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4180 Devu and Partitioning of the Array brute force constructive algorithms implementation number theory Statement C Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 1700
1202 Valera and Swaps constructive algorithms dsu graphs implementation math string suffix structures Statement D Codeforces Round 252 (Div. 2) {441} PROGRAMMING Разбор Codeforces Round #252 (Div. 2) 2300
4286 Kolya and Tandem Repeat brute force implementation strings Statement B Codeforces Round 253 (Div. 2) {443} PROGRAMMING Codeforces #253 editorial 1500
13567 DZY Loves Sequences dp implementation two pointers Statement A Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 1700
17448 Suffix Structures implementation strings Statement B Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 1400
1640 Divisors brute force dfs and similar implementation number theory Statement E Codeforces Round 256 (Div. 2) {448} PROGRAMMING Codeforces Round #256 — Разбор 2500
28916 Jzzhu and Sequences implementation math Statement B Codeforces Round 257 (Div. 2) {450} PROGRAMMING Codeforces Round #257 Editorial 1400
53294 Sort the Array implementation sortings Statement B Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1300
3590 Predict Outcome of the Game brute force implementation math Statement C Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1700
8534 Eevee brute force implementation strings Statement A MemSQL Start[c]UP 2.0 - Round 1 {452} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 1200
6976 A Lot of Games dfs and similar dp games implementation strings trees Statement B Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2100
47808 Pashmak and Flowers combinatorics implementation sortings Statement B Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1300
52220 Vasya and Socks brute force implementation math Statement A Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1000
13469 Little Dima and Equation brute force implementation math number theory Statement B Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1500
30063 Caisa and Pylons brute force implementation math Statement B Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1200
6216 MUH and Important Things implementation sortings Statement B Codeforces Round 269 (Div. 2) {471} PROGRAMMING Codeforces Round #269 Editorial 1400
51938 Dreamoon and Stairs implementation math Statement A Codeforces Round 272 (Div. 2) {476} PROGRAMMING Editorial 1100
8449 Towers brute force constructive algorithms greedy implementation sortings Statement B Codeforces Round 274 (Div. 2) {479} PROGRAMMING Codeforces Round #274: editorial 1400
24932 Counterexample brute force implementation math number theory Statement A Codeforces Round 275 (Div. 2) {483} PROGRAMMING Codeforces Round #275 Editorial 1100
629 Strange Sorting implementation math Statement C Codeforces Round 276 (Div. 1) {484} PROGRAMMING Codeforces Round #276 — Editorial 2600
8788 Factory implementation math matrices Statement A Codeforces Round 276 (Div. 2) {485} PROGRAMMING Codeforces Round #276 — Editorial 1400
155601 Calculating Function implementation math Statement A Codeforces Round 277 (Div. 2) {486} PROGRAMMING Codeforces Round #277(Div. 2) Editorial 1100
10614 SwapSort greedy implementation sortings Statement A Codeforces Round 277.5 (Div. 2) {489} PROGRAMMING Codeforces Round #277.5 (Div. 2) Editorial [A-D for now] 1300
71855 Team Olympiad greedy implementation sortings Statement A Codeforces Round 279 (Div. 2) {490} PROGRAMMING Codeforces Round #279 (Div. 2) Editorial 900
90997 Vanya and Lanterns binary search implementation math sortings Statement B Codeforces Round 280 (Div. 2) {492} PROGRAMMING Разбор задач 1200
3326 Vanya and Computer Game binary search implementation math sortings Statement D Codeforces Round 280 (Div. 2) {492} PROGRAMMING Разбор задач 1800
7527 Vasya and Basketball binary search brute force data structures implementation sortings two pointers Statement C Codeforces Round 281 (Div. 2) {493} PROGRAMMING Codeforces Round #281 (Div. 2) Editorial 1700
17199 Minimum Difficulty brute force implementation math Statement A Codeforces Round 283 (Div. 2) {496} PROGRAMMING Codeforces Round #283: editorial (with bonuses!) 1000
45066 Lecture implementation strings Statement B Codeforces Round 284 (Div. 2) {499} PROGRAMMING 15353 1000
6042 New Year Book Reading constructive algorithms greedy implementation math Statement C Good Bye 2014 {500} PROGRAMMING Tutorial 2 1600
6933 Mr. Kitayuta's Gift brute force implementation strings Statement A Codeforces Round 286 (Div. 2) {505} PROGRAMMING Tutorial 1200
21892 Amr and Music greedy implementation sortings Statement A Codeforces Round 287 (Div. 2) {507} PROGRAMMING Editorial 1100
