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Dynamic Programming problems
Problem Name Online Judge Year Contest Difficulty Level
1 DNA Sequences Categories SPOJ 1
2 Histogram Categories SPOJ 1
3 Flowers Categories Codeforces Codeforces Round #271 (Div. 2) 1
4 Distinct Subsequences Categories SPOJ 1
5 Maximum Sum Categories Timus 1
6 Watermelon Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
7 LATGACH3 Categories SPOJ 1
8 Philosophers Stone Categories SPOJ 1
9 A+B Problem Categories PKU 1
10 Tri graphs Categories SPOJ 1
11 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
12 Strategic Defense Initiative Categories UVA 1
13 K-based Numbers Categories Timus 1
14 Chat room Categories Codeforces Codeforces Beta Round #54 (Div. 2) 1
15 The jackpot Categories UVA 1
16 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 1
17 Chop Ahoy! Revisited! Categories SPOJ 1
18 Square Country Categories Timus 1
19 Largest Submatrix Categories UVA 1
20 Permutations Categories SPOJ 1
21 Making Change Categories TJU 1
22 Divisibility by Eight Categories Codeforces Codeforces Round #306 (Div. 2) 1
23 Jill Rides Again Categories UVA 1
24 ShorterSuperSum Categories TopCoder SRM 467 - Div2 easy] (14151) 1
25 Dreamoon and WiFi Categories Codeforces Codeforces Round #272 (Div. 2) 1
26 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
27 Fibonacci Freeze Categories UVA 1
28 Pilots Categories SPOJ 1
29 Kuriyama Mirai's Stones Categories Codeforces Codeforces Round #248 (Div. 2) 1
30 Binary Apple Tree Categories Timus 1
31 Equal Sum Sets Categories Live Archive 2013 Asia - Aizu 1
32 Joysticks Categories Codeforces Codeforces Round #345 (Div. 2) 1
33 Cutting Sticks Categories UVA 1
34 Black or White Categories SPOJ 1
35 Candy Categories SPOJ 1
36 Bridging signals Categories Live Archive 2003 Europe - Northwestern 1
37 Flipping Game Categories Codeforces Codeforces Round #191 (Div. 2) 1
38 In Danger Categories SPOJ 1
39 Metro Categories Timus 1
40 Let Me Count The Ways Categories UVA 1
41 Candy Categories Live Archive 2008 Latin America - South America 1
42 Longest Run on a Snowboard Categories UVA 1
43 Sums in a Triangle Categories SPOJ 1
44 Robot Instructions Categories UVA 1
45 Pocket Money Categories SPOJ 1
46 Hotels Along the Croatian Coast Categories SPOJ 1
47 Wedding shopping Categories UVA 1
48 0110SS Categories SPOJ 1
49 Chocolate Categories SPOJ 1
50 Party Schedule Categories SPOJ 1
51 Adjacent Bit Counts Categories SPOJ 1
52 Save Thy Toys Categories SPOJ 1
53 Scuba diver Categories SPOJ 1
54 Cormen --- The Best Friend Of a Man Categories Codeforces Codeforces Round #377 (Div. 2) 1
55 ABC Path Categories SPOJ 1
56 Quasi Binary Categories Codeforces Codeforces Round #300 1
57 Drazil and Factorial Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 1
58 Tiling Up Blocks Categories Live Archive 2003 Asia - Kaohsiung 1
59 Two Ends Categories SPOJ 1
60 Mixtures Categories SPOJ 1
61 THE DRUNK JAILER Categories PKU 1
62 Enormous Input Test Categories CodeChef 1
63 How do you add? Categories UVA 1
64 Getting in Line Categories UVA 1
65 Sums in a Triangle Categories CodeChef 1
66 Generations of Tribbles Categories Live Archive 2013 North America - Pacific Northwest 1
67 Staircases Categories Timus 1
68 Roads Categories SPOJ 1
69 The Bale Tower Categories TJU 1
70 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 1
71 XOR Maximization Categories SPOJ 1
72 Bee Walk Categories SPOJ 1
73 Cross-country Categories SPOJ 1
74 Dollars Categories UVA 1
75 Can you answer these queries I Categories SPOJ 1
76 Tower of Babylon Categories SPOJ 1
77 Wachovia Bank Categories SPOJ 1
78 Compromise Categories UVA 1
79 Positive or Negative Categories A2 Online Judge 1
80 Flags Categories Timus 1
81 Coin Change Categories UVA 1
82 Vertex Cover Categories SPOJ 1
83 Easy Longest Increasing Subsequence Categories SPOJ 1
84 Omar Categories A2 Online Judge 1
85 Square Brackets Categories SPOJ 1
86 BLAST Categories SPOJ 1
87 Luggage Categories UVA 1
88 Simple Math Categories A2 Online Judge 1
89 COSTLY CHESS Categories SPOJ 1
90 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
91 Palindrome 2000 Categories SPOJ 1
92 Lucky Tickets Categories Timus 1
93 Building Bridges Categories SPOJ 1
94 Kefa and First Steps Categories Codeforces Codeforces Round #321 (Div. 2) 1
95 MAXIMUM WOOD CUTTER Categories SPOJ 1
96 Woodcutters Categories Codeforces Codeforces Round #303 (Div. 2) 1
97 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
98 DIE HARD Categories SPOJ 1
99 Pearls Categories Live Archive 2002 Europe - Northwestern 1
100 Longest Palindrome Categories UVA 1
101 BerSU Ball Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
102 New Year and Hurry Categories Codeforces Good Bye 2016 1
103 Two Substrings Categories Codeforces Codeforces Round #306 (Div. 2) 1
104 To the Max Categories PKU 1
105 Tile Code Categories Live Archive 2007 Asia - Seoul 1
106 Fishmonger Categories SPOJ 1
107 Treats for the Cows Categories SPOJ 1
108 Anton and Danik Categories Codeforces Codeforces Round #379 (Div. 2) 1
109 Summing to a Square Prime Categories SPOJ 1
110 Hangover Categories PKU 1
111 Phidias Categories SPOJ 1
112 Boredom Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 1
113 Prime Permutations Categories CodeChef 1
114 Rectangles Perimeter Categories SPOJ 1
115 Maximum Sum Categories UVA 1
116 Collecting Beepers Categories UVA 1
117 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
118 Trip Planning Categories Live Archive 2008 Asia - Taipei 1
119 Grandpa's Walk Categories Live Archive 2012 Asia - Jakarta 1
120 Testing the CATCHER Categories UVA 1
121 Aibohphobia Categories SPOJ 1
122 Magic Grid Categories SPOJ 1
123 The Great Ball Categories SPOJ 1
124 Puzzles Categories Codeforces Codeforces Round #196 (Div. 2) 1
125 Binary Lexicographic Sequence Categories Timus 1
126 Non-Decreasing Digits Categories SPOJ 1
127 Rent your airplane and make money Categories SPOJ 1
128 Martian Mining Categories SPOJ 1
129 The Double HeLiX Categories SPOJ 1
130 Scientific Conference Categories Timus 1
131 Optimal Array Multiplication Sequence Categories UVA 1
132 Assignments Categories SPOJ 1
133 The Twin Towers Categories UVA 1
134 Alphacode Categories Live Archive 2004 North America - East Central NA 1
135 Sereja and Suffixes Categories Codeforces Codeforces Round #215 (Div. 2) 1
136 Unidirectional TSP Categories UVA 1
137 The Knapsack Problem Categories SPOJ 1
138 No Change Categories SPOJ 1
139 SuperSale Categories UVA 1
140 Cleaning Robot Categories SPOJ 1
141 Fibonacci Words Categories Live Archive 2012 World Finals - Warsaw 1
142 Ingenuous Cubrency Categories UVA 1
143 Fool the Police Categories SPOJ 1
144 Training for final Categories SPOJ 1
145 Longest Common Subsequence Categories UVA 1
