Codeforces problemset search & solutions
Exclude tags.

Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.

Search on plain tags, ratings, names, and problem text. Example: brute force or binary search

< 1 2 3 4 ... 6 7 8 >

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
727 Broken Monitor brute force constructive algorithms greedy implementation Statement D Codeforces Round 217 (Div. 2) {370} PROGRAMMING Codeforces Round #217 (Div. 2): tutorial 2100
37152 Hamburgers binary search brute force Statement C Codeforces Round 218 (Div. 2) {371} PROGRAMMING Codeforces Round #218 (Div. 2): Tutorial 1600
2882 Counting Rectangles is Fun brute force divide and conquer dp Statement B Codeforces Round 219 (Div. 1) {372} PROGRAMMING 9944 2100
26246 Playing with Dice brute force Statement A Codeforces Round 222 (Div. 2) {378} PROGRAMMING Codeforces Round #222 — Problem Analysis 800
1688 New Year Letter bitmasks brute force dp Statement D Good Bye 2013 {379} PROGRAMMING Tutorial Good Bye 2013 2000
2957 Sereja and Prefixes binary search brute force Statement A Codeforces Round 223 (Div. 1) {380} PROGRAMMING Codeforces Round #223 — Tutorial 1700
17455 Bear and Raspberry brute force greedy implementation Statement A Codeforces Round 226 (Div. 2) {385} PROGRAMMING Codeforces Round #226 (Div. 2) — Editorial 1100
10983 Bear and Strings brute force greedy implementation math strings Statement B Codeforces Round 226 (Div. 2) {385} PROGRAMMING Codeforces Round #226 (Div. 2) — Editorial 1300
10874 Bear and Prime Numbers binary search brute force data structures dp implementation math number theory Statement C Codeforces Round 226 (Div. 2) {385} PROGRAMMING Codeforces Round #226 (Div. 2) — Editorial 1800
2564 Fly, freebies, fly! binary search brute force implementation Statement B Testing Round 9 {386} PROGRAMMING 1500
13099 George and Round brute force greedy two pointers Statement B Codeforces Round 227 (Div. 2) {387} PROGRAMMING Editorial Codeforces Round #227 (Div. 2) 1200
444 Word Folding brute force Statement B Rockethon 2014 {391} PROGRAMMING 5.0
214 The Tournament brute force Statement C1 Rockethon 2014 {391} PROGRAMMING 4.0
296 Supercollider brute force Statement D1 Rockethon 2014 {391} PROGRAMMING 3.0
2742 Counting Sticks brute force implementation Statement A Codeforces Round 231 (Div. 2) {394} PROGRAMMING 500.0
300 Physical Education and Buns brute force implementation math Statement D Codeforces Round 231 (Div. 2) {394} PROGRAMMING 2000.0
8709 Inna and New Matrix of Candies brute force implementation schedules Statement B Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 1300
4808 Roman and Numbers bitmasks brute force combinatorics dp number theory Statement D Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 2000
4014 Trees in a Row brute force implementation Statement B Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1400
6459 Searching for Graph brute force constructive algorithms graphs Statement C Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1500
5221 Triangle brute force geometry implementation math Statement A Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 1700
1259 Curious Array brute force combinatorics implementation math Statement C Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 2500
9603 A + B Strikes Back *special brute force constructive algorithms dsu implementation Statement H April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1700
9492 Art Union brute force dp implementation Statement B Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1300
640 Biathlon Track binary search brute force constructive algorithms data structures dp Statement D Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 2200
4205 Sereja and Swaps brute force sortings Statement A Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 1600
4163 Balls Game brute force two pointers Statement B Codeforces Round 245 (Div. 2) {430} PROGRAMMING Codeforces Round #245 — Editorial 1400
11871 Shower Line brute force implementation Statement B Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 1200
12345 Football Kit brute force greedy implementation Statement B Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 1200
18181 Kitahara Haruki's Gift brute force implementation Statement A Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 1200
861 Special Grid brute force dp greedy Statement D Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 2200
