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221 Tree and Array constructive algorithms Statement C Codeforces Round 233 (Div. 1) {398} PROGRAMMING 1500.0 Codeforces Round #233 Editorial
124 Sorting Permutations Statement E Codeforces Round 233 (Div. 1) {398} PROGRAMMING 2500.0 Codeforces Round #233 Editorial
1190 Painting The Wall dp probabilities Statement B Codeforces Round 233 (Div. 1) {398} PROGRAMMING 1000.0 Codeforces Round #233 Editorial
1265 Instant Messanger data structures Statement D Codeforces Round 233 (Div. 1) {398} PROGRAMMING 2000.0 Codeforces Round #233 Editorial
962 Cards constructive algorithms implementation Statement A Codeforces Round 233 (Div. 1) {398} PROGRAMMING 500.0 Codeforces Round #233 Editorial
1883 Red and Blue Balls Statement B Codeforces Round 233 (Div. 2) {399} PROGRAMMING 1000.0 Codeforces Round #233 Editorial
4230 Pages implementation Statement A Codeforces Round 233 (Div. 2) {399} PROGRAMMING 500.0 Codeforces Round #233 Editorial
6862 Inna and Choose Options implementation Statement A Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 1000
8595 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
3006 Inna and Huge Candy Matrix implementation math Statement C Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 1500
3166 Dima and Bacteria dsu graphs shortest paths Statement D Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 2000
1040 Inna and Binary Logic binary search bitmasks data structures Statement E Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 2400
4597 Sereja and Contests greedy implementation math Statement B Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 1200
21677 Team constructive algorithms greedy implementation Statement C Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 1400
4562 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
172 Olympic Games math Statement E Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 2500
17407 Vanya and Cards implementation math Statement A Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 900
4875 Nuts greedy math Statement A Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1200
3992 Trees in a Row brute force implementation Statement B Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1400
6363 Searching for Graph brute force constructive algorithms graphs Statement C Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1500
2787 Upgrading Array dp greedy math number theory Statement D Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 2000
2328 Strictly Positive Matrix graphs math Statement E Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 2200
1233 Beautiful Pairs of Numbers combinatorics dp Statement D Codeforces Round 236 (Div. 1) {403} PROGRAMMING Editorial Codeforces Round #236 2200
242 Two Rooted Trees data structures implementation trees Statement E Codeforces Round 236 (Div. 1) {403} PROGRAMMING Editorial Codeforces Round #236 2900
26174 Valera and X implementation Statement A Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 1100
3047 Marathon implementation math Statement B Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 1500
5784 Restore Graph dfs and similar graphs sortings Statement C Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 1800
2464 Minesweeper 1D dp implementation Statement D Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 2200
641 Maze 1D binary search greedy implementation Statement E Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 2700
125999 Gravity Flip greedy implementation sortings Statement A Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1000
6106 Domino Effect Statement B Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1200
4929 Unusual Product implementation math Statement C Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1600
3287 Toy Sum greedy implementation math Statement D Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1900
1600 Graph Cutting dfs and similar graphs Statement E Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 2400
1265 Hill Climbing dfs and similar geometry trees Statement D Codeforces Round 238 (Div. 1) {406} PROGRAMMING Codeforces Round #238 Tutorial 2200
272 Hamming Triples implementation math two pointers Statement E Codeforces Round 238 (Div. 1) {406} PROGRAMMING Codeforces Round #238 Tutorial 2700
5167 Triangle brute force geometry implementation math Statement A Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 1700
7158 Long Path dp implementation Statement B Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 1800
1189 Curious Array brute force combinatorics implementation math Statement C Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 2500
804 Largest Submatrix 3 dp hashing Statement D Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 2600
970 k-d-sequence data structures Statement E Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 3100
10282 Garland implementation Statement B Codeforces Round 239 (Div. 2) {408} PROGRAMMING Codeforces Round #239 Editorial 1200
11970 Line to Cashier implementation Statement A Codeforces Round 239 (Div. 2) {408} PROGRAMMING Codeforces Round #239 Editorial 900
2623 The Great Game *special Statement A April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1700
2136 Magnum Opus *special Statement C April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1700
9485 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
1428 Mysterious Language *special Statement B April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1800
1803 Big Data *special Statement D April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2000
618 Dome *special Statement E April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2100
2173 000001 *special Statement F April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2300
561 On a plane *special Statement G April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2600
155 Feed the Golorp *special Statement I April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2900