146 Feynman Categories SPOJ 1
147 Binary Search Tree Categories Live Archive 2010 Asia - Daejeon 1
148 QAQ Categories Codeforces Codeforces Round #447 (Div. 2) 1
149 Sweet and Sour Rock Categories SPOJ 1
150 Edit distance Categories SPOJ 1
151 Blueberries Categories SPOJ 1
152 Trip Categories SPOJ 1
153 Ilya and Queries Categories Codeforces Codeforces Round #186 (Div. 2) 1
154 Bytelandian gold coins Categories SPOJ 1
155 Exponentiation Categories PKU 1
156 Sum of Digits Categories SPOJ 1
157 23 out of 5 Categories UVA 1
158 Vacation Categories UVA 1
159 K-based Numbers. Version 2 Categories Timus 1
160 The Tower of Babylon Categories UVA 1
161 Perfection Categories UVA 1
162 Coins Game Categories SPOJ 1
163 Number of Ways Categories Codeforces Codeforces Round #266 (Div. 2) 1
164 Milliard Vasya's Function Categories Timus 1
165 Seinfeld Categories SPOJ 1
166 Take the Land Categories UVA 1
167 Divisibility Categories UVA 1
168 Piggy-Bank Categories SPOJ 1
169 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
170 Mashmokh and ACM Categories Codeforces Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) 1
171 Activities Categories SPOJ 1
172 Help the soldier Categories SPOJ 1
173 Given Length and Sum of Digits... Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
174 Alphacode Categories SPOJ 1
175 Fence Categories Codeforces Codeforces Round #211 (Div. 2) 1
176 Membership Management Categories Live Archive 2010 Asia - Tokyo 1
177 Stacking Boxes Categories UVA 1
178 Twin Primes Categories UVA 1
179 Is Bigger Smarter? Categories UVA 1
180 Tiling a Grid With Dominoes Categories SPOJ 1
181 Homer Simpson Categories UVA 1
182 Aliens at the train Categories SPOJ 1
183 Dividing coins Categories UVA 1
184 The 3n + 1 problem Categories UVA 1
185 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
186 Forming Quiz Teams Categories UVA 1
187 Prime Digital Roots Categories Live Archive 2001 South Pacific 1
188 History Grading Categories UVA 1
189 Triangular N-Queens Problem Categories Live Archive 2006 North America - Greater NY 2
190 1807 Categories SPOJ 2
191 Cards Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 2
192 Musketeers Categories SPOJ 2
193 Bit Mask Categories UVA 2
194 Always on the run Categories UVA 2
195 Counting K-Rectangle Categories SPOJ 2
196 JEDNAKOST Categories SPOJ 2
197 Slurpys Categories UVA 2
198 Three-coloring of binary trees Categories SPOJ 2
199 String Computer Categories UVA 2
200 Sequence Categories Live Archive 2014 Asia - Kuala Lumpur 2
201 Walking on the Safe Side Categories UVA 2
202 Boxes Categories UVA 2
203 Tourist Categories SPOJ 2
204 Game Show Math Categories UVA 2
205 Point Connection Game in a Circle Categories SPOJ 2
206 Chest of Drawers Categories UVA 2
207 Interesting number Categories SPOJ 2
208 Jugs Categories UVA 2
209 Mosaic Categories Live Archive 2009 North America - Southeast USA 2
210 Beautiful People Categories SGU 2
211 String Distance and Transform Process Categories UVA 2
212 ACM (ACronymMaker) Categories SPOJ 2
213 Threeprime Numbers Categories Timus 2
214 Nested Dolls Categories SPOJ 2
215 Chopsticks Categories UVA 2
216 Simple Minded Hashing Categories UVA 2
217 Up Subsequence Categories SPOJ 2
218 Restoring Password Categories Codeforces Codeforces Beta Round #76 (Div. 2 Only) 2
219 Bar Codes Categories UVA 2
220 Alternative Thinking Categories Codeforces Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) 2
221 Reposts Categories Codeforces VK Cup 2015 - Qualification Round 1 2
222 Menu Categories SPOJ 2
223 Counting The Way of Bracket Replacement Categories SPOJ 2
224 Flight Planner Categories UVA 2
225 Black-White Grid Categories Live Archive 2006 Asia - Hanoi 2
226 Maximum sum on a torus Categories UVA 2
227 KTV Categories UVA 2
228 Longest Match Categories UVA 2
229 Cow Frisbee Team Categories TJU 2
230 Soldier and Number Game Categories Codeforces Codeforces Round #304 (Div. 2) 2
231 Chop Ahoy! Revisited! Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 2
232 Deliver pizza Categories SPOJ 2
233 Little Elephant and Painting Categories CodeChef 2
234 Bing it Categories Live Archive 2009 Asia - Harbin 2
235 Sum of Different Primes Categories UVA 2
236 Divisible Group Sums Categories UVA 2
237 Password Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 2
238 Timofey and a tree Categories Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 2
239 Fibo Categories A2 Online Judge 2
240 Card Sorting Categories SPOJ 2
241 Another Box Problem Categories SPOJ 2
242 Anniversary Party Categories Timus 2
243 Queue Categories UVA 2
244 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
245 String to Palindrome Categories UVA 2
246 Square Categories UVA 2
247 Tower of Cubes Categories UVA 2
248 Inna and Choose Options Categories Codeforces Codeforces Round #234 (Div. 2) 2
249 Hard problem Categories Codeforces Codeforces Round #367 (Div. 2) 2
250 Journey Categories Codeforces Codeforces Round #428 (Div. 2) 2
251 The Marriage Interview :-) Categories UVA 2
252 Making Change Categories UVA 2
253 Plug-in Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 2
254 Chain Reaction Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 2
255 NERED Categories SPOJ 2
256 Photo to Remember Categories Codeforces VK Cup 2015 - Qualification Round 1 2
257 Making A Budget Categories SPOJ 2
258 BATMAN1 Categories SPOJ 2
259 Decoding Morse Sequences Categories SPOJ 2
260 Mr. Kitayuta's Colorful Graph Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
261 Color the Fence Categories Codeforces Codeforces Round #202 (Div. 2) 2
262 Wooden Sticks Categories SPOJ 2
263 Trouble of 13-Dots Categories UVA 2
264 Count Paths Categories A2 Online Judge 2
265 Another Longest Increasing Subsequence Problem Categories SPOJ 2
266 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 2
267 The Courier Categories SPOJ 2
268 Erdos Numbers Categories Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 2
269 Street Categories SPOJ 2
270 Weights and Measures Categories UVA 2
271 Tennis Championship Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 2
272 Rain Categories SPOJ 2
273 Temptation Island Categories SPOJ 2
274 Particular Palindromes Categories SPOJ 2
275 Bicolored Horses Categories Timus 2
276 Balancing the Stone Categories SPOJ 2
277 String Partition Categories UVA 2
278 Land Acquisition Categories SPOJ 2
279 Game of Credit Cards Categories Codeforces Codeforces Round #401 (Div. 2) 2
280 Polo the Penguin and Matrix Categories Codeforces Codeforces Round #177 (Div. 2) 2
281 Catch Fish Categories SPOJ 2
282 Mr. Kitayuta's Gift Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
283 Space Elevator Categories PKU 2
284 Caesar's Legions Categories Codeforces Codeforces Beta Round #89 (Div. 2) 2
285 Shopping Categories Live Archive 2014 Asia - Tokyo 2