4568 Guess Your Way Out! implementation math trees Statement C Codeforces Round 287 (Div. 2) {507} PROGRAMMING Editorial 1700
22701 Han Solo and Lazer Gun brute force data structures geometry implementation math Statement B Codeforces Round 291 (Div. 2) {514} PROGRAMMING Codeforces Round #291 (Div. 2) Editorial 1400
8406 Tanya and Postcard greedy implementation strings Statement B Codeforces Round 293 (Div. 2) {518} PROGRAMMING Codeforces Round #293 (Div.2) Editorial 1500
1063 Arthur and Questions greedy implementation math ternary search Statement E Codeforces Round 293 (Div. 2) {518} PROGRAMMING 2400
43910 A and B and Compilation Errors data structures implementation sortings Statement B Codeforces Round 294 (Div. 2) {519} PROGRAMMING 1200
20738 A and B and Team Training greedy implementation math number theory Statement C Codeforces Round 294 (Div. 2) {519} PROGRAMMING Editorial 1300
62853 Two Buttons dfs and similar graphs greedy implementation math shortest paths Statement B Codeforces Round 295 (Div. 2) {520} PROGRAMMING Codeforces Round #295 Editorial (now with bonuses!) 1400
128679 Pangram implementation strings Statement A Codeforces Round 295 (Div. 2) {520} PROGRAMMING Codeforces Round #295 Editorial (now with bonuses!) 900
15624 Playing with Paper implementation math Statement A Codeforces Round 296 (Div. 2) {527} PROGRAMMING Codeforces Round #296 Editorial 1100
5090 Clique Problem data structures dp greedy implementation sortings Statement D Codeforces Round 296 (Div. 2) {527} PROGRAMMING Codeforces Round #296 Editorial 2100
2443 Board Game games greedy implementation math Statement C VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) {533} PROGRAMMING Разбор VK Cup Round 2 1700
12945 Exam constructive algorithms implementation math Statement A Codeforces Round 298 (Div. 2) {534} PROGRAMMING 1100
6147 Tourist's Notes binary search brute force greedy implementation math Statement C Codeforces Round 300 {538} PROGRAMMING Codeforces Round #300 Editorial (+challenges) 1600
2529 Infinite Inversions binary search data structures implementation sortings trees Statement E Codeforces Round 301 (Div. 2) {540} PROGRAMMING Tutorial 2400
8828 Set of Strings implementation strings Statement A Codeforces Round 302 (Div. 2) {544} PROGRAMMING Editorial Codeforces Round #302 1100
29720 Queue greedy implementation sortings Statement D Codeforces Round 303 (Div. 2) {545} PROGRAMMING Codeforces Round #303 (Div.2) editorial 1400
18676 Soldier and Badges brute force greedy implementation sortings Statement B Codeforces Round 304 (Div. 2) {546} PROGRAMMING Codeforces Round #304 (Div.2) editorial 1300
237358 Soldier and Bananas brute force implementation math Statement A Codeforces Round 304 (Div. 2) {546} PROGRAMMING Codeforces Round #304 (Div.2) editorial 800
2753 Mike and Frog brute force greedy implementation math Statement A Codeforces Round 305 (Div. 1) {547} PROGRAMMING Codeforces Round #305 Editorial 1900
10339 Mike and Fax brute force implementation strings Statement A Codeforces Round 305 (Div. 2) {548} PROGRAMMING Codeforces Round #305 Editorial 1200
10176 Face Detection implementation strings Statement A Looksery Cup 2015 {549} PROGRAMMING Looksery Cup 2015 Editorial 1000
43871 Two Substrings brute force dp greedy implementation strings Statement A Codeforces Round 306 (Div. 2) {550} PROGRAMMING Разбор задач Codeforces Round #306 (Div. 2) 1500
1500 Brackets in Implications constructive algorithms greedy implementation math Statement E Codeforces Round 306 (Div. 2) {550} PROGRAMMING Codeforces Round #306 (Div. 2) Editorial 2300
17885 GukiZ and Contest brute force implementation sortings Statement A Codeforces Round 307 (Div. 2) {551} PROGRAMMING Tutorial 1000
4066 ZgukistringZ brute force constructive algorithms implementation strings Statement B Codeforces Round 307 (Div. 2) {551} PROGRAMMING Tutorial 1800
2114 GukiZ and Binary Operations combinatorics implementation math matrices number theory Statement D Codeforces Round 307 (Div. 2) {551} PROGRAMMING Tutorial 2400
10167 Vanya and Table implementation math Statement A Codeforces Round 308 (Div. 2) {552} PROGRAMMING Codeforces #308 (Div. 2) Editorial 1100
16089 Vanya and Books implementation math Statement B Codeforces Round 308 (Div. 2) {552} PROGRAMMING Codeforces #308 (Div. 2) Editorial 1300
1740 Vanya and Brackets brute force dp expression parsing greedy implementation strings Statement E Codeforces Round 308 (Div. 2) {552} PROGRAMMING Codeforces #308 (Div. 2) Editorial 2300
2272 Kyoya and Permutation binary search combinatorics constructive algorithms greedy implementation math Statement B Codeforces Round 309 (Div. 1) {553} PROGRAMMING Codeforces Round #309 Editorial 2200
