating | data structures sortings | Statement | E | VK Cup 2017 - Round 3 {773} | PROGRAMMING | VK Cup 2017 Round 3 + Codeforces Round #412 -- Tutorial | 2900 | |
| 293 | Significant Cups | *special binary search data structures two pointers | Statement | B | VK Cup 2017 - Wild Card Round 1 {774} | PROGRAMMING | VK Cup 2017 — Уайлд-кард раунд 1 — Разбор | 2300 | |
| 6237 | Molly's Chemicals | binary search brute force data structures implementation math | Statement | C | ICM Technex 2017 and Codeforces Round 400 (Div. 1 + Div. 2, combined) {776} | PROGRAMMING | ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined) Editorial | 1800 | |
| 511 | Sherlock's bet to Moriarty | constructive algorithms data structures divide and conquer geometry graphs implementation trees | Statement | F | ICM Technex 2017 and Codeforces Round 400 (Div. 1 + Div. 2, combined) {776} | PROGRAMMING | ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined) Editorial | 2700 | |
| 9960 | Game of Credit Cards | data structures dp greedy sortings | Statement | B | Codeforces Round 401 (Div. 2) {777} | PROGRAMMING | Problem analysis of Codeforces Round #401 (Div. 2) | 1300 | |
| 6815 | Alyona and Spreadsheet | binary search data structures dp greedy implementation two pointers | Statement | C | Codeforces Round 401 (Div. 2) {777} | PROGRAMMING | Problem analysis of Codeforces Round #401 (Div. 2) | 1600 | |
| 4737 | Hanoi Factory | brute force data structures dp greedy sortings | Statement | E | Codeforces Round 401 (Div. 2) {777} | PROGRAMMING | Problem analysis of Codeforces Round #401 (Div. 2) | 2000 | |
| 704 | Andryusha and Nervous Barriers | data structures dp | Statement | G | Технокубок 2017 - Финал (только для онсайт-финалистов) {780} | PROGRAMMING | Technocup 2017 Finals and Codeforces Round #403 Editorial | 2700 | |
| 3678 | Till I Collapse | data structures divide and conquer | Statement | C | Codeforces Round 406 (Div. 1) {786} | PROGRAMMING | Codeforces Round #406 Editorial | 2600 | |
| 7964 | Legacy | data structures graphs shortest paths | Statement | B | Codeforces Round 406 (Div. 1) {786} | PROGRAMMING | Codeforces Round #406 Editorial | 2600 | |
| 750 | ALT | data structures flows graphs trees | Statement | E | Codeforces Round 406 (Div. 1) {786} | PROGRAMMING | Codeforces Round #406 Editorial | 3200 | |
| 168 | Rap God | data structures dfs and similar hashing strings trees | Statement | D | Codeforces Round 406 (Div. 1) {786} | PROGRAMMING | Codeforces Round #406 Editorial | 3300 | |
| 234 | Mages and Monsters | data structures geometry | Statement | F | Educational Codeforces Round 18 {792} | PROGRAMMING | Educational Codeforces Round 18 - Editorial | 3100 | |
| 796 | Julia the snail | data structures divide and conquer dp | Statement | F | Tinkoff Challenge - Elimination Round {793} | PROGRAMMING | 51685 | 2900 | |
| 451 | Oleg and chess | data structures divide and conquer flows graph matchings | Statement | G | Tinkoff Challenge - Elimination Round {793} | PROGRAMMING | 51685 | 3100 | |
| 3224 | Bank Hacking | constructive algorithms data structures dp trees | Statement | C | Codeforces Round 408 (Div. 2) {796} | PROGRAMMING | Tutorial | 1900 | |
| 204 | Sequence Recovery | bitmasks data structures greedy | Statement | F | Codeforces Round 408 (Div. 2) {796} | PROGRAMMING | Tutorial | 2800 | |
| 9804 | Minimal string | data structures greedy strings | Statement | C | Educational Codeforces Round 19 {797} | PROGRAMMING | 51588 | 1700 | |
| 5576 | Array Queries | brute force data structures dp | Statement | E | Educational Codeforces Round 19 {797} | PROGRAMMING | 51588 | 2000 | |
| 2176 | Broken BST | data structures dfs and similar | Statement | D | Educational Codeforces Round 19 {797} | PROGRAMMING | 51588 | 2200 | |
| 1462 | Mice and Holes | data structures dp greedy sortings | Statement | F | Educational Codeforces Round 19 {797} | PROGRAMMING | 51588 | 2600 | |