286 Yoda Goes Palindromic ! Categories SPOJ 2
287 Maximum Sub-sequence Product Categories UVA 2
288 Sorting is not easy Categories SPOJ 2
289 Dab of Backpack Categories SPOJ 2
290 Esferas Categories SPOJ 2
291 Optimal Binary Search Tree Categories UVA 2
292 Drop the Triples Categories Live Archive 2007 Latin America - South America 2
293 String Shuffle Categories SPOJ 2
294 Pebble Solitaire Categories UVA 2
295 Travelling Salesman Categories UVA 2
296 Motoboy Categories URI 2
297 DZY Loves Sequences Categories Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 2
298 Diving for Gold Categories UVA 2
299 Functions again Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 2
300 I-Keyboard Categories SPOJ 2
301 Railway Tickets Categories Timus 2
302 Leaves Categories SPOJ 2
303 Partition Categories SPOJ 2
304 Distinct Subsequences Categories UVA 2
305 Handball Categories UVA 2
306 Tight Words Categories UVA 2
307 Make Palindrome Categories UVA 2
308 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
309 Geometric Progression Categories Codeforces Codeforces Round #Pi (Div. 2) 2
310 Destruction Cannon Categories URI 2
311 Fibonacci System Categories Live Archive 2008 Europe - Northeastern 2
312 Kyoya and Colored Balls Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 2
313 False Mirrors Categories Timus 2
314 Feline Olympics - Mouseball Categories SPOJ 2
315 New Year and Domino Categories Codeforces Good Bye 2015 2
316 Vasya and String Categories Codeforces Codeforces Round #354 (Div. 2) 2
317 Concert Tour Categories Live Archive 2014 Asia - Bangkok 2
318 Nudnik Photographer Categories Timus 2
319 Counting binary strings Categories SPOJ 2
320 Con-Junctions Categories SPOJ 2
321 Marks Distribution Categories UVA 2
322 Game of Sum Categories UVA 2
323 Problem 3 Categories SPOJ 2
324 Segments Categories Timus 2
325 Painting the balls Categories SGU 2
326 Covered Path Categories Codeforces Codeforces Round #298 (Div. 2) 2
327 BATMAN3 Categories SPOJ 2
328 Dice Categories SPOJ 2
329 Brackets Sequence Categories Timus 2
330 Again Palindrome Categories UVA 2
331 Pay the Price Categories UVA 2
332 Murcia's Skyline Categories UVA 2
333 Dancing Cows Categories SPOJ 2
334 Mobile Service Categories SPOJ 2
335 Approximating a Constant Range Categories Codeforces Codeforces Round #333 (Div. 2) 2
336 Another Tree Problem Categories SPOJ 2
337 Ministry Categories Timus 2
338 BATMAN2 Categories SPOJ 2
339 String problem Categories SPOJ 2
340 Tiling Categories UVA 2
341 Pebbles Categories Live Archive 2007 North America - Pacific Northwest & North America - Southern California 2
342 Scheduling Lectures Categories UVA 3
343 Bear and Prime Numbers Categories Codeforces Codeforces Round #226 (Div. 2) 3
344 Journey Categories Codeforces Codeforces Round #374 (Div. 2) 3
345 Bribe the Prisoners Categories SPOJ 3
346 Beautiful Numbers Categories UVA 3
347 Shopping Trip Categories UVA 3
348 The Matrix Game Categories CodeChef 3
349 Ilya and Escalator Categories Codeforces Codeforces Round #293 (Div. 2) 3
350 Greedy Hydra Categories SPOJ 3
351 Gentlemen Categories Timus 3
352 Greenhouse Effect Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 3
353 Pride Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 3
354 Xenia and Weights Categories Codeforces Codeforces Round #197 (Div. 2) 3
355 Intervals of Monotonicity Categories Timus 3
356 Term Strategy Categories UVA 3
357 Modulo Sum Categories Codeforces Codeforces Round #319 (Div. 2) 3
358 Art Union Categories Codeforces Codeforces Round #241 (Div. 2) 3
359 Alyona and Spreadsheet Categories Codeforces Codeforces Round #401 (Div. 2) 3
360 Partition the sequence Categories SPOJ 3
361 Slikar Categories SPOJ 3
362 Antimatter Ray Clearcutting Categories UVA 3
363 Distance in Tree Categories Codeforces VK Cup 2012 Round 1 3
364 The Debut Album Categories Timus 3
365 Lazy Math Instructor Categories Live Archive 2000 Asia - Tehran 3
366 Hopeless Coach Categories TJU 3
367 Even Palindrome Categories SPOJ 3
368 Candy (Again) Categories SPOJ 3
369 Omar Loves Candies Categories A2 Online Judge 3
370 Orchard Trees Categories UVA 3
371 Car with powers Categories SPOJ 3
372 Free Candies Categories UVA 3
373 Determine it Categories UVA 3
374 Minus Operation Categories SPOJ 3
375 Arthur and Table Categories Codeforces Codeforces Round #311 (Div. 2) 3
376 How Many O's? Categories UVA 3
377 The least round way Categories Codeforces Codeforces Beta Round #2 3
378 Polygon Categories SPOJ 3
379 Writing Code Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 3
380 IOI07 Miners Categories SPOJ 3
381 Working out Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 3
382 Recycling Bottles Categories Codeforces Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) 3
383 Bubble Sort Graph Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 3
384 Booking System Categories Codeforces Codeforces Round #241 (Div. 2) 3
385 Vanya and Scales Categories Codeforces Codeforces Round #308 (Div. 2) 3
386 Cards, bags and coins Categories CodeChef 3
387 AGTC Categories UVA 3
388 End up with More Teams Categories UVA 3
389 The Secret of an Aerolite Categories SPOJ 3
390 Budget Travel Categories UVA 3
391 Fetching Cooking Tools Categories CodeChef 3
392 Little Elephant and Interval Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 3
393 Bear and Compressing Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
394 String reduction Categories SPOJ 3
395 Bear and Blocks Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
396 Ladder Categories Codeforces Codeforces Round #171 (Div. 2) 3
397 Long Path Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
398 Sense of Beauty Categories Timus 3
399 Tour Categories UVA 3
400 Mahmoud and a Message Categories Codeforces Codeforces Round #396 (Div. 2) 3
401 Hierarchy Categories Timus 3
402 COUNT PAREN Categories SPOJ 3
403 RGBStreet Categories TopCoder SRM 325 - Div2 medium] (10005) 3
404 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 3
405 Mysterious Present Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 3
406 Mnemonics and Palindromes Categories Timus 3
407 Longtail Hedgehog Categories Codeforces Codeforces Round #338 (Div. 2) 3
408 Common Subsequences Categories SPOJ 3
409 Zeta-Nim Game Categories CodeChef 3
410 Hippity Hopscotch Categories UVA 3
411 Greg and Graph Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
412 Arpa's weak amphitheater and Mehrdad's valuable Hoses Categories Codeforces Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) 3
413 Fewest Flops Categories UVA 3
414 Simple Strings Categories Codeforces Educational Codeforces Round 12 3
415 Robbers' watch Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 3
416 Many polygons Categories SPOJ 3