611 Banners brute force data structures dp Statement F Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 2900
4198 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
1157 One-Based Arithmetic brute force dfs and similar divide and conquer Statement C Testing Round 10 {440} PROGRAMMING 2000
2383 Borya and Hanabi bitmasks brute force implementation Statement A Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 2000
4306 Kolya and Tandem Repeat brute force implementation strings Statement B Codeforces Round 253 (Div. 2) {443} PROGRAMMING Codeforces #253 editorial 1500
3965 DZY Loves Modification brute force data structures greedy Statement B Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 2100
17378 Multiplication Table binary search brute force Statement D Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 1900
1976 Divisors brute force dfs and similar implementation number theory Statement E Codeforces Round 256 (Div. 2) {448} PROGRAMMING Codeforces Round #256 — Разбор 2500
3606 Predict Outcome of the Game brute force implementation math Statement C Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1700
8603 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
2134 4-point polyline brute force constructive algorithms geometry trees Statement B MemSQL Start[c]UP 2.0 - Round 1 {452} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 1800
5663 Little Pony and Harmony Chest bitmasks brute force dp Statement B Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 2200
986 Elections brute force Statement C MemSQL Start[c]UP 2.0 - Round 2 {457} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 2100
53238 Vasya and Socks brute force implementation math Statement A Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1000
13570 Little Dima and Equation brute force implementation math number theory Statement B Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1500
1063 Little Victor and Set brute force constructive algorithms math Statement D Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 2500
416 Roland and Rose brute force geometry math sortings Statement E Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 2700
17991 Appleman and Easy Task brute force implementation Statement A Codeforces Round 263 (Div. 2) {462} PROGRAMMING Tutorial 1100
30449 Caisa and Pylons brute force implementation math Statement B Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1200
9636 Caisa and Sugar brute force implementation Statement A Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1300
1799 Caisa and Tree brute force dfs and similar math number theory trees Statement E Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 2400
1803 Restore Cube brute force geometry Statement B Codeforces Round 265 (Div. 1) {464} PROGRAMMING Codeforces Round #265 Editorial 2200
43340 Number of Ways binary search brute force data structures dp two pointers Statement C Codeforces Round 266 (Div. 2) {466} PROGRAMMING Editorial Codeforces Round #266 (Div. 2) 1700
5364 Wonder Room brute force math Statement B Codeforces Round 266 (Div. 2) {466} PROGRAMMING Editorial Codeforces Round #266 (Div. 2) 1800
44073 Fedor and New Game bitmasks brute force constructive algorithms implementation Statement B Codeforces Round 267 (Div. 2) {467} PROGRAMMING Разбор задач 1200
3760 MUH and House of Cards binary search brute force greedy math Statement C Codeforces Round 269 (Div. 2) {471} PROGRAMMING Codeforces Round #269 Editorial 1700
509 Design Tutorial: Increase the Constraints bitmasks data structures fft Statement G Codeforces Round 270 {472} PROGRAMMING Editorial 2800
3441 Captain Marmot brute force geometry Statement C Codeforces Round 271 (Div. 2) {474} PROGRAMMING Codeforces Round #271 (Div. 2) Editorial 1900
9434 Strongly Connected City brute force dfs and similar graphs implementation Statement B Bayan 2015 Contest Warm Up {475} PROGRAMMING Bayan 2015 Contest Warm Up Editorial 1400
7096 CGCDSSQ brute force data structures math Statement D Bayan 2015 Contest Warm Up {475} PROGRAMMING Bayan 2015 Contest Warm Up Editorial 2000
864 Kamal-ol-molk's Painting brute force constructive algorithms greedy Statement C Bayan 2015 Contest Warm Up {475} PROGRAMMING Bayan 2015 Contest Warm Up Editorial 2100
38522 Dreamoon and WiFi bitmasks brute force combinatorics dp math probabilities Statement B Codeforces Round 272 (Div. 2) {476} PROGRAMMING 1300
