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222 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
1220 Painting The Wall dp probabilities Statement B Codeforces Round 233 (Div. 1) {398} PROGRAMMING 1000.0 Codeforces Round #233 Editorial
1357 Instant Messanger data structures Statement D Codeforces Round 233 (Div. 1) {398} PROGRAMMING 2000.0 Codeforces Round #233 Editorial
967 Cards constructive algorithms implementation Statement A Codeforces Round 233 (Div. 1) {398} PROGRAMMING 500.0 Codeforces Round #233 Editorial
1924 Red and Blue Balls Statement B Codeforces Round 233 (Div. 2) {399} PROGRAMMING 1000.0 Codeforces Round #233 Editorial
4246 Pages implementation Statement A Codeforces Round 233 (Div. 2) {399} PROGRAMMING 500.0 Codeforces Round #233 Editorial
6955 Inna and Choose Options implementation Statement A Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 1000
8702 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
3035 Inna and Huge Candy Matrix implementation math Statement C Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 1500
3291 Dima and Bacteria dsu graphs shortest paths Statement D Codeforces Round 234 (Div. 2) {400} PROGRAMMING Codeforces Round #234 (Div. 2) — Tutorial 2000
1078 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
4643 Sereja and Contests greedy implementation math Statement B Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 1200
22057 Team constructive algorithms greedy implementation Statement C Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 1400
4794 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
17592 Vanya and Cards implementation math Statement A Codeforces Round 235 (Div. 2) {401} PROGRAMMING Codeforces Round #235 (Div. 2) — Tutorial 900
4926 Nuts greedy math Statement A Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1200
4014 Trees in a Row brute force implementation Statement B Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1400
6454 Searching for Graph brute force constructive algorithms graphs Statement C Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 1500
2815 Upgrading Array dp greedy math number theory Statement D Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 2000
2373 Strictly Positive Matrix graphs math Statement E Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 2200
1261 Beautiful Pairs of Numbers combinatorics dp Statement D Codeforces Round 236 (Div. 1) {403} PROGRAMMING Editorial Codeforces Round #236 2200
280 Two Rooted Trees data structures implementation trees Statement E Codeforces Round 236 (Div. 1) {403} PROGRAMMING Editorial Codeforces Round #236 2900
26508 Valera and X implementation Statement A Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 1100
3066 Marathon implementation math Statement B Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 1500
5888 Restore Graph dfs and similar graphs sortings Statement C Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 1800
2504 Minesweeper 1D dp implementation Statement D Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 2200
666 Maze 1D binary search greedy implementation Statement E Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 2700
131343 Gravity Flip greedy implementation sortings Statement A Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1000
6154 Domino Effect Statement B Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1200
4977 Unusual Product implementation math Statement C Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1600
3302 Toy Sum greedy implementation math Statement D Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 1900
1667 Graph Cutting dfs and similar graphs Statement E Codeforces Round 238 (Div. 2) {405} PROGRAMMING Codeforces Round #238 Tutorial 2400
1326 Hill Climbing dfs and similar geometry trees Statement D Codeforces Round 238 (Div. 1) {406} PROGRAMMING Codeforces Round #238 Tutorial 2200
407 Hamming Triples implementation math two pointers Statement E Codeforces Round 238 (Div. 1) {406} PROGRAMMING Codeforces Round #238 Tutorial 2700
5219 Triangle brute force geometry implementation math Statement A Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 1700
7249 Long Path dp implementation Statement B Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 1800
1259 Curious Array brute force combinatorics implementation math Statement C Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 2500
847 Largest Submatrix 3 dp hashing Statement D Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 2600
1372 k-d-sequence data structures Statement E Codeforces Round 239 (Div. 1) {407} PROGRAMMING Codeforces Round #239 Editorial 3100
10471 Garland implementation Statement B Codeforces Round 239 (Div. 2) {408} PROGRAMMING Codeforces Round #239 Editorial 1200
12148 Line to Cashier implementation Statement A Codeforces Round 239 (Div. 2) {408} PROGRAMMING Codeforces Round #239 Editorial 900
2642 The Great Game *special Statement A April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1700
2149 Magnum Opus *special Statement C April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1700
9599 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
1436 Mysterious Language *special Statement B April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 1800
1814 Big Data *special Statement D April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2000
622 Dome *special Statement E April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2100
2189 000001 *special Statement F April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2300
576 On a plane *special Statement G April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2600