417 A and B and Interesting Substrings Categories Codeforces Codeforces Round #294 (Div. 2) 3
418 Triangles Categories Live Archive 2014 South Pacific 3
419 Physics Practical Categories Codeforces Codeforces Round #154 (Div. 2) 3
420 BadNeighbors Categories TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
421 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
422 Zuma Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 3
423 Help Bob Categories SPOJ 3
424 Permutation Categories Codeforces Codeforces Round #209 (Div. 2) 3
425 Walking Around Wisely Categories UVA 3
426 Alyona and the Tree Categories Codeforces Codeforces Round #358 (Div. 2) 3
427 Fast Food Categories UVA 3
428 Sum of Digits Categories Timus 3
429 Probablistic OR Categories SPOJ 3
430 I-Keyboard Categories Live Archive 2000 Europe - Central 3
431 Best Coalitions Categories UVA 3
432 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 3
433 Maximum Triangle Area Categories SPOJ 3
434 Building Bridges(HARD) Categories SPOJ 3
435 Barcode Categories Codeforces Codeforces Round #139 (Div. 2) 3
436 Little Elephant and Movies Categories CodeChef 3
437 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
438 Raucous Rockers Categories UVA 3
439 Petya and Java Categories Codeforces Codeforces Beta Round #61 (Div. 2) 3
440 Hackers' Crackdown Categories UVA 3
441 Most Servings Meal Categories SPOJ 3
442 Kefa and Dishes Categories Codeforces Codeforces Round #321 (Div. 2) 3
443 Ada and Game Categories SPOJ 3
444 Crime Wave - The Sequel Categories UVA 3
445 An impassioned circulation of affection Categories Codeforces Codeforces Round #418 (Div. 2) 3
446 Re-Arrange II Categories SPOJ 3
447 Pleasing Chief Categories CodeChef 3
448 Little Red Riding Hood Categories UVA 3
449 Dynamic LCA Categories SPOJ 3
450 Coloring Trees Categories Codeforces Codeforces Round #369 (Div. 2) 3
451 Hard Process Categories Codeforces Educational Codeforces Round 11 3
452 Palindromic Subsequence Categories UVA 3
453 Mike and gcd problem Categories Codeforces Codeforces Round #410 (Div. 2) 3
454 New Skateboard Categories Codeforces Educational Codeforces Round 8 3
455 Sagheer, the Hausmeister Categories Codeforces Codeforces Round #417 (Div. 2) 3
456 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 3
457 Mike and Feet Categories Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 3
458 Sereja and Game Categories CodeChef 3
459 Many Paths, One Destination Categories UVA 3
460 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 3
461 Traveling by Stagecoach Categories SPOJ 3
462 Painting Fence Categories Codeforces Codeforces Round #256 (Div. 2) 3
463 Internet Address Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 3
464 Paid Roads Categories SPOJ 3
465 Little Girl and Maximum XOR Categories Codeforces Codeforces Round #169 (Div. 2) 3
466 Make Psycho Categories SPOJ 3
467 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
468 Minimal Coverage Categories Timus 3
469 Good Sequences Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 3
470 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
471 Matchsticks Categories TJU 4
472 Crack Categories Timus 4
473 The Bridges of Kolsberg Categories UVA 4
474 Riding in a Lift Categories Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 4
475 Trees Again Categories SPOJ 4
476 Choosing Capital for Treeland Categories Codeforces Codeforces Round #135 (Div. 2) 4
477 Appleman and Tree Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 4
478 Shaass and Bookshelf Categories Codeforces Codeforces Round #178 (Div. 2) 4
479 Zeros and Ones Categories UVA 4
480 Chocolate Categories SPOJ 4
481 Red-Green Towers Categories Codeforces Codeforces Round #273 (Div. 2) 4
482 Going Postal Categories Live Archive 2014 South Pacific 4
483 Minion Circle Categories CodeChef 4
484 The Values You Can Make Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 4
485 Matches Categories UVA 4
486 Reberland Linguistics Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 4
487 Mr. Kitayuta, the Treasure Hunter Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 4
488 BATMAN4 Categories SPOJ 4
489 Jeff and Rounding Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 4
490 Mars Canals Categories Timus 4
491 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
492 Avoiding Jungle in the Dark Categories UVA 4
493 Lemon Tale Categories Timus 4
494 Chloe and pleasant prizes Categories Codeforces Codeforces Round #384 (Div. 2) 4
495 Letter Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 4
496 Expect the Expected Categories UVA 4
497 Boy Scouts Categories SPOJ 4
498 FOODIE Categories SPOJ 4
499 Dominoes Categories SPOJ 4
500 Clique Problem Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 4
501 Who is The Boss Categories SPOJ 4
502 Lov-e Pap Pap-e Polti Categories SPOJ 4
503 Maximum Submatrix 2 Categories Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 4
504 Fire Categories Codeforces Codeforces Round #436 (Div. 2) 4
505 Folding Categories Timus 4
506 Cow Program Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
507 Fatawy Categories SPOJ 4
508 Divide and conquer Categories CodeChef 4
509 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 4
510 Let go to the movies Categories SPOJ 4
511 Balanced Numbers Categories SPOJ 4
512 Communication Fiend Categories Timus 4
513 Digit Sum Categories UVA 4
514 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
515 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 4
516 Can U Win? Categories UVA 4
517 Once Again... Categories Codeforces Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) 4
518 Alyona and Strings Categories Codeforces Codeforces Round #358 (Div. 2) 4
519 XOR Equation Categories Codeforces 8VC Venture Cup 2016 - Final Round 4
520 Bit by Bit Categories SPOJ 4
521 Convex Polygons Categories SPOJ 4
522 One-two, One-two 2 Categories Timus 4
523 Malevich Strikes Back! Categories Timus 4
524 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 4
525 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
526 Fools and Roads Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
527 Bottle Taps Categories Timus 4
528 Image Preview Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 4
529 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
530 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 4
531 Babaei and Birthday Cake Categories Codeforces Codeforces Round #343 (Div. 2) 4
532 Account Book Categories UVA 4
533 Gasoline Station Categories Timus 4
534 Drop the Triples Categories SPOJ 4
535 Dima and Salad Categories Codeforces Codeforces Round #214 (Div. 2) 4
536 Fox And Jumping Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
537 Chocolate Box Categories UVA 4
538 Bad Luck Island Categories Codeforces Codeforces Round #301 (Div. 2) 4