932 Case of a Top Secret binary search implementation math Statement D Codeforces Round 310 (Div. 1) {555} PROGRAMMING Codeforces Round #310 Editorial 2500
8520 Ilya and Diplomas greedy implementation math Statement A Codeforces Round 311 (Div. 2) {557} PROGRAMMING Codeforces Round #311 (Div.2) Editorial 1200
7491 Pasha and Tea constructive algorithms implementation math sortings Statement B Codeforces Round 311 (Div. 2) {557} PROGRAMMING Codeforces Round #311 (Div.2) Editorial 1500
11020 Lala Land and Apple Trees brute force implementation sortings Statement A Codeforces Round 312 (Div. 2) {558} PROGRAMMING Codeforces Round #312 (Div. 2) Editorial 1200
1210 Guess Your Way Out! II data structures implementation sortings Statement D Codeforces Round 312 (Div. 2) {558} PROGRAMMING Codeforces Round #312 (Div. 2) Editorial 2500
19951 Currency System in Geraldion implementation sortings Statement A Codeforces Round 313 (Div. 2) {560} PROGRAMMING Codeforces Round 313 — Extended editoral 1100
5409 Primes or Palindromes? brute force implementation math number theory Statement A Codeforces Round 315 (Div. 1) {568} PROGRAMMING Codeforces Round #315 Editorial 1700
5068 Music implementation math Statement A Codeforces Round 315 (Div. 2) {569} PROGRAMMING Codeforces Round #315 Editorial 1500
16906 Simple Game constructive algorithms games greedy implementation math Statement B Codeforces Round 316 (Div. 2) {570} PROGRAMMING Codeforces Round #316 Editorial 1300
2702 Lengthening Sticks combinatorics implementation math Statement A Codeforces Round 317 [AimFund Thanks-Round] (Div. 1) {571} PROGRAMMING Codeforces Round #317 [AimFund Thanks-Round] Editorial 2300
9027 Order Book data structures greedy implementation sortings Statement B Codeforces Round 317 [AimFund Thanks-Round] (Div. 2) {572} PROGRAMMING Codeforces Round #317 [AimFund Thanks-Round] Editorial 1400
18504 Bear and Poker implementation math number theory Statement A Codeforces Round 318 [RussianCodeCup Thanks-Round] (Div. 1) {573} PROGRAMMING Codeforces Round #318 [RussianCodeCup Thanks-Round] Editorial 1400
45712 Multiplication Table implementation number theory Statement A Codeforces Round 319 (Div. 2) {577} PROGRAMMING Editorial Codeforces Round #319 1100
5460 Finding Team Member brute force implementation sortings Statement B Codeforces Round 320 (Div. 2) [Bayan Thanks-Round] {579} PROGRAMMING Codeforces Round #320 [Bayan Thanks-Round] Editorial 1400
13662 Luxurious Houses implementation math Statement B Codeforces Round 322 (Div. 2) {581} PROGRAMMING Codeforces Round #322 (Div.2) Editorial 1200
7604 Developing Skills implementation math sortings Statement C Codeforces Round 322 (Div. 2) {581} PROGRAMMING Codeforces Round #322 (Div.2) Editorial 1400
4762 Three Logos bitmasks brute force constructive algorithms geometry implementation math Statement D Codeforces Round 322 (Div. 2) {581} PROGRAMMING Codeforces Round #322 (Div.2) Editorial 1700
85464 Vasya the Hipster implementation math Statement A Codeforces Round 322 (Div. 2) {581} PROGRAMMING Codeforces Round #322 (Div.2) Editorial 700
802 Digits of Number Pi dp implementation strings Statement F Codeforces Round 325 (Div. 1) {585} PROGRAMMING Разбор Codeforces Round #325 3200
8660 Rebranding implementation strings Statement B Codeforces Round 327 (Div. 2) {591} PROGRAMMING Editorial 1200
17336 Wizards' Duel implementation math Statement A Codeforces Round 327 (Div. 2) {591} PROGRAMMING 900
760 Edo and Magnets brute force greedy implementation two pointers Statement C Codeforces Round 330 (Div. 1) {594} PROGRAMMING Codeforces Round #330 (Div.1 + Div.2) Editorial 2700
12245 Queries on a String implementation strings Statement B Educational Codeforces Round 1 {598} PROGRAMMING Editorial 1400
5836 Extract Numbers implementation strings Statement A Educational Codeforces Round 2 {600} PROGRAMMING Editorial 1600
12165 Approximating a Constant Range dp implementation two pointers Statement B Codeforces Round 333 (Div. 2) {602} PROGRAMMING Codeforces Round #333 — editorial 1400
9946 Saitama Destroys Hotel implementation math Statement A Codeforces Round 336 (Div. 2) {608} PROGRAMMING Codeforces Round #336 Editorial 1100
7422 Load Balancing implementation math Statement C Educational Codeforces Round 3 {609} PROGRAMMING Editorial 1500
19512 Флеш-карты greedy implementation sortings Statement A Educational Codeforces Round 3 {609} PROGRAMMING Editorial 800
7618 HDD is Outdated Technology implementation math Statement B Educational Codeforces Round 4 {612} PROGRAMMING 22299 1200
7853 The Text Splitting brute force implementation strings Statement A Educational Codeforces Round 4 {612} PROGRAMMING 22299 1300
7304 Gena's Code implementation math Statement B Codeforces Round 339 (Div. 2) {614} PROGRAMMING Tutorial 1400