261 Wavy numbers brute force dfs and similar meet-in-the-middle sortings Statement E Codeforces Round 273 (Div. 2) {478} PROGRAMMING Editorial 2700
116119 Expression brute force math Statement A Codeforces Round 274 (Div. 2) {479} PROGRAMMING Codeforces Round #274: editorial 1100
8543 Towers brute force constructive algorithms greedy implementation sortings Statement B Codeforces Round 274 (Div. 2) {479} PROGRAMMING Codeforces Round #274: editorial 1400
25169 Counterexample brute force implementation math number theory Statement A Codeforces Round 275 (Div. 2) {483} PROGRAMMING Codeforces Round #275 Editorial 1100
6834 Valuable Resources brute force greedy Statement B Codeforces Round 276 (Div. 2) {485} PROGRAMMING Codeforces Round #276 — Editorial 1300
12492 Palindrome Transformation brute force greedy implementation Statement C Codeforces Round 277 (Div. 2) {486} PROGRAMMING Codeforces Round #277(Div. 2) Editorial 1700
3987 Fight the Monster binary search brute force implementation Statement A Codeforces Round 278 (Div. 1) {487} PROGRAMMING Tutorial 1900
15047 Giga Tower brute force Statement A Codeforces Round 278 (Div. 2) {488} PROGRAMMING Codeforces Round #278 Editorial 1100
2267 Candy Boxes brute force constructive algorithms math Statement B Codeforces Round 278 (Div. 2) {488} PROGRAMMING Tutorial 1800
7142 Unbearable Controversy of Being brute force combinatorics dfs and similar graphs Statement D Codeforces Round 277.5 (Div. 2) {489} PROGRAMMING Codeforces Round #277.5 (Div. 2) Editorial [A-D for now] 1700
9545 Hacking Cypher brute force math number theory strings Statement C Codeforces Round 279 (Div. 2) {490} PROGRAMMING Codeforces Round #279 (Div. 2) Editorial 1700
2336 Chocolate brute force dfs and similar math meet-in-the-middle number theory Statement D Codeforces Round 279 (Div. 2) {490} PROGRAMMING Codeforces Round #279 (Div. 2) Editorial 1900
1730 Restoring Increasing Sequence binary search brute force greedy implementation Statement E Codeforces Round 279 (Div. 2) {490} PROGRAMMING Codeforces Round #279 (Div. 2) Editorial 2100
7608 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
17307 Minimum Difficulty brute force implementation math Statement A Codeforces Round 283 (Div. 2) {496} PROGRAMMING Codeforces Round #283: editorial (with bonuses!) 1000
6254 Secret Combination brute force constructive algorithms implementation Statement B Codeforces Round 283 (Div. 2) {496} PROGRAMMING 15208 1500
8231 Removing Columns brute force constructive algorithms implementation Statement C Codeforces Round 283 (Div. 2) {496} PROGRAMMING 15208 1600
253 Gears brute force geometry math Statement D Codeforces Round 283 (Div. 1) {497} PROGRAMMING 2800
6990 Mr. Kitayuta's Gift brute force implementation strings Statement A Codeforces Round 286 (Div. 2) {505} PROGRAMMING Tutorial 1200
2626 Mr. Kitayuta's Colorful Graph brute force dfs and similar dsu graphs Statement D Codeforces Round 286 (Div. 1) {506} PROGRAMMING Editorial 2300
8500 Pasha and Pixels brute force Statement A Codeforces Round 288 (Div. 2) {508} PROGRAMMING 1200
44914 Maximum in Table brute force implementation Statement A Codeforces Round 289 (Div. 2, ACM ICPC Rules) {509} PROGRAMMING Tutorial CodeForces Round 289 (Div.2) (Second Winter Computer Camp Selection 2015) 700
6642 Fox And Jumping bitmasks brute force dp math Statement D Codeforces Round 290 (Div. 2) {510} PROGRAMMING Codeforces Round #290 Editorial 2100
3863 Permutations brute force Statement B1 Rockethon 2015 {513} PROGRAMMING 16260 1500
1862 Inversions problem brute force dfs and similar dp meet-in-the-middle Statement G1 Rockethon 2015 {513} PROGRAMMING 16260 1800
22911 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
7829 Drazil and His Happy Friends brute force dsu meet-in-the-middle number theory Statement B Codeforces Round 292 (Div. 2) {515} PROGRAMMING Codeforces Round #292 Editorial 1400
445 Pasha and Pipe binary search brute force combinatorics dp implementation Statement F Codeforces Round 293 (Div. 2) {518} PROGRAMMING Codeforces Round #293 (Div.2) Editorial 2800
4431 Anya and Cubes binary search bitmasks brute force dp math meet-in-the-middle Statement E Codeforces Round 297 (Div. 2) {525} PROGRAMMING Codeforces Round #297 (Div.2) Editorial 2200
5078 King of Thieves brute force implementation Statement A ZeptoLab Code Rush 2015 {526} PROGRAMMING ZeptoLab Code Rush 2015 — Editorial 1300
2696 Om Nom and Candies brute force greedy math Statement C ZeptoLab Code Rush 2015 {526} PROGRAMMING ZeptoLab Code Rush 2015 — Editorial 2000