8093 Password Check implementation Statement A Coder-Strike 2014 - Qualification Round {411} PROGRAMMING Coder-Strike 2014: Qualification Round (Tutorial) 1800
1398 Multi-core Processor implementation Statement B Coder-Strike 2014 - Qualification Round {411} PROGRAMMING Coder-Strike 2014: Qualification Round (Tutorial) 2000
1293 Kicker implementation Statement C Coder-Strike 2014 - Qualification Round {411} PROGRAMMING Coder-Strike 2014: Qualification Round (Tutorial) 2100
4951 Poster greedy implementation Statement A Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1000
6351 Network Configuration greedy sortings Statement B Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1000
4213 Pattern implementation strings Statement C Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1300
938 E-mail Addresses implementation Statement E Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1800
2429 Giving Awards dfs and similar Statement D Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1900
2965 Data Recovery implementation Statement A Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 1200
1843 Spyke Chatting implementation Statement B Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 1300
2676 Jeopardy! greedy math Statement C Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 1400
848 Maze 2D data structures divide and conquer Statement E Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 2100
908 2048 bitmasks dp Statement D Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 2100
10554 Mashmokh and Numbers constructive algorithms number theory Statement A Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 1500
29082 Mashmokh and ACM combinatorics dp number theory Statement B Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 1500
748 Mashmokh and Water Tanks binary search data structures greedy trees two pointers Statement D Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 2300
2357 Mashmokh and Reverse Operation combinatorics divide and conquer Statement C Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 2400
211 Mashmokh's Designed Problem data structures Statement E Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 3100
6685 Mashmokh and Tokens binary search greedy implementation math Statement B Codeforces Round 240 (Div. 2) {415} PROGRAMMING Codeforces Round #240 Editorial 1500
9584 Mashmokh and Lights implementation Statement A Codeforces Round 240 (Div. 2) {415} PROGRAMMING Codeforces Round #240 Editorial 900
9345 Art Union brute force dp implementation Statement B Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1300
10003 Guess a number! greedy implementation two pointers Statement A Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1400
8694 Booking System binary search dp greedy implementation Statement C Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1600
1090 Population Size greedy implementation math Statement D Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 2300
1798 President's Path dp graphs shortest paths Statement E Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 2400
2021 Crash implementation Statement B RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 1400
5049 Football constructive algorithms graphs implementation Statement C RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 1500
3408 Elimination dp implementation math Statement A RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 1500
2909 Cunning Gena bitmasks dp greedy sortings Statement D RCC 2014 Warmup (Div. 2) {417} PROGRAMMING 2000
929 Square Table constructive algorithms math probabilities Statement E RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 2400
546 Big Problems for Organizers data structures graphs trees Statement D RCC 2014 Warmup (Div. 1) {418} PROGRAMMING RCC 2014 WarmUp Analysis 2700
351 Tricky Password data structures Statement E RCC 2014 Warmup (Div. 1) {418} PROGRAMMING RCC 2014 WarmUp Analysis 3100
7026 Start Up implementation Statement A Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 1100
1170 Online Meeting implementation Statement B Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 1800
1393 Bug in Code data structures graphs implementation two pointers Statement C Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 1900
266 Playing the ball geometry Statement E Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 2500
997 Cup Trick data structures Statement D Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 2500
694 Bug in Code binary search data structures sortings Statement D Coder-Strike 2014 - Finals (online edition, Div. 2) {421} PROGRAMMING Editorial Coder-Strike 2014 Finals 2100
6879 Pasha and Hamsters constructive algorithms implementation Statement A Coder-Strike 2014 - Finals (online edition, Div. 2) {421} PROGRAMMING Editorial Coder-Strike 2014 Finals 800
9173 Squats implementation Statement A Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 1000
8459 Megacity binary search greedy implementation sortings Statement B Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 1200
5944 Magic Formulas math Statement C Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 1600
608 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
149 Colored Jenga dfs and similar dp probabilities Statement E Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 2500
4155 Sereja and Swaps brute force sortings Statement A Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 1600
1628 Sereja and Squares binary search data structures hashing Statement D Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2300
982 Sereja and Two Sequences data structures dp Statement C Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2400
1411 Sereja and Table bitmasks greedy Statement B Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2400
803 Sereja and Sets dp Statement E Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2500
3958 Sereja and Mirroring implementation Statement B Codeforces Round 243 (Div. 2) {426} PROGRAMMING Codeforces Round #243 tutorial 1300