1065 Hexagons binary search implementation math Statement E Codeforces Round 338 (Div. 2) {615} PROGRAMMING Codeforces Round #338 (Div. 2) editorial 2200
10865 Comparing Two Long Integers implementation strings Statement A Educational Codeforces Round 5 {616} PROGRAMMING Editorial of Educational Codeforces Round 5 1200
3527 Sum of Remainders implementation math number theory Statement E Educational Codeforces Round 5 {616} PROGRAMMING Editorial of Educational Codeforces Round 5 2200
14389 Professor GukiZ's Robot implementation math Statement A Educational Codeforces Round 6 {620} PROGRAMMING Editorial of Educational Codeforces Round 6 1000
10281 Infinite Sequence implementation math Statement A Educational Codeforces Round 7 {622} PROGRAMMING Editorial of Educational Codeforces Round 7 1100
5671 Guest From the Past implementation math Statement A Codeforces Round 342 (Div. 2) {625} PROGRAMMING Codeforces Round #342 (Div. 2) : editorial 1700
679 Finals in arithmetic constructive algorithms implementation math Statement D Codeforces Round 342 (Div. 2) {625} PROGRAMMING Codeforces Round #342 (Div. 2) : editorial 2400
4086 Cracking the Code implementation math Statement L Experimental Educational Round: VolBIT Formulas Blitz {630} PROGRAMMING Разбор задач Experimental Educational Round: VolBIT Formulas Blitz 1700
2449 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
3391 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
3055 Fibonacci-ish brute force dp hashing implementation math Statement D Manthan, Codefest 16 {633} PROGRAMMING Manthan, Codefest 16: Editorials 2000
1255 Bear and Polynomials hashing implementation math Statement C VK Cup 2016 - Round 1 {639} PROGRAMMING Tutorial 2200
1575 Little Artem and Random Variable dp implementation math probabilities Statement D VK Cup 2016 - Round 2 {641} PROGRAMMING VK Cup 2016 — Раунд 2 (editorial) 2300
1002 Hostname Aliases *special binary search data structures implementation sortings strings Statement C CROC 2016 - Qualification {644} PROGRAMMING 2300
24167 Joysticks dp greedy implementation math Statement A Codeforces Round 345 (Div. 2) {651} PROGRAMMING 1100
5273 Gabriel and Caterpillar implementation math Statement A Educational Codeforces Round 10 {652} PROGRAMMING Editorial of Educational Codeforces Round 10 1400
9220 Bear and Three Balls brute force implementation sortings Statement A IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) {653} PROGRAMMING IndiaHacks Finals 2016 — Editorial 1000
16875 Round House implementation math Statement A Codeforces Round 346 (Div. 2) {659} PROGRAMMING Editorial for Codeforces Round #346 (Div. 2) 1100
6722 Bicycle Race geometry implementation math Statement D Codeforces Round 346 (Div. 2) {659} PROGRAMMING Editorial for Codeforces Round #346 (Div. 2) 1500
10486 Co-prime Array greedy implementation math number theory Statement A Educational Codeforces Round 11 {660} PROGRAMMING Editorial of Educational Codeforces Round 11 1300
1716 International Olympiad constructive algorithms greedy implementation math Statement D CROC 2016 - Final Round [Private, For Onsite Finalists Only] {662} PROGRAMMING Editorial for CROC 2016 Finals and Codeforces Round #347 2000
3812 Reberland Linguistics dp implementation strings Statement A Codeforces Round 349 (Div. 1) {666} PROGRAMMING Codeforces Round #349 Editorial 1800
10044 Cinema implementation sortings Statement C Codeforces Round 350 (Div. 2) {670} PROGRAMMING Codeforces Round #350 (Div.2) Editorial 1400
18578 Different is Good constructive algorithms implementation strings Statement B Codeforces Round 352 (Div. 2) {672} PROGRAMMING 1000
5839 Pyramid of Glasses implementation math math Statement B Codeforces Round 354 (Div. 2) {676} PROGRAMMING Editorial 1500
1965 Theseus and labyrinth graphs implementation shortest paths Statement D Codeforces Round 354 (Div. 2) {676} PROGRAMMING 2000
7930 Vanya and Food Processor implementation math Statement B Codeforces Round 355 (Div. 2) {677} PROGRAMMING Codeforces Round #355 (Div. 2) Editorial 1400
6974 Vanya and Label bitmasks combinatorics implementation strings Statement C Codeforces Round 355 (Div. 2) {677} PROGRAMMING Codeforces Round #355 (Div. 2) Editorial 1500
15231 Johny Likes Numbers implementation math Statement A Educational Codeforces Round 13 {678} PROGRAMMING Editorial 1000
11099 Joty and Chocolate implementation math number theory Statement C Educational Codeforces Round 13 {678} PROGRAMMING Editorial 1600
343 Bear and Chase brute force dfs and similar graphs implementation math probabilities Statement D Codeforces Round 356 (Div. 1) {679} PROGRAMMING Codeforces Round #356 — Editorial 2900