539 Forming Teams Categories Codeforces Codeforces Round #133 (Div. 2) 4
540 Cái túi ( Hard version ) Categories SPOJ Vietnam 4
541 Office Keys Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 4
542 The Intriguing Obsession Categories Codeforces Codeforces Round #439 (Div. 2) 4
543 Classmates 2 Categories Timus 4
544 Gerald and Giant Chess Categories Codeforces Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) 4
545 Ingredients Categories SPOJ 4
546 Pie Rules Categories Codeforces MemSQL Start[c]UP 3.0 - Round 1 4
547 Civilization Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
548 String Popping Categories UVA 4
549 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 4
550 Tiling Dominoes Categories UVA 4
551 Zero Tree Categories Codeforces Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) 4
552 Bright Bracelet Categories Live Archive 2003 North America - Mid-Central USA 4
553 Drazil and Tiles Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
554 Dumb Bones Categories UVA 4
555 Number of Paths in the Empire Categories SGU 4
556 SMS Categories Timus 4
557 Rent your airplane and make money Categories Live Archive 2003 Europe - Southwestern 4
558 Busy Programmer Categories UVA 4
559 Najkraci Categories SPOJ 4
560 Little Elephant and Blocks Categories CodeChef 4
561 Generate a String Categories Codeforces Educational Codeforces Round 16 4
562 DIVSEQ Categories SPOJ 4
563 Batman Categories UVA 4
564 Another Assignment Problem Categories SPOJ 4
565 Buns Categories Codeforces Codeforces Beta Round #82 (Div. 2) 4
566 Antimonotonicity Categories UVA 4
567 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
568 Namit In Trouble Categories SPOJ 4
569 Book of Evil Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 4
570 Round Table Knights Categories Codeforces Codeforces Beta Round #65 (Div. 2) 4
571 Bag of mice Categories Codeforces Codeforces Round #105 (Div. 2) 4
572 New Year and Fireworks Categories Codeforces Good Bye 2016 4
573 The Child and Zoo Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 4
574 Promotion Categories URI 4
575 Vladik and Memorable Trip Categories Codeforces Codeforces Round #416 (Div. 2) 4
576 A Lot of Games Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
577 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 4
578 Prefixes and Suffixes Categories Codeforces Codeforces Round #246 (Div. 2) 4
579 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 4
580 Queries for Number of Palindromes Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 5
581 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
582 Patches Categories URI 5
583 Basketball Team Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
584 Coin Changing Again Categories UVA 5
585 Sums of Digits Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 5
586 Bear and Tower of Cubes Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 5
587 Covering Sets Categories CodeChef 5
588 IPL - CRICKET TOURNAMENT Categories SPOJ 5
589 Robot Rapping Results Report Categories Codeforces CROC 2016 - Elimination Round 5
590 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
591 JUMPING DORA Categories SPOJ 5
592 Huffman´s Greed Categories SPOJ 5
593 Ship Routes Categories Timus 5
594 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
595 Happiness to People! Categories Timus 5
596 Bridge Building Categories UVA 5
597 Minimization Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 5
598 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 5
599 Paint the Tree Categories CodeChef 5
600 Choosing Balls Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 5
601 Summing Slopes Categories CodeChef 5
602 Roadworks Categories Timus 5
603 Spy Syndrome 2 Categories Codeforces Manthan, Codefest 16 5
604 Chocolate Bar Categories Codeforces Educational Codeforces Round 1 5
605 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 5
606 Two Paths Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
607 Vasya and Beautiful Arrays Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 5
608 Sum Categories Codeforces Codeforces Beta Round #46 (Div. 2) 5
609 Allergy Test Categories UVA 5
610 ICPC Team Strategy Categories UVA 5
611 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 5
612 Famil Door and Brackets Categories Codeforces Codeforces Round #343 (Div. 2) 5
613 Enterprise Categories Timus 5
614 INVITATION FOR TECHOFES Categories SPOJ 5
615 Mario Kart Categories A2 Online Judge 5
616 Pillars Categories Codeforces Codeforces Round #271 (Div. 2) 5
617 Strip Categories Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 5
618 E-mail Categories Timus 5
619 Wet Shark and Blocks Categories Codeforces Codeforces Round #341 (Div. 2) 5
620 Lucky Tree Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 5
621 Counting Rectangles is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 5
622 DNA Laboratory Categories SPOJ 5
623 The Unreal Tournament Categories UVA 5
624 Lucky Common Subsequence Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
625 Dima and Hares Categories Codeforces Codeforces Round #208 (Div. 2) 5
626 Count Digits Categories CodeChef 5
627 Jeff and Furik Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 5
628 Train Categories Timus 5
629 Berzerk Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 5
630 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 5
631 Cargo Agency Categories Timus 5
632 Obsessive String Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 5
633 Iahub and Permutations Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 5
634 Winter is here Categories Codeforces Codeforces Round #428 (Div. 2) 5
635 Candy Categories UVA 5
636 CreatureTraining Categories TopCoder TCO08 Round 2 - Div1 medium] (12012) 5
637 Atomic Car Race Categories UVA 5
638 Symmetric and Transitive Categories Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 5
639 Subsequence Problem Categories SPOJ 5
640 Independent Attacking Zones Categories UVA 5
641 Longest Increasing Sequence Categories UVA 5
642 Substring and Subsequence Categories Codeforces VK Cup 2012 Round 2 5
643 Roman and Numbers Categories Codeforces Codeforces Round #235 (Div. 2) 5
644 Hanoi Factory Categories Codeforces Codeforces Round #401 (Div. 2) 5
645 ???? ?? ?????? - 2 (round version) Categories Codeforces VK Cup 2015 - Round 1 5
646 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
647 Sereja and Bubble Sort Categories CodeChef 5
648 K-based Numbers. Version 3 Categories Timus 5
649 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 5
650 Running with Obstacles Categories Codeforces VK Cup 2016 - Qualification Round 1 5
651 Running Track Categories Codeforces Codeforces Round #338 (Div. 2) 5
652 Correcting Mistakes Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