3024 Fuzzy Search bitmasks brute force fft Statement D Codeforces Round 296 (Div. 1) {528} PROGRAMMING Codeforces Round #296 Editorial 2500
1001 Group Photo 2 (online mirror version) brute force greedy sortings Statement B VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only) {529} PROGRAMMING VK Cup Round 1 (+ online mirror) editorial 1900
27216 Tavas and SaDDas bitmasks brute force combinatorics implementation Statement B Codeforces Round 299 (Div. 2) {535} PROGRAMMING Codeforces Round #299 Editorial 1100
13172 Tavas and Nafas brute force implementation Statement A Codeforces Round 299 (Div. 2) {535} PROGRAMMING Codeforces Round #299 Editorial 1100
7422 Cutting Banner brute force implementation Statement A Codeforces Round 300 {538} PROGRAMMING Codeforces Round #300 Editorial (+challenges) 1500
6176 Tourist's Notes binary search brute force greedy implementation math Statement C Codeforces Round 300 {538} PROGRAMMING Codeforces Round #300 Editorial (+challenges) 1600
2531 Weird Chess brute force constructive algorithms implementation Statement D Codeforces Round 300 {538} PROGRAMMING Codeforces Round #300 Editorial (+challenges) 1800
1891 A Heap of Heaps brute force data structures math sortings Statement F Codeforces Round 300 {538} PROGRAMMING Codeforces Round #300 Editorial (+challenges) 2200
18865 Soldier and Badges brute force greedy implementation sortings Statement B Codeforces Round 304 (Div. 2) {546} PROGRAMMING Codeforces Round #304 (Div.2) editorial 1300
19728 Soldier and Cards brute force dfs and similar games Statement C Codeforces Round 304 (Div. 2) {546} PROGRAMMING Codeforces Round #304 (Div.2) editorial 1400
247134 Soldier and Bananas brute force implementation math Statement A Codeforces Round 304 (Div. 2) {546} PROGRAMMING Codeforces Round #304 (Div.2) editorial 800
2808 Mike and Frog brute force greedy implementation math Statement A Codeforces Round 305 (Div. 1) {547} PROGRAMMING Codeforces Round #305 Editorial 1900
10412 Mike and Fax brute force implementation strings Statement A Codeforces Round 305 (Div. 2) {548} PROGRAMMING Codeforces Round #305 Editorial 1200
9122 Mike and Fun brute force dp greedy implementation Statement B Codeforces Round 305 (Div. 2) {548} PROGRAMMING Codeforces Round #305 Editorial 1400
29160 Preparing Olympiad bitmasks brute force Statement B Codeforces Round 306 (Div. 2) {550} PROGRAMMING Разбор задач Codeforces Round #306 (Div. 2) 1500
44812 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
32968 Divisibility by Eight brute force dp math Statement C Codeforces Round 306 (Div. 2) {550} PROGRAMMING Разбор задач Codeforces Round #306 (Div. 2) 1500
18005 GukiZ and Contest brute force implementation sortings Statement A Codeforces Round 307 (Div. 2) {551} PROGRAMMING Tutorial 1000
4088 ZgukistringZ brute force constructive algorithms implementation strings Statement B Codeforces Round 307 (Div. 2) {551} PROGRAMMING Tutorial 1800
5913 Vanya and Scales brute force dp greedy math meet-in-the-middle number theory Statement C Codeforces Round 308 (Div. 2) {552} PROGRAMMING Codeforces #308 (Div. 2) Editorial 1800
4897 Vanya and Triangles brute force combinatorics data structures geometry math sortings Statement D Codeforces Round 308 (Div. 2) {552} PROGRAMMING Codeforces #308 (Div. 2) Editorial 1900
1773 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
11143 Ohana Cleans Up brute force greedy strings Statement B Codeforces Round 309 (Div. 2) {554} PROGRAMMING Codeforces Round #309 Editorial 1200
14710 Kyoya and Photobooks brute force math strings Statement A Codeforces Round 309 (Div. 2) {554} PROGRAMMING Codeforces Round #309 Editorial 900
8283 Case of Fake Numbers brute force implementation Statement B Codeforces Round 310 (Div. 2) {556} PROGRAMMING Codeforces Round #310 Editorial 1100
4263 Arthur and Table brute force data structures dp greedy math sortings Statement C Codeforces Round 311 (Div. 2) {557} PROGRAMMING Codeforces Round #311 (Div.2) Editorial 1900
11099 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
4244 Amr and Chemistry brute force graphs greedy math shortest paths Statement C Codeforces Round 312 (Div. 2) {558} PROGRAMMING Codeforces Round #312 (Div. 2) Editorial 2000
11133 Gerald's Hexagon brute force geometry math Statement A Codeforces Round 313 (Div. 1) {559} PROGRAMMING Codeforces Round 313 — Extended editoral 1600