517 Kay and Eternity brute force implementation sortings Statement D Codeforces Round 359 (Div. 1) {685} PROGRAMMING Codeforces Round #359 Editorial 2600
8019 Little Robber Girl's Zoo constructive algorithms implementation sortings Statement B Codeforces Round 359 (Div. 2) {686} PROGRAMMING Codeforces Round #359 Editorial 1200
8229 s-palindrome implementation strings Statement B Educational Codeforces Round 14 {691} PROGRAMMING Editorial of Educational Codeforces Round 14 1600
2982 Exponential notation implementation strings Statement C Educational Codeforces Round 14 {691} PROGRAMMING Editorial of Educational Codeforces Round 14 1900
6468 Lorenzo Von Matterhorn brute force data structures implementation trees Statement A Codeforces Round 362 (Div. 1) {696} PROGRAMMING Codeforces Round #362 (Editorial) 1500
2218 PLEASE combinatorics dp implementation math matrices Statement C Codeforces Round 362 (Div. 1) {696} PROGRAMMING Codeforces Round #362 (Editorial) 2200
13380 Pineapple Incident implementation math Statement A Codeforces Round 362 (Div. 2) {697} PROGRAMMING 1000
5993 Barnicle brute force implementation math strings Statement B Codeforces Round 362 (Div. 2) {697} PROGRAMMING 1400
23256 Cellular Network binary search implementation two pointers Statement C Educational Codeforces Round 15 {702} PROGRAMMING 46324 1500
13802 Powers of Two brute force data structures implementation math Statement B Educational Codeforces Round 15 {702} PROGRAMMING 46324 1500
6069 Mishka and trip implementation math Statement B Codeforces Round 365 (Div. 2) {703} PROGRAMMING Codeforces Round #365 (Div. 2) Editorial 1400
525 Black Widow dp graphs implementation math Statement C Codeforces Round 366 (Div. 1) {704} PROGRAMMING Tutorial 2800
9820 Letters Cyclic Shift constructive algorithms greedy implementation strings Statement A AIM Tech Round 3 (Div. 1) {708} PROGRAMMING Editorial 1200
3456 Recover the String constructive algorithms greedy implementation math Statement B AIM Tech Round 3 (Div. 1) {708} PROGRAMMING Editorial 1900
5031 Checkpoints greedy implementation sortings Statement B AIM Tech Round 3 (Div. 2) {709} PROGRAMMING 1500
10331 Memory and Trident implementation strings Statement B Codeforces Round 370 (Div. 2) {712} PROGRAMMING Codeforces Round #370 Editorial 1200
12597 Memory and Crow implementation math Statement A Codeforces Round 370 (Div. 2) {712} PROGRAMMING Codeforces Round #370 Editorial 900
11156 Meeting of Old Friends implementation math Statement A Codeforces Round 371 (Div. 2) {714} PROGRAMMING Codeforces Round #371 Editorial 1100
15549 Filya and Homework implementation sortings Statement B Codeforces Round 371 (Div. 2) {714} PROGRAMMING Codeforces Round #371 Editorial 1200
4310 Potions Homework implementation sortings Statement C Bubble Cup 9 - Finals [Online Mirror] {717} PROGRAMMING Tutorial 1200
4633 Efim and Strange Grade dp implementation math Statement A Codeforces Round 373 (Div. 1) {718} PROGRAMMING Codeforces Round #373 — Editorial 1700
12479 Passwords implementation math sortings strings Statement B Codeforces Round 374 (Div. 2) {721} PROGRAMMING Codeforces Round #374 (Div. 2) Editorial 1200
6769 Verse Pattern implementation strings Statement B Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) {722} PROGRAMMING Tutorial 1200
609 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
10984 Text Document Analysis expression parsing implementation strings Statement B Codeforces Round 375 (Div. 2) {723} PROGRAMMING Codeforces Round #375 (Div.2) Editorial 1100
101714 The New Year: Meeting Friends implementation math sortings Statement A Codeforces Round 375 (Div. 2) {723} PROGRAMMING Codeforces Round #375 (Div.2) Editorial 800
4251 Batch Sort brute force greedy implementation math Statement B Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined) {724} PROGRAMMING Tutorial 1500
2284 Ray Tracing greedy hashing implementation math number theory sortings Statement C Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined) {724} PROGRAMMING Tutorial 1800
5328 Food on the Plane implementation math Statement B Canada Cup 2016 {725} PROGRAMMING 1200
2946 Hidden Word brute force constructive algorithms implementation strings Statement C Canada Cup 2016 {725} PROGRAMMING Canada Cup Editorial 1600
2135 Bill Total Value expression parsing implementation strings Statement B Technocup 2017 - Elimination Round 1 (Unofficially Open for Everyone, Rated for Div. 2) {727} PROGRAMMING Tutorial 1600
8111 Interview with Oleg implementation strings Statement A Technocup 2017 - Elimination Round 2 {729} PROGRAMMING Technocup 2017 — Elimination Round 2 (and Codeforces Round 380) Editorial 1000
915 Running Over The Bridges greedy implementation math Statement D 2016-2017 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) {730} PROGRAMMING Разбор задач (видео, по-русски) 2400