9940 Sereja and Mugs implementation Statement A Codeforces Round 243 (Div. 2) {426} PROGRAMMING Codeforces Round #243 tutorial 800
15503 Prison Transfer data structures implementation Statement B Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 1100
16821 Checkposts dfs and similar graphs two pointers Statement C Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 1700
1608 Police Patrol greedy implementation math ternary search Statement E Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 2000
2419 Match & Catch dp string suffix structures strings Statement D Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 2000
96905 Police Recruits implementation Statement A Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 800
12229 Xor-tree dfs and similar trees Statement A Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 1500
10185 Working out dp Statement B Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 1800
3227 Tricky Function data structures divide and conquer geometry Statement D Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 2100
1030 Guess the Tree bitmasks constructive algorithms dp greedy trees Statement C Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 2400
977 Points and Segments graphs Statement E Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 2900
4114 Balls Game brute force two pointers Statement B Codeforces Round 245 (Div. 2) {430} PROGRAMMING Codeforces Round #245 — Editorial 1400
2405 Points and Segments (easy) constructive algorithms sortings Statement A Codeforces Round 245 (Div. 2) {430} PROGRAMMING Codeforces Round #245 — Editorial 1600
11660 Shower Line brute force implementation Statement B Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 1200
29677 k-Tree dp implementation trees Statement C Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 1600
2873 Random Task binary search bitmasks combinatorics dp math Statement D Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 2200
1185 Chemistry Experiment binary search data structures ternary search Statement E Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 2500
65735 Black Square implementation Statement A Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 700
12254 Football Kit brute force greedy implementation Statement B Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 1200
2674 Prime Swaps greedy sortings Statement C Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 1800
11849 Prefixes and Suffixes dp string suffix structures strings two pointers Statement D Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 2000
791 Square Tiling constructive algorithms greedy Statement E Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 2700
69309 Choosing Teams greedy implementation sortings Statement A Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 900
53492 Kuriyama Mirai's Stones dp implementation sortings Statement B Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 1200
17876 Kitahara Haruki's Gift brute force implementation Statement A Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 1200
2619 Ryouko's Memory Note implementation math sortings Statement C Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 1900
1317 Nanami's Digital Board dsu implementation Statement D Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 2300
532 Tachibana Kanade's Tofu dp Statement E Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 2500
518 Nanami's Power Plant flows Statement D Codeforces Round 248 (Div. 1) {434} PROGRAMMING Codeforces Round #248 Editorial 2800
311 Furukawa Nagisa's Tree binary search divide and conquer sortings trees Statement E Codeforces Round 248 (Div. 1) {434} PROGRAMMING Codeforces Round #248 Editorial 3000
11050 Queue on Bus Stop implementation Statement A Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 1100
7554 Pasha Maximizes greedy Statement B Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 1500
2724 Cardiogram implementation Statement C Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 1600
788 Special Grid brute force dp greedy Statement D Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 2200
259 Special Graph Statement E Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 2500
3147 Om Nom and Spiders implementation math Statement B Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 1400
3785 Feed with Candy greedy Statement A Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 1500
2883 Dungeons and Candies dsu graphs greedy trees Statement C Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 1800
1821 Cardboard Box data structures greedy Statement E Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 2500
352 Pudding Monsters dp Statement D Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 2700
457 Banners brute force data structures dp Statement F Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 2900
9355 The Child and Homework implementation Statement A Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 1400
10430 The Child and Set bitmasks greedy implementation sortings Statement B Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 1500
14982 The Child and Toy graphs greedy sortings Statement C Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 1600
3666 The Child and Zoo dsu sortings Statement D Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 2100
786 The Child and Polygon dp geometry Statement E Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 2600
11514 The Child and Sequence data structures math Statement D Codeforces Round 250 (Div. 1) {438} PROGRAMMING Tutorial 2300
2127 The Child and Binary Tree combinatorics divide and conquer fft number theory Statement E Codeforces Round 250 (Div. 1) {438} PROGRAMMING Tutorial 3100
26606 Devu, the Singer and Churu, the Joker greedy implementation Statement A Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 1100
15014 Devu, the Dumb Guy implementation sortings Statement B Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 1200
4170 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