5436 Primes or Palindromes? brute force implementation math number theory Statement A Codeforces Round 315 (Div. 1) {568} PROGRAMMING Codeforces Round #315 Editorial 1700
352 Sign Posts brute force geometry math Statement D Codeforces Round 315 (Div. 1) {568} PROGRAMMING Codeforces Round #315 Editorial 2800
8454 Bear and Three Musketeers brute force dfs and similar graphs hashing Statement B Codeforces Round 318 [RussianCodeCup Thanks-Round] (Div. 2) {574} PROGRAMMING Codeforces Round #318 [RussianCodeCup Thanks-Round] Editorial 1500
245 Party bitmasks brute force graph matchings Statement C Bubble Cup 8 - Finals [Online Mirror] {575} PROGRAMMING Bubble Cup finals 2015 Results and Editorial 2800
5542 "Or" Game brute force greedy Statement B Codeforces Round 320 (Div. 1) [Bayan Thanks-Round] {578} PROGRAMMING Codeforces Round #320 [Bayan Thanks-Round] Editorial 1800
5528 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
109960 Kefa and First Steps brute force dp implementation Statement A Codeforces Round 321 (Div. 2) {580} PROGRAMMING Codeforces Round #321 Editorial 1000
5019 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
11443 Dima and Lisa brute force math number theory Statement D Codeforces Round 324 (Div. 2) {584} PROGRAMMING Tutorial 1700
4488 Gennady the Dentist brute force implementation Statement A Codeforces Round 325 (Div. 1) {585} PROGRAMMING Разбор Codeforces Round #325 1800
6213 2Char brute force implementation Statement A Codeforces Round 329 (Div. 2) {593} PROGRAMMING Codeforces Round #329 (Editorial) 1200
785 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
6331 Chocolate Bar brute force dp Statement E Educational Codeforces Round 1 {598} PROGRAMMING 2000
2743 Spongebob and Squares brute force math Statement D Codeforces Round 332 (Div. 2) {599} PROGRAMMING Editorial Codeforces Round #332 (Div. 2) 1800
8835 Two Bases brute force implementation Statement A Codeforces Round 333 (Div. 2) {602} PROGRAMMING Codeforces Round #333 — editorial 1200
11334 New Year and Old Property bitmasks brute force implementation Statement B Good Bye 2015 {611} PROGRAMMING Tutorial 1300
7939 The Text Splitting brute force implementation strings Statement A Educational Codeforces Round 4 {612} PROGRAMMING 22299 1300
2512 Skills binary search brute force dp greedy sortings two pointers Statement B Codeforces Round 339 (Div. 1) {613} PROGRAMMING Tutorial 2200
7875 Link/Cut Tree brute force implementation Statement A Codeforces Round 339 (Div. 2) {614} PROGRAMMING Tutorial 1500
1128 Rat Kwesh and Cheese brute force constructive algorithms math Statement D Codeforces Round 341 (Div. 2) {621} PROGRAMMING Editorial 2200
6974 Robot Sequence brute force implementation Statement A 8VC Venture Cup 2016 - Elimination Round {626} PROGRAMMING 23522 1000
4647 Block Towers brute force greedy math number theory Statement C 8VC Venture Cup 2016 - Elimination Round {626} PROGRAMMING 23522 1600
3277 Jerry's Protest brute force combinatorics dp probabilities Statement D 8VC Venture Cup 2016 - Elimination Round {626} PROGRAMMING 23522 1800
8387 Far Relative’s Problem brute force Statement B Codeforces Round 343 (Div. 2) {629} PROGRAMMING Editorial of Codeforces Round #343 (Div.2) 1200
15063 Far Relative’s Birthday Cake brute force combinatorics constructive algorithms implementation Statement A Codeforces Round 343 (Div. 2) {629} PROGRAMMING Editorial of Codeforces Round #343 (Div.2) 800
9814 Interview brute force implementation Statement A Codeforces Round 344 (Div. 2) {631} PROGRAMMING Editorial Codeforces Round #344 (Div. 2) 1000
4453 Alice, Bob, Two Teams brute force constructive algorithms Statement B Educational Codeforces Round 9 {632} PROGRAMMING 43493 1400
4758 Longest Subsequence brute force math number theory Statement D Educational Codeforces Round 9 {632} PROGRAMMING 43493 2200
1349 Magic Matrix brute force divide and conquer graphs matrices trees Statement F Educational Codeforces Round 9 {632} PROGRAMMING 43493 2400
15078 Ebony and Ivory brute force math number theory Statement A Manthan, Codefest 16 {633} PROGRAMMING Manthan, Codefest 16: Editorials 1200
7341 A Trivial Problem brute force constructive algorithms math number theory Statement B Manthan, Codefest 16 {633} PROGRAMMING Manthan, Codefest 16: Editorials 1300
3095 Fibonacci-ish brute force dp hashing implementation math Statement D Manthan, Codefest 16 {633} PROGRAMMING Manthan, Codefest 16: Editorials 2000