169 Feed the Golorp *special Statement I April Fools Day Contest 2014 {409} PROGRAMMING April Fools Day Contest 2014: editorial 2900
8234 Password Check implementation Statement A Coder-Strike 2014 - Qualification Round {411} PROGRAMMING Coder-Strike 2014: Qualification Round (Tutorial) 1800
1428 Multi-core Processor implementation Statement B Coder-Strike 2014 - Qualification Round {411} PROGRAMMING Coder-Strike 2014: Qualification Round (Tutorial) 2000
1306 Kicker implementation Statement C Coder-Strike 2014 - Qualification Round {411} PROGRAMMING Coder-Strike 2014: Qualification Round (Tutorial) 2100
5095 Poster greedy implementation Statement A Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1000
6518 Network Configuration greedy sortings Statement B Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1000
4276 Pattern implementation strings Statement C Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1300
949 E-mail Addresses implementation Statement E Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1800
2526 Giving Awards dfs and similar Statement D Coder-Strike 2014 - Round 1 {412} PROGRAMMING Editorial of Coder-Strike 2014 Round 1 1900
3044 Data Recovery implementation Statement A Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 1200
1868 Spyke Chatting implementation Statement B Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 1300
2704 Jeopardy! greedy math Statement C Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 1400
881 Maze 2D data structures divide and conquer Statement E Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 2100
944 2048 bitmasks dp Statement D Coder-Strike 2014 - Round 2 {413} PROGRAMMING Editorial of Coder-Strike 2014 Round 2 2100
10641 Mashmokh and Numbers constructive algorithms number theory Statement A Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 1500
30962 Mashmokh and ACM combinatorics dp number theory Statement B Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 1500
783 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
2416 Mashmokh and Reverse Operation combinatorics divide and conquer Statement C Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 2400
267 Mashmokh's Designed Problem data structures Statement E Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 3100
6742 Mashmokh and Tokens binary search greedy implementation math Statement B Codeforces Round 240 (Div. 2) {415} PROGRAMMING Codeforces Round #240 Editorial 1500
9692 Mashmokh and Lights implementation Statement A Codeforces Round 240 (Div. 2) {415} PROGRAMMING Codeforces Round #240 Editorial 900
9490 Art Union brute force dp implementation Statement B Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1300
10193 Guess a number! greedy implementation two pointers Statement A Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1400
8843 Booking System binary search dp greedy implementation Statement C Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1600
1165 Population Size greedy implementation math Statement D Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 2300
1925 President's Path dp graphs shortest paths Statement E Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 2400
2049 Crash implementation Statement B RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 1400
5124 Football constructive algorithms graphs implementation Statement C RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 1500
3449 Elimination dp implementation math Statement A RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 1500
3017 Cunning Gena bitmasks dp greedy sortings Statement D RCC 2014 Warmup (Div. 2) {417} PROGRAMMING 2000
1004 Square Table constructive algorithms math probabilities Statement E RCC 2014 Warmup (Div. 2) {417} PROGRAMMING RCC 2014 WarmUp Analysis 2400
591 Big Problems for Organizers data structures graphs trees Statement D RCC 2014 Warmup (Div. 1) {418} PROGRAMMING RCC 2014 WarmUp Analysis 2700
468 Tricky Password data structures Statement E RCC 2014 Warmup (Div. 1) {418} PROGRAMMING RCC 2014 WarmUp Analysis 3100
7207 Start Up implementation Statement A Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 1100
1179 Online Meeting implementation Statement B Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 1800
1437 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
329 Playing the ball geometry Statement E Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 2500
1039 Cup Trick data structures Statement D Coder-Strike 2014 - Finals (online edition, Div. 1) {420} PROGRAMMING Editorial Coder-Strike 2014 Finals 2500
730 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
6985 Pasha and Hamsters constructive algorithms implementation Statement A Coder-Strike 2014 - Finals (online edition, Div. 2) {421} PROGRAMMING Editorial Coder-Strike 2014 Finals 800
9378 Squats implementation Statement A Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 1000
8535 Megacity binary search greedy implementation sortings Statement B Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 1200
6033 Magic Formulas math Statement C Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 1600
639 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
151 Colored Jenga dfs and similar dp probabilities Statement E Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 2500
4202 Sereja and Swaps brute force sortings Statement A Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 1600
1679 Sereja and Squares binary search data structures hashing Statement D Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2300
1025 Sereja and Two Sequences data structures dp Statement C Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2400
1450 Sereja and Table bitmasks greedy Statement B Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2400