653 EKG Categories Codeforces ABBYY Cup 3.0 5
654 A and B and Lecture Rooms Categories Codeforces Codeforces Round #294 (Div. 2) 5
655 Dynasty Puzzles Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
656 WordMath Categories TopCoder Unknown () 5
657 Elimination Categories Codeforces RCC 2014 Warmup (Div. 2) 5
658 Upgrading Array Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 5
659 Ciel and Duel Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 5
660 An overnight dance in discotheque Categories Codeforces Codeforces Round #418 (Div. 2) 5
661 The Islands Categories UVA 5
662 Connected Components Categories Codeforces Croc Champ 2013 - Round 1 5
663 Restaurant Categories Codeforces Testing Round #12 5
664 Levko and Array Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 5
665 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
666 Weak Links Categories UVA 5
667 Spiders Categories Codeforces School Regional Team Contest, Saratov, 2011 5
668 Optimal Cut Categories UVA 5
669 Phone Talks Categories Codeforces VK Cup 2012 Qualification Round 1 5
670 GO FOR DIAMONDS Categories SPOJ 5
671 Hotel Categories Live Archive 2005 Asia - Tehran 5
672 Valid Sets Categories Codeforces Codeforces Round #277 (Div. 2) 5
673 Antimatter Categories Codeforces Codeforces Round #225 (Div. 1) 5
674 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
675 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
676 Super M Categories Codeforces Codeforces Round #328 (Div. 2) 5
677 Anniversary Firework Categories Timus 5
678 Fibonacci Words Categories UVA 5
679 Connect Line Segments Categories SPOJ 5
680 Inversions problem Categories Codeforces Rockethon 2015 5
681 Special Matrices Categories Codeforces Codeforces Round #277.5 (Div. 2) 6
682 Checkout Assistant Categories Codeforces Codeforces Beta Round #19 6
683 Table Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
684 Playing War Categories UVA 6
685 Subsequences Categories Codeforces Testing Round #12 6
686 Ilya and Roads Categories Codeforces Codeforces Round #186 (Div. 2) 6
687 Salary for Robots Categories Timus 6
688 Mahmoud and a xor trip Categories Codeforces Codeforces Round #396 (Div. 2) 6
689 LCIS Categories Codeforces Codeforces Beta Round #10 6
690 Match & Catch Categories Codeforces Codeforces Round #244 (Div. 2) 6
691 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 6
692 Yet Another Number Game Categories Codeforces Codeforces Round #173 (Div. 2) 6
693 Magic Numbers Categories Codeforces Educational Codeforces Round 8 6
694 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 6
695 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 6
696 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
697 LIS of Sequence Categories Codeforces Codeforces Round #277 (Div. 2) 6
698 New Year Letter Categories Codeforces Good Bye 2013 6
699 Train Categories Codeforces Codeforces Beta Round #68 6
700 Component Testing Categories Live Archive 2012 North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA 6
701 Unusual Sequences Categories Codeforces Codeforces Round #450 (Div. 2) 6
702 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
703 Partial Teacher Categories Codeforces Manthan 2011 6
704 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
705 Jzzhu and Numbers Categories Codeforces Codeforces Round #257 (Div. 1) 6
706 Trains and Statistic Categories Codeforces Codeforces Round #353 (Div. 2) 6
707 Sort that Queue Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 6
708 Buses Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
709 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 6
710 Minesweeper 1D Categories Codeforces Codeforces Round #237 (Div. 2) 6
711 Stripe 2 Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
712 Sereja and Subsequences Categories Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 6
713 Memory and Scores Categories Codeforces Codeforces Round #370 (Div. 2) 6
714 A Simple Task Categories Codeforces Codeforces Beta Round #11 6
715 Substitutes in Number Categories Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 6
716 Insertion Sort Categories Codeforces Codeforces Round #212 (Div. 2) 6
717 AlgoRace Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
718 Snakes Categories A2 Online Judge 6
719 The Top-Code Categories SPOJ 6
720 Duff in Beach Categories Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 6
721 Brainwashing Device Categories Timus 6
722 Least Common Multiple Categories Live Archive 2014 South Pacific 6
723 Game --- Mouse and Cheese Categories UVA 6
724 Incrementing The Integer Categories SPOJ 6
725 Coloring Brackets Categories Codeforces Codeforces Round #106 (Div. 2) 6
726 Looking for Order Categories Codeforces Codeforces Beta Round #8 6
727 Square Subsets Categories Codeforces Codeforces Round #448 (Div. 2) 6
728 Palindromes Categories Codeforces Codeforces Beta Round #98 (Div. 2) 6
729 Beautiful numbers Categories Codeforces Codeforces Beta Round #51 6
730 The Maths Lecture Categories Codeforces Codeforces Round #287 (Div. 2) 6
731 MagicNaming Categories TopCoder SRM 526.5 - Div2 hard] (14762) 6
732 Animals Categories Codeforces Codeforces Beta Round #35 (Div. 2) 6
733 Summing Slopes Categories SPOJ 6
734 Two Strings Categories Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 6
735 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
736 Longest Run on a Snowboard Categories Live Archive 2006 Asia - Coimbatore 6
737 Sequence Categories Codeforces Codeforces Beta Round #13 6
738 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
739 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 6
740 Common Palindrome Categories UVA 6
741 Coin Troubles Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 6
742 Two out of Three Categories Codeforces Yandex.Algorithm 2011 Qualification 2 6
743 Dreamoon and Strings Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 6
744 Eating High Categories Timus 6
745 Array GCD Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 6
746 Demiurges Play Again Categories Codeforces Codeforces Round #300 6
747 Vanya and Brackets Categories Codeforces Codeforces Round #308 (Div. 2) 6
748 Watching Fireworks is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
749 How many trees? Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 6
750 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
751 Wizards and Huge Prize Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 6
752 Beaver Game Categories Codeforces Codeforces Beta Round #70 (Div. 2) 6
753 Little Elephant and LCM Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
754 Road Improvement Categories Codeforces Codeforces Round #302 (Div. 1) 6
755 Fedor and Essay Categories Codeforces Codeforces Round #267 (Div. 2) 6
756 Fence Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