3286 Orchestra brute force implementation Statement A 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) {635} PROGRAMMING 8VC Venture Cup 2016 — Final Round Editorial 1200
2542 Promocodes with Mistakes *special brute force constructive algorithms implementation Statement C VK Cup 2016 - Qualification Round 1 {637} PROGRAMMING 1800
815 Three-dimensional Turtle Super Computer brute force dfs and similar graphs Statement D VK Cup 2016 - Qualification Round 2 {638} PROGRAMMING 2200
3209 Little Artem and Dance brute force constructive algorithms implementation Statement C VK Cup 2016 - Round 2 {641} PROGRAMMING VK Cup 2016 — Раунд 2 (editorial) 1800
3833 Amity Assessment brute force constructive algorithms implementation Statement A CROC 2016 - Elimination Round {645} PROGRAMMING Editorial for CROC 2016 Elimination Round 1200
3522 Image Preview binary search brute force dp two pointers Statement B Codeforces Round 345 (Div. 1) {650} PROGRAMMING Codeforces Round #345: editorial 1900
9402 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
5428 Bear and Compressing brute force dfs and similar dp strings Statement B IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) {653} PROGRAMMING IndiaHacks Finals 2016 — Editorial 1300
1786 Bear and Up-Down brute force implementation Statement C IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) {653} PROGRAMMING IndiaHacks Finals 2016 — Editorial 1900
2685 Binary Table bitmasks brute force divide and conquer dp fft math Statement C CROC 2016 - Final Round [Private, For Onsite Finalists Only] {662} PROGRAMMING Editorial for CROC 2016 Finals and Codeforces Round #347 2800
285 To Hack or not to Hack brute force dp greedy Statement E CROC 2016 - Final Round [Private, For Onsite Finalists Only] {662} PROGRAMMING Editorial for CROC 2016 Finals and Codeforces Round #347 2800
3930 Shopping brute force Statement B Educational Codeforces Round 12 {665} PROGRAMMING 1400
423 Chain Reaction brute force geometry Statement D Codeforces Round 349 (Div. 1) {666} PROGRAMMING Codeforces Round #349 Editorial 3000
18939 Holidays brute force constructive algorithms greedy math Statement A Codeforces Round 350 (Div. 2) {670} PROGRAMMING Codeforces Round #350 (Div.2) Editorial 1000
25584 Magic Powder - 1 binary search brute force implementation Statement D1 Codeforces Round 350 (Div. 2) {670} PROGRAMMING Codeforces Round #350 (Div.2) Editorial 1400
942 Restore a Number brute force constructive algorithms strings Statement F Codeforces Round 350 (Div. 2) {670} PROGRAMMING Codeforces Round #350 (Div.2) Editorial 2200
7800 Restoring Painting brute force constructive algorithms math Statement B Codeforces Round 353 (Div. 2) {675} PROGRAMMING Tutorial 1400
815 Vanya and Balloons binary search brute force dp implementation Statement E Codeforces Round 355 (Div. 2) {677} PROGRAMMING Codeforces Round #355 (Div. 2) Editorial 2600
407 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
9561 Economy Game brute force Statement B Codeforces Round 357 (Div. 2) {681} PROGRAMMING 45425 1300
4525 Robbers' watch brute force combinatorics dp math Statement A Codeforces Round 359 (Div. 1) {685} PROGRAMMING Codeforces Round #359 Editorial 1700
560 Kay and Eternity brute force implementation sortings Statement D Codeforces Round 359 (Div. 1) {685} PROGRAMMING Codeforces Round #359 Editorial 2600
682 Travelling Through the Snow Queen's Kingdom bitmasks brute force divide and conquer graphs Statement E Codeforces Round 359 (Div. 1) {685} PROGRAMMING Codeforces Round #359 Editorial 2700
1168 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
5533 Mike and Cellphone brute force constructive algorithms implementation Statement A Codeforces Round 361 (Div. 2) {689} PROGRAMMING Tutorial 1400
1488 Couple Cover brute force dp number theory Statement F Educational Codeforces Round 14 {691} PROGRAMMING Editorial of Educational Codeforces Round 14 2300
6526 Lorenzo Von Matterhorn brute force data structures implementation trees Statement A Codeforces Round 362 (Div. 1) {696} PROGRAMMING Codeforces Round #362 (Editorial) 1500
6065 Barnicle brute force implementation math strings Statement B Codeforces Round 362 (Div. 2) {697} PROGRAMMING 1400
625 Limak and Shooting Points brute force geometry Statement D Codeforces Round 363 (Div. 1) {698} PROGRAMMING 46148 2800
14063 Powers of Two brute force data structures implementation math Statement B Educational Codeforces Round 15 {702} PROGRAMMING 46324 1500