852 Sereja and Sets dp Statement E Codeforces Round 243 (Div. 1) {425} PROGRAMMING Codeforces Round #243 tutorial 2500
3985 Sereja and Mirroring implementation Statement B Codeforces Round 243 (Div. 2) {426} PROGRAMMING Codeforces Round #243 tutorial 1300
10095 Sereja and Mugs implementation Statement A Codeforces Round 243 (Div. 2) {426} PROGRAMMING Codeforces Round #243 tutorial 800
15633 Prison Transfer data structures implementation Statement B Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 1100
17861 Checkposts dfs and similar graphs two pointers Statement C Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 1700
1671 Police Patrol greedy implementation math ternary search Statement E Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 2000
2754 Match & Catch dp string suffix structures strings Statement D Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 2000
100871 Police Recruits implementation Statement A Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 800
12514 Xor-tree dfs and similar trees Statement A Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 1500
10580 Working out dp Statement B Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 1800
3283 Tricky Function data structures divide and conquer geometry Statement D Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 2100
1064 Guess the Tree bitmasks constructive algorithms dp greedy trees Statement C Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 2400
1048 Points and Segments graphs Statement E Codeforces Round 245 (Div. 1) {429} PROGRAMMING Codeforces Round #245 — Editorial 2900
4160 Balls Game brute force two pointers Statement B Codeforces Round 245 (Div. 2) {430} PROGRAMMING Codeforces Round #245 — Editorial 1400
2433 Points and Segments (easy) constructive algorithms sortings Statement A Codeforces Round 245 (Div. 2) {430} PROGRAMMING Codeforces Round #245 — Editorial 1600
11853 Shower Line brute force implementation Statement B Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 1200
30895 k-Tree dp implementation trees Statement C Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 1600
2987 Random Task binary search bitmasks combinatorics dp math Statement D Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 2200
1229 Chemistry Experiment binary search data structures ternary search Statement E Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 2500
68102 Black Square implementation Statement A Codeforces Round 247 (Div. 2) {431} PROGRAMMING Editorial Codeforces Round #247 (Div. 2) 700
12340 Football Kit brute force greedy implementation Statement B Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 1200
2698 Prime Swaps greedy sortings Statement C Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 1800
12853 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
814 Square Tiling constructive algorithms greedy Statement E Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 2700
71139 Choosing Teams greedy implementation sortings Statement A Codeforces Round 246 (Div. 2) {432} PROGRAMMING Codeforces Round #246 (Div. 2) Editorial 900
57218 Kuriyama Mirai's Stones dp implementation sortings Statement B Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 1200
18166 Kitahara Haruki's Gift brute force implementation Statement A Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 1200
2642 Ryouko's Memory Note implementation math sortings Statement C Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 1900
1345 Nanami's Digital Board dsu implementation Statement D Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 2300
577 Tachibana Kanade's Tofu dp Statement E Codeforces Round 248 (Div. 2) {433} PROGRAMMING Codeforces Round #248 Editorial 2500
614 Nanami's Power Plant flows Statement D Codeforces Round 248 (Div. 1) {434} PROGRAMMING Codeforces Round #248 Editorial 2800
538 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
11229 Queue on Bus Stop implementation Statement A Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 1100
7644 Pasha Maximizes greedy Statement B Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 1500
2759 Cardiogram implementation Statement C Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 1600
861 Special Grid brute force dp greedy Statement D Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 2200
288 Special Graph Statement E Codeforces Round 249 (Div. 2) {435} PROGRAMMING Codeforces Round #249 (Div. 2) Editorial 2500
3180 Om Nom and Spiders implementation math Statement B Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 1400
3812 Feed with Candy greedy Statement A Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 1500
2949 Dungeons and Candies dsu graphs greedy trees Statement C Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 1800
2090 Cardboard Box data structures greedy Statement E Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 2500
376 Pudding Monsters dp Statement D Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 2700
610 Banners brute force data structures dp Statement F Zepto Code Rush 2014 {436} PROGRAMMING Zepto Code Rush 2014 — solutions A-D 2900
9458 The Child and Homework implementation Statement A Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 1400
10573 The Child and Set bitmasks greedy implementation sortings Statement B Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 1500
15158 The Child and Toy graphs greedy sortings Statement C Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 1600
3746 The Child and Zoo dsu sortings Statement D Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 2100
873 The Child and Polygon dp geometry Statement E Codeforces Round 250 (Div. 2) {437} PROGRAMMING 12513 2600