757 Kindergarten Categories Codeforces Codeforces Round #276 (Div. 1) 6
758 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
759 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
760 Karen and Supermarket Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
761 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 6
762 Mystic Craft Categories SPOJ 6
763 Random Task Categories Codeforces Codeforces Round #247 (Div. 2) 6
764 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
765 Palindrome Categories Codeforces MemSQL start[c]up Round 2 - online version 6
766 Shooting Gallery Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 6
767 ACM Diagnostics Categories Timus 6
768 Segment Tree Categories SPOJ 6
769 Alternative Solution Categories Timus 6
770 Vladik and cards Categories Codeforces Codeforces Round #384 (Div. 2) 6
771 Eleven Categories UVA 6
772 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 6
773 Anya and Cubes Categories Codeforces Codeforces Round #297 (Div. 2) 6
774 Arthur and Brackets Categories Codeforces Codeforces Round #288 (Div. 2) 6
775 Plants vs. Zombies HD SP Categories UVA 6
776 Dynamic Problem Scoring Categories Codeforces VK Cup 2017 - Round 3 6
777 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 6
778 Solitaire Categories Codeforces Codeforces Round #130 (Div. 2) 6
779 Beaver Categories Codeforces Codeforces Beta Round #71 6
780 Maxim and Restaurant Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 6
781 Bracket Sequence Categories SPOJ 6
782 Martian Army Categories Timus 6
783 Let's Play Osu! Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 6
784 LionAge II Categories Codeforces Codeforces Beta Round #66 6
785 Decimation Categories Timus 6
786 Okabe and El Psy Kongroo Categories Codeforces Codeforces Round #420 (Div. 2) 6
787 Hamiltonian Spanning Tree Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 6
788 Sonya and Problem Wihtout a Legend Categories Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 6
789 Permutation Sum Categories Codeforces Codeforces Round #175 (Div. 2) 6
790 Paint templates Categories SPOJ 6
791 Pluses everywhere Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
792 Numbers Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
793 Anfisa the Monkey Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 6
794 Pig and Palindromes Categories Codeforces Codeforces Round #316 (Div. 2) 6
795 The Bakery Categories Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 6
796 New Year Domino Categories Codeforces Good Bye 2014 6
797 Cunning Gena Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 6
798 Increase Sequence Categories Codeforces Codeforces Round #266 (Div. 2) 6
799 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 6
800 Beautiful Pairs of Numbers Categories Codeforces Codeforces Round #236 (Div. 1) 7
801 Martian Plates Categories Timus 7
802 Thief in a Shop Categories Codeforces Educational Codeforces Round 9 7
803 Transmitting Levels Categories Codeforces ZeptoLab Code Rush 2015 7
804 Merry-go-round Categories Timus 7
805 Quest Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
806 Inna and Sequence Categories Codeforces Codeforces Round #220 (Div. 2) 7
807 Cats Transport Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
808 Devu and Birthday Celebration Categories Codeforces Codeforces Round #251 (Div. 2) 7
809 Colored Tiles Categories UVA 7
810 Maxim and Matrix Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 7
811 Table Tennis Categories UVA 7
812 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 7
813 Yaroslav and Two Strings Categories Codeforces Codeforces Round #179 (Div. 2) 7
814 Plus and xor Categories Codeforces All-Ukrainian School Olympiad in Informatics 7
815 Yet Another Answer Categories Timus 7
816 Catch Sheep Categories SPOJ 7
817 FibonacciKnapsack Categories TopCoder SRM 352 - Div1 medium] (10709) 7
818 Phone Number Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
819 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
820 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 7
821 Group Projects Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 7
822 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 7
823 Treeland Tour Categories Codeforces Codeforces Round #279 (Div. 2) 7
824 Divisor Tree Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 7
825 Free Market Categories Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 7
826 Lucky Numbers Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
827 Intellectual Inquiry Categories Codeforces CROC 2016 - Elimination Round 7
828 TheProgrammingContestDivOne Categories TopCoder SRM 502 - Div1 medium] (14431) 7
829 Name That Tune Categories Codeforces Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) 7
830 Painting The Wall Categories Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 7
831 Lost in Space Categories Timus 7
832 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
833 Archer's Travel Categories Timus 7
834 Duckindromes Categories UVA 7
835 Wilbur and Trees Categories Codeforces Codeforces Round #331 (Div. 2) 7
836 Ralph and Mushrooms Categories Codeforces Codeforces Round #447 (Div. 2) 7
837 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
838 Special Grid Categories Codeforces Codeforces Round #249 (Div. 2) 7
839 Ant Man Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
840 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
841 Axis Walking Categories Codeforces Codeforces Round #191 (Div. 2) 7
842 Ann and Half-Palindrome Categories Codeforces Codeforces Round #311 (Div. 2) 7
843 Remembering Strings Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 7
844 Guess the Tree Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 7
845 Hongcow Buys a Deck of Cards Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
846 Right Triangles Categories Codeforces Codeforces Testing Round #1 7
847 Two Longest Paths Categories UVA 7
848 Traffic Jams in the Land Categories Codeforces Codeforces Round #284 (Div. 1) 7
849 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
850 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
851 Game with Powers Categories Codeforces Codeforces Round #188 (Div. 1) 7
852 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
853 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
854 Changing a String Categories Codeforces Codeforces Beta Round #52 (Div. 2) 7
855 Rent your airplane and make money Categories UVA 7
856 Genetic Engineering Categories Codeforces Rockethon 2014 7
857 Optical Experiment Categories Codeforces Manthan 2011 7
858 Maximum Questions Categories Codeforces Codeforces Round #450 (Div. 2) 7
859 Yet Another Assignment Problem Categories SPOJ 7
860 Darth Vader and Tree Categories Codeforces Codeforces Round #291 (Div. 2) 7