| 545 | Mike and code of a permutation | constructive algorithms data structures graphs sortings | Statement | E | Codeforces Round 410 (Div. 2) {798} | PROGRAMMING | Codeforces Round #410 (Div. 2) Editorial | 2700 | |
| 10132 | T-shirt buying | data structures implementation | Statement | B | Playrix Codescapes Cup (Codeforces Round 413, rated, Div. 1 + Div. 2) {799} | PROGRAMMING | Playrix Codescapes Cup Problems Analysis | 1400 | |
| 4049 | Fountains | binary search data structures implementation | Statement | C | Playrix Codescapes Cup (Codeforces Round 413, rated, Div. 1 + Div. 2) {799} | PROGRAMMING | Playrix Codescapes Cup Problems Analysis | 1700 | |
| 1048 | Aquarium decoration | data structures greedy two pointers | Statement | E | Playrix Codescapes Cup (Codeforces Round 413, rated, Div. 1 + Div. 2) {799} | PROGRAMMING | Playrix Codescapes Cup Problems Analysis | 2500 | |
| 122 | Cut the pie | binary search data structures geometry | Statement | G | Playrix Codescapes Cup (Codeforces Round 413, rated, Div. 1 + Div. 2) {799} | PROGRAMMING | Playrix Codescapes Cup Problems Analysis | 2600 | |
| 1336 | Heidi and Library (medium) | data structures greedy | Statement | A2 | Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) {802} | PROGRAMMING | helvetic-coding-contest-2017-editorial.pdf | 1800 | |
| 1328 | Heidi and Library (medium) | data structures greedy | Statement | B | Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) {802} | PROGRAMMING | helvetic-coding-contest-2017-editorial.pdf | 1900 | |
| 1292 | April Fools' Problem (hard) | binary search data structures flows | Statement | M3 | Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) {802} | PROGRAMMING | helvetic-coding-contest-2017-editorial.pdf | 2900 | |
| 1264 | April Fools' Problem (hard) | binary search data structures flows | Statement | O | Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) {802} | PROGRAMMING | helvetic-coding-contest-2017-editorial.pdf | 3200 | |
| 14586 | Average Sleep Time | data structures implementation math | Statement | B | Educational Codeforces Round 21 {808} | PROGRAMMING | 52010 | 1300 | |
| 8067 | Array Division | binary search data structures implementation | Statement | D | Educational Codeforces Round 21 {808} | PROGRAMMING | 52010 | 1900 | |
| 1027 | Hitchhiking in the Baltic States | data structures dp | Statement | D | Codeforces Round 415 (Div. 1) {809} | PROGRAMMING | 52099 | 2800 | |
| 976 | Vladik and Entertaining Flags | data structures dsu graphs | Statement | E | Codeforces Round 416 (Div. 2) {811} | PROGRAMMING | Editorial | 2600 | |
| 1696 | Bipartite Checking | data structures dsu graphs | Statement | F | Educational Codeforces Round 22 {813} | PROGRAMMING | 52410 | 2600 | |
| 749 | Karen and Cards | binary search combinatorics data structures geometry | Statement | D | Codeforces Round 419 (Div. 1) {815} | PROGRAMMING | Codeforces Round #419 Editorial | 2700 | |
| 27058 | Karen and Coffee | binary search data structures implementation | Statement | B | Codeforces Round 419 (Div. 2) {816} | PROGRAMMING | Codeforces Round #419 Editorial | 1400 | |
| 6217 | Imbalanced Array | data structures divide and conquer dsu sortings | Statement | D | Educational Codeforces Round 23 {817} | PROGRAMMING | 52638 | 2000 | |
| 3695 | Choosing The Commander | bitmasks data structures trees | Statement | E | Educational Codeforces Round 23 {817} | PROGRAMMING | 52638 | 2100 | |
| 3340 | MEX Queries | binary search data structures trees | Statement | F | Educational Codeforces Round 23 {817} | PROGRAMMING | 52638 | 2400 | |
| 3778 | Multicolored Cars | data structures implementation | Statement | D | Educational Codeforces Round 24 {818} | PROGRAMMING | 52991 | 1700 | |
| 2673 | Card Game Again | binary search data structures number theory two pointers | Statement | E | Educational Codeforces Round 24 {818} | PROGRAMMING | 52991 | 2000 | |