12589 The Child and Sequence data structures math Statement D Codeforces Round 250 (Div. 1) {438} PROGRAMMING Tutorial 2300
2380 The Child and Binary Tree combinatorics divide and conquer fft number theory Statement E Codeforces Round 250 (Div. 1) {438} PROGRAMMING Tutorial 3100
26806 Devu, the Singer and Churu, the Joker greedy implementation Statement A Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 1100
15110 Devu, the Dumb Guy implementation sortings Statement B Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 1200
4197 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
7265 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
1931 Devu and Birthday Celebration combinatorics dp math Statement E Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 2600
9108 Forgotten Episode implementation Statement A Testing Round 10 {440} PROGRAMMING 1000
2360 Balancer greedy implementation Statement B Testing Round 10 {440} PROGRAMMING 1600
1155 One-Based Arithmetic brute force dfs and similar divide and conquer Statement C Testing Round 10 {440} PROGRAMMING 2000
1018 Berland Federalization dp trees Statement D Testing Round 10 {440} PROGRAMMING 2600
19506 Valera and Antique Items implementation Statement A Codeforces Round 252 (Div. 2) {441} PROGRAMMING Разбор Codeforces Round #252 (Div. 2) 1000
7570 Valera and Fruits greedy implementation Statement B Codeforces Round 252 (Div. 2) {441} PROGRAMMING 12615 1400
12080 Valera and Tubes constructive algorithms dfs and similar implementation Statement C Codeforces Round 252 (Div. 2) {441} PROGRAMMING 12615 1500
1269 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
844 Valera and Number bitmasks dp math probabilities Statement E Codeforces Round 252 (Div. 2) {441} PROGRAMMING Разбор Codeforces Round #252 (Div. 2) 2700
6301 Andrey and Problem greedy math probabilities Statement B Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 1800
2383 Borya and Hanabi bitmasks brute force implementation Statement A Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 2000
2034 Artem and Array data structures greedy Statement C Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 2500
1265 Adam and Tree data structures trees Statement D Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 2500
215 Gena and Second Distance geometry Statement E Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 3100
4305 Kolya and Tandem Repeat brute force implementation strings Statement B Codeforces Round 253 (Div. 2) {443} PROGRAMMING Codeforces #253 editorial 1500
116730 Anton and Letters constructive algorithms implementation Statement A Codeforces Round 253 (Div. 2) {443} PROGRAMMING Codeforces #253 editorial 800
3603 DZY Loves Physics greedy math Statement A Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 1800
3494 DZY Loves Colors data structures Statement C Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2300
901 DZY Loves Strings binary search hashing strings two pointers Statement D Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2400
1201 DZY Loves FFT probabilities Statement B Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2400
919 DZY Loves Planting binary search dsu trees Statement E Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2600
34428 DZY Loves Chessboard dfs and similar implementation Statement A Codeforces Round 254 (Div. 2) {445} PROGRAMMING Codeforces Round #254 Editorial 1200
15531 DZY Loves Chemistry dfs and similar dsu greedy Statement B Codeforces Round 254 (Div. 2) {445} PROGRAMMING Codeforces Round #254 Editorial 1500
13729 DZY Loves Sequences dp implementation two pointers Statement A Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 1700
3964 DZY Loves Modification brute force data structures greedy Statement B Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 2100
4104 DZY Loves Fibonacci Numbers data structures math number theory Statement C Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 2600
518 DZY Loves Games math matrices probabilities Statement D Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 2800
208 DZY Loves Bridges math matrices Statement E Codeforces Round #FF (Div. 1) {446} PROGRAMMING Codeforces Round #FF(255) Editorial 3100
21153 DZY Loves Strings greedy implementation Statement B Codeforces Round #FF (Div. 2) {447} PROGRAMMING Codeforces Round #FF(255) Editorial 1000
10363 DZY Loves Hash implementation Statement A Codeforces Round #FF (Div. 2) {447} PROGRAMMING Codeforces Round #FF(255) Editorial 900
17729 Suffix Structures implementation strings Statement B Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 1400
11196 Painting Fence divide and conquer dp greedy Statement C Codeforces Round 256 (Div. 2) {448} PROGRAMMING Codeforces Round #256 — Разбор 1900
17339 Multiplication Table binary search brute force Statement D Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 1900
1973 Divisors brute force dfs and similar implementation number theory Statement E Codeforces Round 256 (Div. 2) {448} PROGRAMMING Codeforces Round #256 — Разбор 2500
26240 Rewards implementation Statement A Codeforces Round 256 (Div. 2) {448} PROGRAMMING Tutorial 900
4166 Jzzhu and Chocolate greedy math Statement A Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 1700
11416 Jzzhu and Cities graphs greedy shortest paths Statement B Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2000
6603 Jzzhu and Numbers bitmasks combinatorics dp Statement D Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2400
2639 Jzzhu and Apples constructive algorithms number theory Statement C Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2500
357 Jzzhu and Squares dp math number theory Statement E Codeforces Round 257 (Div. 1) {449} PROGRAMMING Codeforces Round #257 Editorial 2900