10388 Thor brute force data structures implementation Statement A Codeforces Round 366 (Div. 1) {704} PROGRAMMING Tutorial 1600
15471 Beru-taxi brute force geometry implementation Statement A Codeforces Round 367 (Div. 2) {706} PROGRAMMING Tutorial 1100
10736 Optimal Point on a Line brute force sortings Statement B Educational Codeforces Round 16 {710} PROGRAMMING Editorial of Educational Codeforces Round 16 1400
2747 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
31162 Bus to Udayland brute force implementation Statement A Codeforces Round 369 (Div. 2) {711} PROGRAMMING 46830 700
7006 Broken Clock brute force implementation Statement A Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) {722} PROGRAMMING Tutorial 1300
4271 Batch Sort brute force greedy implementation math Statement B Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined) {724} PROGRAMMING Tutorial 1500
2957 Hidden Word brute force constructive algorithms implementation strings Statement C Canada Cup 2016 {725} PROGRAMMING Canada Cup Editorial 1600
744 Too Much Money brute force greedy Statement E Canada Cup 2016 {725} PROGRAMMING 2500
18904 Transformation: from A to B brute force dfs and similar math Statement A Technocup 2017 - Elimination Round 1 (Unofficially Open for Everyone, Rated for Div. 2) {727} PROGRAMMING Tutorial 1100
3201 Video Cards brute force data structures implementation math number theory Statement F Codeforces Round 376 (Div. 2) {731} PROGRAMMING 47840 1900
1309 80-th Level Archeology brute force data structures greedy sortings Statement D Codeforces Round 376 (Div. 2) {731} PROGRAMMING 47840 2200
92374 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
32396 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
2878 Gosha is hunting brute force data structures dp flows math probabilities sortings Statement E Codeforces Round 381 (Div. 1) {739} PROGRAMMING 48582 2900
9210 Alyona and copybooks brute force implementation Statement A Codeforces Round 381 (Div. 2) {740} PROGRAMMING Tutorial 1300
10170 Arpa’s obvious problem and Mehrdad’s terrible solution brute force math number theory Statement B Codeforces Round 383 (Div. 2) {742} PROGRAMMING Test data 1500
13618 Vladik and fractions brute force constructive algorithms math number theory Statement C Codeforces Round 384 (Div. 2) {743} PROGRAMMING Codeforces Round #384 Editorial 1500
1667 Vladik and cards binary search bitmasks brute force dp Statement E Codeforces Round 384 (Div. 2) {743} PROGRAMMING Codeforces Round #384 Editorial 2300
1380 Hongcow Buys a Deck of Cards bitmasks brute force dp Statement C Codeforces Round 385 (Div. 1) {744} PROGRAMMING Codeforces Round #385 Editorial 2500
11341 Display Size brute force math Statement A Codeforces Round 387 (Div. 2) {747} PROGRAMMING 49171 1000
525 Igor and Interesting Numbers brute force combinatorics dp math Statement F Codeforces Round 387 (Div. 2) {747} PROGRAMMING 49171 2600
9022 Parallelogram is Back brute force constructive algorithms geometry Statement B Codeforces Round 388 (Div. 2) {749} PROGRAMMING Tutorial 1300
3180 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
637 New Year and Binary Tree Paths bitmasks brute force combinatorics dp Statement G Good Bye 2016 {750} PROGRAMMING Good Bye 2016 — hints and codes 3100
96036 New Year and Hurry binary search brute force implementation math Statement A Good Bye 2016 {750} PROGRAMMING Good Bye 2016 — hints and codes 800
1460 Interactive Bulls and Cows (Easy) brute force constructive algorithms implementation Statement B Testing Round 13 {753} PROGRAMMING 1600
476 Interactive Bulls and Cows (Hard) brute force constructive algorithms interactive Statement C Testing Round 13 {753} PROGRAMMING 2400
7629 Ilya and tic-tac-toe game brute force implementation Statement B Codeforces Round 390 (Div. 2) {754} PROGRAMMING Editorial 1200
1123 Vladik and chat brute force constructive algorithms dp implementation strings Statement C Codeforces Round 390 (Div. 2) {754} PROGRAMMING 2200
626 Dasha and cyclic table bitmasks brute force fft strings trees Statement E Codeforces Round 390 (Div. 2) {754} PROGRAMMING 2800
20281 PolandBall and Hypothesis brute force graphs math number theory Statement A 8VC Venture Cup 2017 - Elimination Round {755} PROGRAMMING 8VC Venture Cup 2017 — Elimination Round [Editorial] 900
1171 Bacterial Melee brute force combinatorics dp string suffix structures Statement D 8VC Venture Cup 2017 - Final Round {756} PROGRAMMING 8VC Venture Cup 2017 — Final Round and Codeforces Round #393 Editorial 2500