| 1791 | Mister B and PR Shifts | data structures implementation math | Statement | B | Codeforces Round 421 (Div. 1) {819} | PROGRAMMING | Codeforces Round #421 Editorial | 2100 | |
| 7905 | Okabe and Boxes | data structures greedy trees | Statement | C | Codeforces Round 420 (Div. 2) {821} | PROGRAMMING | Tutorial | 1600 | |
| 4281 | Minimal Labels | data structures dfs and similar graphs greedy | Statement | E | Educational Codeforces Round 25 {825} | PROGRAMMING | Educational Codeforces Round 25 - Editorial | 2400 | |
| 4320 | String Reconstruction | data structures greedy sortings strings | Statement | A | Codeforces Round 423 (Div. 1, rated, based on VK Cup Finals) {827} | PROGRAMMING | Codeforces Round #423 Analysis | 1700 | |
| 1783 | DNA Evolution | data structures strings | Statement | C | Codeforces Round 423 (Div. 1, rated, based on VK Cup Finals) {827} | PROGRAMMING | Codeforces Round #423 Analysis | 2200 | |
| 1368 | 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 | |
| 565 | Dirty Arkady's Kitchen | data structures dp graphs shortest paths | Statement | F | Codeforces Round 423 (Div. 1, rated, based on VK Cup Finals) {827} | PROGRAMMING | Codeforces Round #423 Analysis | 3100 | |
| 3048 | Cards Sorting | data structures implementation sortings | Statement | B | Codeforces Round 424 (Div. 1, rated, based on VK Cup Finals) {830} | PROGRAMMING | Codeforces Round #424 Editorial | 1800 | |
| 1306 | Bamboo Partition | brute force data structures implementation math number theory sortings two pointers | Statement | C | Codeforces Round 424 (Div. 1, rated, based on VK Cup Finals) {830} | PROGRAMMING | Codeforces Round #424 Editorial | 2500 | |
| 6456 | The Bakery | binary search data structures divide and conquer dp two pointers | Statement | B | Codeforces Round 426 (Div. 1) {833} | PROGRAMMING | Codeforces Round #426 Editorial | 2200 | |
| 482 | Red-Black Cobweb | data structures divide and conquer implementation trees | Statement | D | Codeforces Round 426 (Div. 1) {833} | PROGRAMMING | Codeforces Round #426 Editorial | 2800 | |
| 275 | Caramel Clouds | data structures dp sortings | Statement | E | Codeforces Round 426 (Div. 1) {833} | PROGRAMMING | Codeforces Round #426 Editorial | 3100 | |
| 9363 | The Festive Evening | data structures implementation | Statement | B | Codeforces Round 426 (Div. 2) {834} | PROGRAMMING | Codeforces Round #426 Editorial | 1100 | |
| 1066 | Diverging Directions | data structures dfs and similar trees | Statement | B | IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) {838} | PROGRAMMING | 53736 | 2100 | |
| 2803 | Leha and another game about graph | constructive algorithms data structures dfs and similar dp graphs | Statement | B | Codeforces Round 429 (Div. 1) {840} | PROGRAMMING | Editorial | 2100 | |
| 3936 | Destiny | data structures probabilities | Statement | D | Codeforces Round 429 (Div. 1) {840} | PROGRAMMING | Editorial | 2400 | |
| 13623 | Two TVs | data structures greedy sortings | Statement | C | Educational Codeforces Round 27 {845} | PROGRAMMING | 53986 | 1500 | |
| 2574 | Driving Test | data structures dp greedy | Statement | D | Educational Codeforces Round 27 {845} | PROGRAMMING | 53986 | 1800 | |
| 2966 | Four Segments | brute force data structures dp | Statement | C | Educational Codeforces Round 28 {846} | PROGRAMMING | 54357 | 1900 | |
| 2641 | Random Query | data structures math probabilities two pointers | Statement | F | Educational Codeforces Round 28 {846} | PROGRAMMING | 54357 | 2000 | |
| 1383 | Dog Show | data structures greedy | Statement | D | 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} | PROGRAMMING | 2300 | ||
| 2001 | Rooter's Song | constructive algorithms data structures geometry implementation sortings two pointers | Statement | B | Codeforces Round 431 (Div. 1) {848} | PROGRAMMING | Codeforces Round #431 Editorial | 2100 | |