3156 Video Cards brute force data structures implementation math number theory Statement F Codeforces Round 376 (Div. 2) {731} PROGRAMMING 47840 1900
53502 Night at the Museum implementation strings Statement A Codeforces Round 376 (Div. 2) {731} PROGRAMMING 47840 800
10194 Sanatorium binary search constructive algorithms greedy implementation math Statement C Codeforces Round 377 (Div. 2) {732} PROGRAMMING Codeforces Round #377 (Div. 2) Editorial 1300
89524 Buy a Shovel brute force constructive algorithms implementation math Statement A Codeforces Round 377 (Div. 2) {732} PROGRAMMING Codeforces Round #377 (Div. 2) Editorial 800
1404 Anton and School bitmasks constructive algorithms implementation math Statement F Codeforces Round 379 (Div. 2) {734} PROGRAMMING Tutorial of Codeforces Round #379 (Div. 2) 2600
197322 Anton and Danik implementation strings Statement A Codeforces Round 379 (Div. 2) {734} PROGRAMMING Tutorial of Codeforces Round #379 (Div. 2) 700
32053 Anton and Digits brute force greedy implementation math Statement B Codeforces Round 379 (Div. 2) {734} PROGRAMMING Tutorial of Codeforces Round #379 (Div. 2) 800
13163 Ostap and Grasshopper implementation strings Statement A Codeforces Round 382 (Div. 2) {735} PROGRAMMING Codeforces Round #382 Editorial 1000
52357 Arpa’s hard exam and Mehrdad’s naive cheat implementation math number theory Statement A Codeforces Round 383 (Div. 2) {742} PROGRAMMING Test data 1000
11009 Hongcow Learns the Cyclic Shift implementation strings Statement A Codeforces Round 385 (Div. 2) {745} PROGRAMMING Tutorial 900
3865 Tram constructive algorithms implementation math Statement C Codeforces Round 386 (Div. 2) {746} PROGRAMMING Codeforces Round #386 (Div.2) Editorial 1600
1906 Numbers Exchange greedy implementation math Statement E Codeforces Round 386 (Div. 2) {746} PROGRAMMING Codeforces Round #386 (Div.2) Editorial 1800
23914 Compote implementation math Statement A Codeforces Round 386 (Div. 2) {746} PROGRAMMING Codeforces Round #386 (Div.2) Editorial 800
31993 Decoding implementation strings Statement B Codeforces Round 386 (Div. 2) {746} PROGRAMMING 900
9659 Mammoth's Genome Decoding implementation strings Statement B Codeforces Round 387 (Div. 2) {747} PROGRAMMING 49171 1000
2098 Comments dfs and similar expression parsing implementation strings Statement E Codeforces Round 387 (Div. 2) {747} PROGRAMMING 49171 1700
5569 Santa Claus and Keyboard Check implementation strings Statement B Technocup 2017 - Elimination Round 3 {748} PROGRAMMING Codeforces Round 389 (Div.2) Editorial 1500
9362 Santa Claus and a Place in a Class implementation math Statement A Technocup 2017 - Elimination Round 3 {748} PROGRAMMING Codeforces Round 389 (Div.2) Editorial 900
6264 Voting greedy implementation two pointers Statement C Codeforces Round 388 (Div. 2) {749} PROGRAMMING Tutorial 1600
57426 Bachgold Problem greedy implementation math number theory Statement A Codeforces Round 388 (Div. 2) {749} PROGRAMMING Tutorial 700
597 New Year and Finding Roots constructive algorithms implementation interactive trees Statement F Good Bye 2016 {750} PROGRAMMING Good Bye 2016 — hints and codes 2700
93342 New Year and Hurry binary search brute force implementation math Statement A Good Bye 2016 {750} PROGRAMMING Good Bye 2016 — hints and codes 800
1101 Vladik and chat brute force constructive algorithms dp implementation strings Statement C Codeforces Round 390 (Div. 2) {754} PROGRAMMING 2200
10743 Blown Garland brute force implementation number theory Statement B Codeforces Round 392 (Div. 2) {758} PROGRAMMING Codeforces Round #392 (Div. 2) Editorial 1200
4065 Unfair Poll binary search constructive algorithms implementation math Statement C Codeforces Round 392 (Div. 2) {758} PROGRAMMING Codeforces Round #392 (Div. 2) Editorial 1700
75764 Holiday Of Equality implementation math Statement A Codeforces Round 392 (Div. 2) {758} PROGRAMMING Codeforces Round #392 (Div. 2) Editorial 700
8657 Petr and a calendar implementation math Statement A Codeforces Round 393 (Div. 2) (8VC Venture Cup 2017 - Final Round Div. 2 Edition) {760} PROGRAMMING 8VC Venture Cup 2017 — Final Round and Codeforces Round #393 Editorial 900
15157 Dasha and Stairs brute force constructive algorithms implementation math Statement A Codeforces Round 394 (Div. 2) {761} PROGRAMMING Codeforces Round #394 (Div. 2) [Editorial] 1100
7058 Dasha and friends brute force implementation math Statement B Codeforces Round 394 (Div. 2) {761} PROGRAMMING Codeforces Round #394 (Div. 2) [Editorial] 1300
10685 USB vs. PS/2 greedy implementation sortings two pointers Statement B Educational Codeforces Round 17 {762} PROGRAMMING Tutorial 1400