46900 Jzzhu and Children implementation Statement A Codeforces Round 257 (Div. 2) {450} PROGRAMMING Codeforces Round #257 Editorial 1000
29315 Jzzhu and Sequences implementation math Statement B Codeforces Round 257 (Div. 2) {450} PROGRAMMING Codeforces Round #257 Editorial 1400
77635 Game With Sticks implementation Statement A Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1000
54568 Sort the Array implementation sortings Statement B Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1300
3606 Predict Outcome of the Game brute force implementation math Statement C Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 1700
5133 Count Good Substrings math Statement D Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 2100
4835 Devu and Flowers bitmasks combinatorics number theory Statement E Codeforces Round 258 (Div. 2) {451} PROGRAMMING Codeforces Round #258 Editorial 2400
8597 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
2130 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
1670 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
1848 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
1243 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
1880 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
13095 Little Pony and Expected Maximum probabilities Statement A Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 1600
5650 Little Pony and Harmony Chest bitmasks brute force dp Statement B Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 2200
1841 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
685 Little Pony and Elements of Harmony dp matrices Statement D Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 2900
1049 Little Pony and Lord Tirek data structures Statement E Codeforces Round 259 (Div. 1) {453} PROGRAMMING Codeforces Round #259 Editorial 3000
19289 Little Pony and Sort by Shift implementation Statement B Codeforces Round 259 (Div. 2) {454} PROGRAMMING Codeforces Round #259 Editorial 1300
16296 Little Pony and Crystal Mine implementation Statement A Codeforces Round 259 (Div. 2) {454} PROGRAMMING Codeforces Round #259 Editorial 800
75702 Boredom dp Statement A Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 1600
7175 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
6662 Civilization dfs and similar dp dsu ternary search trees Statement C Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2200
3914 Serega and Fun data structures Statement D Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2600
867 Function data structures Statement E Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2800
58799 Laptops sortings Statement A Codeforces Round 260 (Div. 2) {456} PROGRAMMING Разбор задач 1200
18965 Fedya and Maths math number theory Statement B Codeforces Round 260 (Div. 2) {456} PROGRAMMING Codeforces Round #260 — Editorial 1200
1425 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
1216 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
980 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
435 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
128 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
134 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
37039 Pashmak and Garden implementation Statement A Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1300
48998 Pashmak and Flowers combinatorics implementation sortings Statement B Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1300
13949 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
6528 Pashmak and Buses combinatorics constructive algorithms math Statement C Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 1900
6057 Pashmak and Graph dp sortings Statement E Codeforces Round 261 (Div. 2) {459} PROGRAMMING Codeforces Round #261 Editorial 2100
53127 Vasya and Socks brute force implementation math Statement A Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1000
13550 Little Dima and Equation brute force implementation math number theory Statement B Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1500
6940 Present binary search data structures greedy Statement C Codeforces Round 262 (Div. 2) {460} PROGRAMMING 13465 1900
1062 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
16592 Appleman and Toastman greedy sortings Statement A Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 1200
7421 Appleman and Tree dfs and similar dp trees Statement B Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 2200
1428 Appleman and a Sheet of Paper data structures implementation Statement C Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 2500
491 Appleman and Complicated Task dsu math Statement D Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 2700
753 Appleman and a Game binary search shortest paths strings Statement E Codeforces Round 263 (Div. 1) {461} PROGRAMMING Tutorial 3000
17985 Appleman and Easy Task brute force implementation Statement A Codeforces Round 263 (Div. 2) {462} PROGRAMMING Tutorial 1100
15745 Appleman and Card Game greedy Statement B Codeforces Round 263 (Div. 2) {462} PROGRAMMING Tutorial 1300
30401 Caisa and Pylons brute force implementation math Statement B Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1200
9632 Caisa and Sugar brute force implementation Statement A Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1300
9285 Gargari and Bishops greedy hashing implementation Statement C Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 1800
7495 Gargari and Permutations dfs and similar dp graphs implementation Statement D Codeforces Round 264 (Div. 2) {463} PROGRAMMING CF 264 Div 2 Tutorial 2000
1796 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