| 1574 | Goodbye Souvenir | data structures divide and conquer | Statement | C | Codeforces Round 431 (Div. 1) {848} | PROGRAMMING | Codeforces Round #431 Editorial | 2800 | |
| 81 | Lada Malina | data structures geometry | Statement | E | Codeforces Round 433 (Div. 1, based on Olympiad of Metropolises) {853} | PROGRAMMING | Codeforces Round #433 Editorial | 3400 | |
| 9929 | Marvolo Gaunt's Ring | brute force data structures dp | Statement | B | Manthan, Codefest 17 {855} | PROGRAMMING | 54750 | 1500 | |
| 4174 | Polycarp's phone book | data structures implementation sortings | Statement | D | Технокубок 2018 - Отборочный Раунд 1 {858} | PROGRAMMING | Codeforces Round 434 Div.1+Div.2 (and Technocup 2018 — Elimination Round 1) Editorial | 1700 | |
| 504 | 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 | Codeforces Round 434 Div.1+Div.2 (and Technocup 2018 — Elimination Round 1) Editorial | 2600 | |
| 2166 | Mahmoud and Ehab and the function | binary search data structures sortings | Statement | E | Codeforces Round 435 (Div. 2) {862} | PROGRAMMING | Codeforces round #435 editorial | 2200 | |
| 250 | Mahmoud and Ehab and the final stage | data structures strings | Statement | F | Codeforces Round 435 (Div. 2) {862} | PROGRAMMING | Codeforces round #435 editorial | 2800 | |
| 3795 | Yet Another Array Queries Problem | data structures implementation | Statement | D | Educational Codeforces Round 29 {863} | PROGRAMMING | Editorial | 1800 | |
| 4046 | Turn Off The TV | data structures sortings | Statement | E | Educational Codeforces Round 29 {863} | PROGRAMMING | Editorial | 2000 | |
| 7951 | Buy Low Sell High | constructive algorithms data structures greedy | Statement | D | MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists) {865} | PROGRAMMING | MemSQL Start[c]UP 3.0 Round 2 Editorial | 2300 | |
| 2053 | The Untended Antiquity | data structures hashing | Statement | E | Codeforces Round 439 (Div. 2) {869} | PROGRAMMING | Tutorial | 2300 | |
| 679 | Paths | data structures number theory | Statement | F | Technocup 2018 - Elimination Round 2 {870} | PROGRAMMING | Editorial Codeforces Round 440 Div.1+Div.2 (and Technocup 2018 — Elimination Round 2) | 2600 | |
| 788 | Awards For Contestants | brute force data structures dp | Statement | E | Educational Codeforces Round 30 {873} | PROGRAMMING | 55171 | 2500 | |
| 2483 | High Cry | binary search bitmasks combinatorics data structures divide and conquer | Statement | D | Codeforces Round 441 (Div. 1, by Moscow Team Olympiad) {875} | PROGRAMMING | Codeforces Round #441. Editorial. | 2200 | |
| 1005 | Delivery Club | binary search data structures dp | Statement | E | Codeforces Round 441 (Div. 1, by Moscow Team Olympiad) {875} | PROGRAMMING | Codeforces Round #441. Editorial. | 2600 | |
| 5061 | Olya and Energy Drinks | data structures dfs and similar graphs shortest paths | Statement | D | Codeforces Round 442 (Div. 2) {877} | PROGRAMMING | 55362 | 1900 | |
| 5456 | Danil and a Part-time Job | bitmasks data structures trees | Statement | E | Codeforces Round 442 (Div. 2) {877} | PROGRAMMING | 55362 | 2000 | |
| 2320 | Ann and Books | data structures flows hashing | Statement | F | Codeforces Round 442 (Div. 2) {877} | PROGRAMMING | 55362 | 2500 | |
| 1116 | Teams Formation | data structures implementation | Statement | B | Codeforces Round 443 (Div. 1) {878} | PROGRAMMING | Editorial | 2400 | |
| 1024 | Tournament | data structures graphs | Statement | C | Codeforces Round 443 (Div. 1) {878} | PROGRAMMING | Editorial | 2800 | |
| 14300 | Table Tennis | data structures implementation | Statement | B | Codeforces Round 443 (Div. 2) {879} | PROGRAMMING | Codeforces Round #443. Editorial | 1300 | |
| 2218 | Boxes And Balls | data structures greedy | Statement | D | Educational Codeforces Round 31 {884} | PROGRAMMING | 55470 | 2300 | |