11917 Timofey and a tree dfs and similar dp dsu graphs implementation trees Statement A Codeforces Round 395 (Div. 1) {763} PROGRAMMING Codeforces Round #395 [Editorial] 1600
783 Timofey and remoduling brute force implementation math number theory Statement C Codeforces Round 395 (Div. 1) {763} PROGRAMMING Codeforces Round #395 [Editorial] 2500
17151 Taymyr is calling you brute force implementation math Statement A Codeforces Round 395 (Div. 2) {764} PROGRAMMING Codeforces Round #395 [Editorial] 800
7557 Code obfuscation greedy implementation strings Statement B Codeforces Round 397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) {765} PROGRAMMING Codeforces Round #397 Editorial 1100
1336 Tree Folding dfs and similar dp greedy implementation trees Statement E Codeforces Round 397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) {765} PROGRAMMING Codeforces Round #397 Editorial 2200
9582 Neverending competitions implementation math Statement A Codeforces Round 397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) {765} PROGRAMMING Codeforces Round #397 Editorial 900
3976 Jon Snow and his Favourite Number brute force dp implementation sortings Statement C Divide by Zero 2017 and Codeforces Round 399 (Div. 1 + Div. 2, combined) {768} PROGRAMMING Editorial Divide by Zero and Codeforces Round #399 (Div. 1+2, combined) 1800
6444 Year of University Entrance *special implementation sortings Statement A VK Cup 2017 - Qualification 1 {769} PROGRAMMING Tutorial 1500
3072 Maximize Sum of Digits *special implementation math Statement B VK Cup 2017 - Qualification 2 {770} PROGRAMMING Tutorial of VK Cup 2017 Qualification Round 2 1700
1397 Stepan and Vowels *special implementation strings Statement K VK Cup 2017 - Wild Card Round 1 {774} PROGRAMMING VK Cup 2017 — Уайлд-кард раунд 1 — Разбор 1600
6265 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
512 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
12912 A Serial Killer brute force implementation strings Statement A 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 900
10916 Shell Game constructive algorithms implementation math Statement A Codeforces Round 401 (Div. 2) {777} PROGRAMMING Problem analysis of Codeforces Round #401 (Div. 2) 1100
6835 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
5259 Cloud of Hashtags binary search greedy implementation strings Statement D Codeforces Round 401 (Div. 2) {777} PROGRAMMING Problem analysis of Codeforces Round #401 (Div. 2) 1800
3048 Innokenty and a Football League 2-sat graphs greedy implementation shortest paths strings Statement D Технокубок 2017 - Финал (только для онсайт-финалистов) {780} PROGRAMMING Technocup 2017 Finals and Codeforces Round #403 Editorial 2000
133 Intranet of Buses binary search geometry implementation two pointers Statement H Технокубок 2017 - Финал (только для онсайт-финалистов) {780} PROGRAMMING Technocup 2017 Finals and Codeforces Round #403 Editorial 3000
111909 Anton and Polyhedrons implementation strings Statement A Codeforces Round 404 (Div. 2) {785} PROGRAMMING Editorial 600
5774 Not Afraid greedy implementation math Statement B Codeforces Round 406 (Div. 2) {787} PROGRAMMING Codeforces Round #406 Editorial 1300
9833 Anastasia and pebbles implementation math Statement A Codeforces Round 407 (Div. 2) {789} PROGRAMMING Codeforces Round #407(Div.1 + Div.2) Editorial 1100
4958 Masha and geometric depression brute force implementation math Statement B Codeforces Round 407 (Div. 2) {789} PROGRAMMING Codeforces Round #407(Div.1 + Div.2) Editorial 1700
9726 New Bus Route implementation sortings Statement A Educational Codeforces Round 18 {792} PROGRAMMING Educational Codeforces Round 18 - Editorial 1100
8046 Oleg and shares implementation math Statement A Tinkoff Challenge - Elimination Round {793} PROGRAMMING 51685 1000
4851 Igor and his way to work dfs and similar graphs implementation shortest paths Statement B Tinkoff Challenge - Elimination Round {793} PROGRAMMING 51685 1600
1364 Mice problem geometry implementation math sortings Statement C Tinkoff Challenge - Elimination Round {793} PROGRAMMING 51685 2200
20126 k-Factorization implementation math number theory Statement A Educational Codeforces Round 19 {797} PROGRAMMING 51588 1100
8194 Fake News (easy) implementation strings Statement G1 Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) {802} PROGRAMMING helvetic-coding-contest-2017-editorial.pdf 800
10176 Minimum number of steps combinatorics greedy implementation math Statement B Codeforces Round 411 (Div. 1) {804} PROGRAMMING Codeforces Round #411 Editorial 1400
23333 Is it rated? implementation sortings Statement A Codeforces Round 412 (rated, Div. 2, base on VK Cup 2017 Round 3) {807} PROGRAMMING VK Cup 2017 Round 3 + Codeforces Round #412 -- Tutorial 900