6832 Devu and his Brother binary search sortings ternary search two pointers Statement D Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 1900
1836 Devu and Birthday Celebration combinatorics dp math Statement E Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 2600
8890 Forgotten Episode implementation Statement A Testing Round 10 {440} PROGRAMMING 1000
2325 Balancer greedy implementation Statement B Testing Round 10 {440} PROGRAMMING 1600
1139 One-Based Arithmetic brute force dfs and similar divide and conquer Statement C Testing Round 10 {440} PROGRAMMING 2000
940 Berland Federalization dp trees Statement D Testing Round 10 {440} PROGRAMMING 2600
19286 Valera and Antique Items implementation Statement A Codeforces Round 252 (Div. 2) {441} PROGRAMMING Разбор Codeforces Round #252 (Div. 2) 1000
7506 Valera and Fruits greedy implementation Statement B Codeforces Round 252 (Div. 2) {441} PROGRAMMING 12615 1400
11913 Valera and Tubes constructive algorithms dfs and similar implementation Statement C Codeforces Round 252 (Div. 2) {441} PROGRAMMING 12615 1500
1199 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
815 Valera and Number bitmasks dp math probabilities Statement E Codeforces Round 252 (Div. 2) {441} PROGRAMMING Разбор Codeforces Round #252 (Div. 2) 2700
6098 Andrey and Problem greedy math probabilities Statement B Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 1800
2352 Borya and Hanabi bitmasks brute force implementation Statement A Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 2000
1949 Artem and Array data structures greedy Statement C Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 2500
1131 Adam and Tree data structures trees Statement D Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 2500
195 Gena and Second Distance geometry Statement E Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 3100
4270 Kolya and Tandem Repeat brute force implementation strings Statement B Codeforces Round 253 (Div. 2) {443} PROGRAMMING Codeforces #253 editorial 1500
111552 Anton and Letters constructive algorithms implementation Statement A Codeforces Round 253 (Div. 2) {443} PROGRAMMING Codeforces #253 editorial 800
3577 DZY Loves Physics greedy math Statement A Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 1800
3355 DZY Loves Colors data structures Statement C Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2300
861 DZY Loves Strings binary search hashing strings two pointers Statement D Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2400
1171 DZY Loves FFT probabilities Statement B Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2400
856 DZY Loves Planting binary search dsu trees Statement E Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2600
33583 DZY Loves Chessboard dfs and similar implementation Statement A Codeforces Round 254 (Div. 2) {445} PROGRAMMING Codeforces Round #254 Editorial 1200
14718 DZY Loves Chemistry dfs and similar dsu greedy Statement B Codeforces Round 254 (Div. 2) {445} PROGRAMMING Codeforces Round #254 Editorial 1500
13517 DZY Loves Sequences dp implementation two pointers Statement A Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 1700
3855 DZY Loves Modification brute force data structures greedy Statement B Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 2100
3922 DZY Loves Fibonacci Numbers data structures math number theory Statement C Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 2600
464 DZY Loves Games math matrices probabilities Statement D Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 2800
143 DZY Loves Bridges math matrices Statement E Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 3100
21018 DZY Loves Strings greedy implementation Statement B Codeforces Round #FF (Div. 2) {447} PROGRAMMING Codeforces Round #FF(255) Editorial 1000
10263 DZY Loves Hash implementation Statement A Codeforces Round #FF (Div. 2) {447} PROGRAMMING Codeforces Round #FF(255) Editorial 900
17303 Suffix Structures implementation strings Statement B Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 1400
10767 Painting Fence divide and conquer dp greedy Statement C Codeforces Round 256 (Div. 2) {448} PROGRAMMING Codeforces Round #256 — Разбор 1900
16616 Multiplication Table binary search brute force Statement D Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 1900
1635 Divisors brute force dfs and similar implementation number theory Statement E Codeforces Round 256 (Div. 2) {448} PROGRAMMING Codeforces Round #256 — Разбор 2500
25853 Rewards implementation Statement A Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 900
4125 Jzzhu and Chocolate greedy math Statement A Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 1700
10553 Jzzhu and Cities graphs greedy shortest paths Statement B Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2000
6122 Jzzhu and Numbers bitmasks combinatorics dp Statement D Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2400
2526 Jzzhu and Apples constructive algorithms number theory Statement C Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2500
305 Jzzhu and Squares dp math number theory Statement E Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2900
43742 Jzzhu and Children implementation Statement A Codeforces Round 257 (Div. 2) {450} PROGRAMMING Codeforces Round #257 Editorial 1000
28790 Jzzhu and Sequences implementation math Statement B Codeforces Round 257 (Div. 2) {450} PROGRAMMING Codeforces Round #257 Editorial 1400
75511 Game With Sticks implementation Statement A Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1000
52715 Sort the Array implementation sortings Statement B Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1300
3578 Predict Outcome of the Game brute force implementation math Statement C Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1700
5058 Count Good Substrings math Statement D Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 2100
4507 Devu and Flowers bitmasks combinatorics number theory Statement E Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 2400