| 547 | Ratings and Reality Shows | data structures two pointers | Statement | D | Codeforces Round 444 (Div. 2) {887} | PROGRAMMING | Codeforces Round #444 (Div. 2) Editorial | 2500 | |
| 2976 | Envy | data structures dsu graphs | Statement | C | Codeforces Round 446 (Div. 1) {891} | PROGRAMMING | Codeforces Round #446 Editorial | 2500 | |
| 3326 | Credit Card | data structures dp greedy implementation | Statement | D | Educational Codeforces Round 33 (Rated for Div. 2) {893} | PROGRAMMING | 55989 | 1800 | |
| 2488 | Subtree Minimum Query | data structures trees | Statement | F | Educational Codeforces Round 33 (Rated for Div. 2) {893} | PROGRAMMING | 55989 | 2300 | |
| 1203 | Ralph And His Tour in Binary Country | brute force data structures trees | Statement | D | Codeforces Round 447 (Div. 2) {894} | PROGRAMMING | Codeforces Round #447 (Div.2 Only) Editorial | 2300 | |
| 1264 | Eyes Closed | data structures probabilities | Statement | E | Codeforces Round 448 (Div. 2) {895} | PROGRAMMING | Codeforces Round #448(Div.2) Editorial | 2500 | |
| 4391 | Willem, Chtholly and Seniorious | data structures probabilities | Statement | C | Codeforces Round 449 (Div. 1) {896} | PROGRAMMING | Codeforces Round #449 Editorial | 2700 | |
| 2500 | Welcome home, Chtholly | data structures dsu | Statement | E | Codeforces Round 449 (Div. 1) {896} | PROGRAMMING | Codeforces Round #449 Editorial | 3100 | |
| 3512 | Segments Removal | data structures dsu flows implementation two pointers | Statement | E | Codeforces Round 452 (Div. 2) {899} | PROGRAMMING | Codeforces Round #452 (Div.2) Editorial | 2100 | |
| 2026 | Letters Removing | data structures strings | Statement | F | Codeforces Round 452 (Div. 2) {899} | PROGRAMMING | Codeforces Round #452 (Div.2) Editorial | 2200 | |
| 4997 | Remove Extra One | brute force data structures math | Statement | C | Codeforces Round 450 (Div. 2) {900} | PROGRAMMING | Codeforces Round #450(Div. 2). Editorial. | 1700 | |
| 1388 | Maximum Questions | data structures dp strings | Statement | E | Codeforces Round 450 (Div. 2) {900} | PROGRAMMING | Codeforces Round #450(Div. 2). Editorial. | 2300 | |
| 1296 | Bipartite Segments | binary search data structures dfs and similar dsu graphs two pointers | Statement | C | Codeforces Round 453 (Div. 1) {901} | PROGRAMMING | Codeforces Round #453 (Div. 1 & Div. 2) Editorial | 2500 | |
| 4461 | Almost Difference | data structures math | Statement | D | Educational Codeforces Round 34 (Rated for Div. 2) {903} | PROGRAMMING | Educational Codeforces Round 34 Editorial | 2200 | |
| 681 | Yet Another Maxflow Problem | data structures flows graphs | Statement | G | Educational Codeforces Round 34 (Rated for Div. 2) {903} | PROGRAMMING | Educational Codeforces Round 34 Editorial | 2700 | |
| 2099 | Colorful Points | data structures greedy implementation | Statement | D | Codeforces Round 455 (Div. 2) {909} | PROGRAMMING | Codeforces Round #455 (Div. 2) Editorial | 2100 | |
| 2847 | Stack Sorting | constructive algorithms data structures greedy implementation | Statement | E | Educational Codeforces Round 35 (Rated for Div. 2) {911} | PROGRAMMING | 2000 | ||
| 2138 | Fishes | data structures graphs greedy probabilities shortest paths | Statement | D | Codeforces Round 456 (Div. 2) {912} | PROGRAMMING | Codeforces Round #456 (Div. 2) Editorial | 2100 | |
| 5125 | Too Easy Problems | binary search brute force data structures greedy sortings | Statement | D | Hello 2018 {913} | PROGRAMMING | Tutorial | 1800 | |
| 6322 | Bash and a Tough Math Puzzle | data structures number theory | Statement | D | Codecraft-18 and Codeforces Round 458 (Div. 1 + Div. 2, combined) {914} | PROGRAMMING | Tutorial | 1900 | |
| 1904 | Palindromes in a Tree | bitmasks data structures divide and conquer trees | Statement | E | Codecraft-18 and Codeforces Round 458 (Div. 1 + Div. 2, combined) {914} | PROGRAMMING | Tutorial | 2400 | |