15278 Average Sleep Time data structures implementation math Statement B Educational Codeforces Round 21 {808} PROGRAMMING 52010 1300
4898 Do you want a date? implementation math sortings Statement A Codeforces Round 415 (Div. 1) {809} PROGRAMMING 52099 1500
9330 Straight <<A>> implementation math Statement A Codeforces Round 415 (Div. 2) {810} PROGRAMMING 52099 1000
6803 Vladik and Complicated Book implementation sortings Statement B Codeforces Round 416 (Div. 2) {811} PROGRAMMING Editorial 1300
350 Sagheer and Kindergarten dfs and similar graphs implementation trees Statement D Codeforces Round 417 (Div. 2) {812} PROGRAMMING [Editorial] Codeforces Round #417 (Div. 2) 2700
11063 An abandoned sentiment from past constructive algorithms greedy implementation sortings Statement A Codeforces Round 418 (Div. 2) {814} PROGRAMMING Codeforces Round #418 (Div. 2) Editorial 1000
6901 Treasure Hunt implementation math number theory Statement A Educational Codeforces Round 23 {817} PROGRAMMING 52638 1200
6438 Makes And The Product combinatorics implementation math sortings Statement B Educational Codeforces Round 23 {817} PROGRAMMING 52638 1500
7812 Diplomas and Certificates implementation math Statement A Educational Codeforces Round 24 {818} PROGRAMMING 52991 1000
1795 Mister B and PR Shifts data structures implementation math Statement B Codeforces Round 421 (Div. 1) {819} PROGRAMMING Codeforces Round #421 Editorial 2100
10236 Crossword solving brute force implementation strings Statement B Codeforces Round 422 (Div. 2) {822} PROGRAMMING Codeforces Round #422 (Div. 2) Editorial 1100
4945 Hacker, pack your bags! binary search greedy implementation sortings Statement C Codeforces Round 422 (Div. 2) {822} PROGRAMMING Codeforces Round #422 (Div. 2) Editorial 1600
37138 I'm bored with life implementation math number theory Statement A Codeforces Round 422 (Div. 2) {822} PROGRAMMING Codeforces Round #422 (Div. 2) Editorial 800
3702 High Load constructive algorithms greedy implementation trees Statement B Codeforces Round 423 (Div. 1, rated, based on VK Cup Finals) {827} PROGRAMMING Codeforces Round #423 Analysis 1800
3058 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
1316 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
338 Perpetual Motion Machine constructive algorithms dp graphs implementation math trees Statement E Codeforces Round 424 (Div. 1, rated, based on VK Cup Finals) {830} PROGRAMMING Codeforces Round #424 Editorial 3100
15716 Keyboard Layouts implementation strings Statement B Codeforces Round 424 (Div. 2, rated, based on VK Cup Finals) {831} PROGRAMMING Codeforces Round #424 Editorial 800
4687 Petya and Exam implementation strings Statement B Codeforces Round 425 (Div. 2) {832} PROGRAMMING Codeforces Round #425 (Div.2) Editorial 1600
484 Strange Radiation binary search implementation math Statement C Codeforces Round 425 (Div. 2) {832} PROGRAMMING Codeforces Round #425 (Div.2) Editorial 2500
487 Red-Black Cobweb data structures divide and conquer implementation trees Statement D Codeforces Round 426 (Div. 1) {833} PROGRAMMING Codeforces Round #426 Editorial 2800
2078 Vasya's Function binary search implementation math Statement E Educational Codeforces Round 26 {837} PROGRAMMING 53662 2200
5984 Sorting by Subsequences dfs and similar dsu implementation math sortings Statement A AIM Tech Round 4 (Div. 1) {843} PROGRAMMING AIM Tech Round 4 -- Editorial 1400
12235 Diversity greedy implementation strings Statement A AIM Tech Round 4 (Div. 2) {844} PROGRAMMING AIM Tech Round 4 -- Editorial 1000
8498 Chess Tourney implementation sortings Statement A Educational Codeforces Round 27 {845} PROGRAMMING 53986 1100
2009 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
2136 Arpa and a list of numbers implementation number theory Statement B Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING Codeforces Round #432 editorial 2000
10325 Arpa and a research in Mexican wave implementation math Statement A Codeforces Round 432 (Div. 2, based on IndiaHacks Final Round 2017) {851} PROGRAMMING Codeforces Round #432 editorial 800
429 Digits brute force implementation math Statement A Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING Tutorial 2700
27630 Tom Riddle's Diary brute force implementation strings Statement A Manthan, Codefest 17 {855} PROGRAMMING 54750 700
4197 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
12302 Fair Game implementation sortings Statement A Codeforces Round 436 (Div. 2) {864} PROGRAMMING Codeforces Round #436 (Div.2) Разбор 1000
10011 Polycarp and Letters brute force implementation strings Statement B Codeforces Round 436 (Div. 2) {864} PROGRAMMING Codeforces Round #436 (Div.2) Разбор 1100