8510 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
2106 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
1666 Washer, Dryer, Folder greedy implementation Statement D MemSQL Start[c]UP 2.0 - Round 1 {452} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 1900
1750 Magic Trick combinatorics math probabilities Statement C MemSQL Start[c]UP 2.0 - Round 1 {452} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 2100
1197 Three strings data structures dsu string suffix structures strings Statement E MemSQL Start[c]UP 2.0 - Round 1 {452} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 2400
1794 Permutation data structures divide and conquer hashing Statement F MemSQL Start[c]UP 2.0 - Round 1 {452} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 2600
12398 Little Pony and Expected Maximum probabilities Statement A Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 1600
5385 Little Pony and Harmony Chest bitmasks brute force dp Statement B Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 2200
1741 Little Pony and Summer Sun Celebration constructive algorithms dfs and similar graphs Statement C Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 2800
576 Little Pony and Elements of Harmony dp matrices Statement D Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 2900
909 Little Pony and Lord Tirek data structures Statement E Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 3000
19155 Little Pony and Sort by Shift implementation Statement B Codeforces Round 259 (Div. 2) {454} PROGRAMMING Codeforces Round #259 Editorial 1300
16108 Little Pony and Crystal Mine implementation Statement A Codeforces Round 259 (Div. 2) {454} PROGRAMMING Codeforces Round #259 Editorial 800
71597 Boredom dp Statement A Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 1600
6819 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
6456 Civilization dfs and similar dp dsu ternary search trees Statement C Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2200
3644 Serega and Fun data structures Statement D Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2600
785 Function data structures Statement E Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2800
56566 Laptops sortings Statement A Codeforces Round 260 (Div. 2) {456} PROGRAMMING Разбор задач 1200
18531 Fedya and Maths math number theory Statement B Codeforces Round 260 (Div. 2) {456} PROGRAMMING Codeforces Round #260 — Editorial 1200
1375 Golden System math meet-in-the-middle Statement A MemSQL Start[c]UP 2.0 - Round 2 {457} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 1800
1210 Distributed Join greedy Statement B MemSQL Start[c]UP 2.0 - Round 2 {457} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 1900
945 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
389 Bingo! combinatorics math probabilities Statement D MemSQL Start[c]UP 2.0 - Round 2 {457} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 2700
126 An easy problem about trees dp games greedy trees Statement F MemSQL Start[c]UP 2.0 - Round 2 {457} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 3000
121 Flow Optimality constructive algorithms flows math Statement E MemSQL Start[c]UP 2.0 - Round 2 {457} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 3200
36355 Pashmak and Garden implementation Statement A Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1300
47386 Pashmak and Flowers combinatorics implementation sortings Statement B Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1300
12749 Pashmak and Parmida's problem data structures divide and conquer sortings Statement D Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1800
6481 Pashmak and Buses combinatorics constructive algorithms math Statement C Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1900
5968 Pashmak and Graph dp sortings Statement E Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 2100
51938 Vasya and Socks brute force implementation math Statement A Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1000
13362 Little Dima and Equation brute force implementation math number theory Statement B Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1500
6760 Present binary search data structures greedy Statement C Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1900
1036 Little Victor and Set brute force constructive algorithms math Statement D Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 2500
382 Roland and Rose brute force geometry math sortings Statement E Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 2700
16430 Appleman and Toastman greedy sortings Statement A Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 1200
6997 Appleman and Tree dfs and similar dp trees Statement B Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 2200
1392 Appleman and a Sheet of Paper data structures implementation Statement C Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 2500
401 Appleman and Complicated Task dsu math Statement D Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 2700
516 Appleman and a Game binary search shortest paths strings Statement E Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 3000
17859 Appleman and Easy Task brute force implementation Statement A Codeforces Round 263 (Div. 2) {462} PROGRAMMING Tutorial 1100
15550 Appleman and Card Game greedy Statement B Codeforces Round 263 (Div. 2) {462} PROGRAMMING Tutorial 1300
29933 Caisa and Pylons brute force implementation math Statement B Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1200
9558 Caisa and Sugar brute force implementation Statement A Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1300
9169 Gargari and Bishops greedy hashing implementation Statement C Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1800
7285 Gargari and Permutations dfs and similar dp graphs implementation Statement D Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 2000
1741 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