| 2121 | Substrings in a String | bitmasks brute force data structures string suffix structures strings | Statement | F | Codecraft-18 and Codeforces Round 458 (Div. 1 + Div. 2, combined) {914} | PROGRAMMING | Tutorial | 2900 | |
| 5527 | Physical Education Lessons | data structures implementation sortings | Statement | E | Educational Codeforces Round 36 (Rated for Div. 2) {915} | PROGRAMMING | 57123 | 2300 | |
| 3035 | Imbalance Value of a Tree | data structures dsu graphs trees | Statement | F | Educational Codeforces Round 36 (Rated for Div. 2) {915} | PROGRAMMING | 57123 | 2500 | |
| 562 | Jamie and To-do List | data structures interactive trees | Statement | D | Codeforces Round 457 (Div. 2) {916} | PROGRAMMING | Codeforces Round #457 (Div. 2) Editorial | 2600 | |
| 2086 | Jamie and Tree | data structures trees | Statement | E | Codeforces Round 457 (Div. 2) {916} | PROGRAMMING | Codeforces Round #457 (Div. 2) Editorial | 2600 | |
| 185 | Upside Down | data structures string suffix structures strings trees | Statement | E | Codeforces Round 459 (Div. 1) {917} | PROGRAMMING | Codeforces Round #459 Editorial | 3000 | |
| 8525 | SUM and REPLACE | brute force data structures dsu number theory | Statement | F | Educational Codeforces Round 37 (Rated for Div. 2) {920} | PROGRAMMING | T | 2000 | |
| 7681 | Connected Components? | data structures dfs and similar dsu graphs | Statement | E | Educational Codeforces Round 37 (Rated for Div. 2) {920} | PROGRAMMING | T | 2100 | |
| 4709 | Perfect Security | data structures greedy strings trees | Statement | C | VK Cup 2018 - Round 1 {923} | PROGRAMMING | VK Cup 2018 Round 1 and CF Round #470 (div. 1 & 2) editorial | 1900 | |
| 4215 | Riverside Curio | data structures dp greedy | Statement | C | VK Cup 2018 - Round 2 {924} | PROGRAMMING | VK Cup 2018 Round 2 and Codeforces Round #472 Editorial | 1800 | |
| 540 | May Holidays | data structures trees | Statement | E | VK Cup 2018 - Round 3 {925} | PROGRAMMING | Разбор VK 2018 Round 3 + Codeforces Round #477 | 2900 | |
| 2369 | Teodor is not a liar! | data structures dp | Statement | C | Codeforces Round 468 (Div. 1, based on Technocup 2018 Final Round) {930} | PROGRAMMING | Codeforces Round #468 and Technocup 2018 Final Round Analysis | 2100 | |
| 444 | Game with Tokens | data structures games implementation | Statement | D | Codeforces Round 468 (Div. 1, based on Technocup 2018 Final Round) {930} | PROGRAMMING | Codeforces Round #468 and Technocup 2018 Final Round Analysis | 2600 | |
| 511 | Coins Exhibition | data structures dp math | Statement | E | Codeforces Round 468 (Div. 1, based on Technocup 2018 Final Round) {930} | PROGRAMMING | Codeforces Round #468 and Technocup 2018 Final Round Analysis | 2700 | |
| 9151 | Recursive Queries | binary search data structures dfs and similar | Statement | B | ICM Technex 2018 and Codeforces Round 463 (Div. 1 + Div. 2, combined) {932} | PROGRAMMING | 57796 | 1300 | |
| 4087 | Escape Through Leaf | data structures dp geometry | Statement | F | ICM Technex 2018 and Codeforces Round 463 (Div. 1 + Div. 2, combined) {932} | PROGRAMMING | 57796 | 2700 | |
| 431 | Fafa and Array | data structures greedy | Statement | F | Codeforces Round 465 (Div. 2) {935} | PROGRAMMING | editorial | 2800 | |
| 252 | Iqea | data structures dfs and similar divide and conquer dsu shortest paths trees | Statement | E | Codeforces Round 467 (Div. 1) {936} | PROGRAMMING | Codeforces Round #467, Editorial | 3300 | |
| 6896 | Buy a Ticket | data structures graphs shortest paths | Statement | D | Educational Codeforces Round 38 (Rated for Div. 2) {938} | PROGRAMMING | Educational Codeforces Round 38 — Editorial | 2000 | |
| 1082 | Shortest Path Queries | bitmasks data structures dsu graphs | Statement | G | Educational Codeforces Round 38 (Rated for Div. 2) {938} | PROGRAMMING | Educational Codeforces Round 38 — Editorial | 2900 |