1647 Bash Plays with Functions brute force combinatorics dp number theory Statement E 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 2400
10793 Blown Garland brute force implementation number theory Statement B Codeforces Round 392 (Div. 2) {758} PROGRAMMING Codeforces Round #392 (Div. 2) Editorial 1200
763 Geometrical Progression brute force math number theory Statement F Codeforces Round 392 (Div. 2) {758} PROGRAMMING Codeforces Round #392 (Div. 2) Editorial 2500
15252 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
7087 Dasha and friends brute force implementation math Statement B Codeforces Round 394 (Div. 2) {761} PROGRAMMING Codeforces Round #394 (Div. 2) [Editorial] 1300
6062 Dasha and Password brute force dp implementation Statement C Codeforces Round 394 (Div. 2) {761} PROGRAMMING Codeforces Round #394 (Div. 2) [Editorial] 1600
4236 Dasha and Very Difficult Problem binary search brute force constructive algorithms greedy sortings Statement D Codeforces Round 394 (Div. 2) {761} PROGRAMMING Codeforces Round #394 (Div. 2) [Editorial] 1700
755 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
821 Timofey and remoduling brute force implementation math number theory Statement C Codeforces Round 395 (Div. 1) {763} PROGRAMMING Codeforces Round #395 [Editorial] 2500
17229 Taymyr is calling you brute force implementation math Statement A Codeforces Round 395 (Div. 2) {764} PROGRAMMING Codeforces Round #395 [Editorial] 800
121 Math, math everywhere brute force dp math meet-in-the-middle number theory Statement G Codeforces Round 397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) {765} PROGRAMMING Codeforces Round #397 Editorial 2800
4982 Mahmoud and a Message brute force dp greedy strings Statement C Codeforces Round 396 (Div. 2) {766} PROGRAMMING Codeforces round #396 editorial 1700
2280 The Queue brute force greedy Statement B Codeforces Round 398 (Div. 2) {767} PROGRAMMING Codeforces Round #398 (Div. 2) Editorial 2000
4239 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
1161 Barrels and boxes brute force combinatorics math number theory probabilities Statement F 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) 2300
2585 k-Interesting Pairs Of Integers *special bitmasks brute force meet-in-the-middle Statement D VK Cup 2017 - Qualification 1 {769} PROGRAMMING Tutorial 1800
1302 Dynamic Problem Scoring brute force greedy Statement B VK Cup 2017 - Round 3 {773} PROGRAMMING VK Cup 2017 Round 3 + Codeforces Round #412 -- Tutorial 2100
6326 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
12981 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
4938 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
2567 Bitwise Formula bitmasks brute force dfs and similar expression parsing implementation Statement B Codeforces Round 402 (Div. 1) {778} PROGRAMMING Codeforces Round #402, Editorial 2000
1031 Peterson Polyglot brute force dfs and similar dsu hashing strings trees Statement C Codeforces Round 402 (Div. 1) {778} PROGRAMMING Codeforces Round #402, Editorial 2600
10784 Weird Rounding brute force greedy Statement B Codeforces Round 402 (Div. 2) {779} PROGRAMMING Codeforces Round #402, Editorial 1100
2058 Twisted Circuit *special brute force implementation Statement E April Fools Contest 2017 {784} PROGRAMMING 51351 2000
2306 Anton and Permutation brute force data structures Statement E Codeforces Round 404 (Div. 2) {785} PROGRAMMING 2300
12290 The Monster brute force math number theory Statement A Codeforces Round 406 (Div. 2) {787} PROGRAMMING Codeforces Round #406 Editorial 1300
5091 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
8042 Bank Robbery brute force implementation Statement A Tinkoff Challenge - Final Round (Codeforces Round 414, rated, Div. 1 + Div. 2) {794} PROGRAMMING 900
13923 Buying A House brute force implementation Statement A Codeforces Round 408 (Div. 2) {796} PROGRAMMING Tutorial 900
6046 Array Queries brute force data structures dp Statement E Educational Codeforces Round 19 {797} PROGRAMMING 51588 2000
24276 Mike and palindrome brute force constructive algorithms strings Statement A Codeforces Round 410 (Div. 2) {798} PROGRAMMING Codeforces Round #410 (Div. 2) Editorial 1100
9378 Mike and strings brute force dp strings Statement B Codeforces Round 410 (Div. 2) {798} PROGRAMMING Codeforces Round #410 (Div. 2) Editorial 1300