861 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 7
862 Sereja and Two Sequences Categories Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 7
863 Fence Divercity Categories Codeforces Codeforces Round #346 (Div. 2) 7
864 Longest Common Subsequence Categories SPOJ 7
865 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 7
866 Bulbo Categories Codeforces Bubble Cup 8 - Finals [Online Mirror] 7
867 Vladik and chat Categories Codeforces Codeforces Round #390 (Div. 2) 7
868 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
869 Lunar Code Categories Timus 7
870 Game Categories Codeforces Codeforces Beta Round #46 (Div. 2) 7
871 Captains Mode Categories Codeforces Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) 7
872 Kleofáš and the n-thlon Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 7
873 Join Categories Timus 7
874 Nanami's Digital Board Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 7
875 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 7
876 Lucky Number Representation Categories Codeforces Codeforces Round #206 (Div. 1) 7
877 Top Secret Task Categories Codeforces Codeforces Round #327 (Div. 1) 7
878 Pawn Categories Codeforces Codeforces Beta Round #40 (Div. 2) 7
879 Word Cut Categories Codeforces Croc Champ 2012 - Round 2 7
880 Hiking Categories Codeforces Codeforces Round #277.5 (Div. 2) 7
881 Brainfuck Categories Timus 7
882 Product Sum Categories Codeforces Codeforces Round #344 (Div. 2) 7
883 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
884 Maximum Sub-sequence Product Categories Live Archive 1996 Europe - Southeastern 7
885 Education Reform Categories Codeforces Codeforces Beta Round #90 7
886 Little Artem and Random Variable Categories Codeforces VK Cup 2016 - Round 2 7
887 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 7
888 Identify the Number Categories A2 Online Judge 7
889 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 7
890 Valera and Fools Categories Codeforces Codeforces Round #216 (Div. 2) 7
891 First Digit Law Categories Codeforces Codeforces Beta Round #50 7
892 Zip-line Categories Codeforces Codeforces Round #345 (Div. 1) 7
893 Tourist Categories Codeforces All-Ukrainian School Olympiad in Informatics 8
894 Two Melodies Categories Codeforces Educational Codeforces Round 22 8
895 Genetic engineering Categories Codeforces Yandex.Algorithm 2011 Round 2 8
896 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
897 Dot Categories Codeforces Codeforces Beta Round #63 (Div. 2) 8
898 The Child and Polygon Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 8
899 Triangles Categories Codeforces Codeforces Beta Round #13 8
900 Levko and Strings Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 8
901 New Year Garland Categories Codeforces Codeforces Round #100 8
902 Oil Skimming Categories A2 Online Judge 8
903 Game with Strings Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 8
904 Ostap and Tree Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 8
905 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
906 Binary Table Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 8
907 Bombing Categories Codeforces Codeforces Beta Round #47 8
908 2048 Categories Codeforces Coder-Strike 2014 - Round 2 8
909 Tower of Hanoi Categories Codeforces Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) 8
910 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 8
911 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
912 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 8
913 Painting Square Categories Codeforces Codeforces Round #181 (Div. 2) 8
914 An unavoidable detour for home Categories Codeforces Codeforces Round #418 (Div. 2) 8
915 Zublicanes and Mumocrates Categories Codeforces Codeforces Round #322 (Div. 2) 8
916 Inversions problem Categories Codeforces Rockethon 2015 8
917 Name Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 8
918 Biathlon Track Categories Codeforces Codeforces Round #242 (Div. 2) 8
919 Bear and Floodlight Categories Codeforces Codeforces Round #226 (Div. 2) 8
920 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
921 Somali Pirates Categories Timus 8
922 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
923 Shaass the Great Categories Codeforces Codeforces Round #178 (Div. 2) 8
924 Multicolored Marbles Categories Codeforces VK Cup 2012 Finals, Practice Session 8
925 On the Bench Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 8
926 Progress Monitoring Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 8
927 Bath Queue Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
928 Maxim and Increasing Subsequence Categories Codeforces Codeforces Round #160 (Div. 1) 8
929 Mausoleum Categories Codeforces Codeforces Round #Pi (Div. 2) 8
930 One-Based Arithmetic Categories Codeforces Testing Round #10 8
931 LCS Again Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 8
932 Gifts Categories Codeforces Codeforces Round #142 (Div. 1) 8
933 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
934 Balance Categories Codeforces Codeforces Beta Round #17 8
935 Linear Kingdom Races Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
936 Lucky Arrays Categories Codeforces Codeforces Round #156 (Div. 1) 8
937 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
938 The Chocolate Spree Categories Codeforces Manthan, Codefest 16 8
939 Game with Strings Categories Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 8
940 Diverse Substrings Categories Codeforces Testing Round #9 8
941 World of Darkraft - 2 Categories Codeforces Codeforces Round #265 (Div. 1) 8
942 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 8
943 Fibonacci Sums Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 8
944 Sereja and Intervals Categories Codeforces Codeforces Round #215 (Div. 1) 8
945 Xenia and Dominoes Categories Codeforces Codeforces Round #199 (Div. 2) 8
946 What Has Dirichlet Got to Do with That? Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
947 Beads Categories Codeforces Codeforces Beta Round #8 8
948 Petya and Coloring Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) 8
949 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
950 Jeff and Brackets Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 8
951 Yekaterinburg Subway Categories Timus 8
952 Find a car Categories Codeforces Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) 8
953 The Minimum Number of Variables Categories Codeforces Codeforces Round #171 (Div. 2) 8
954 Largest Submatrix 3 Categories Codeforces Codeforces Round #239 (Div. 1) 8
955 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
956 Preorder Test Categories Codeforces 8VC Venture Cup 2016 - Final Round 8
957 Tree Categories Codeforces Codeforces Beta Round #23 8
958 Helping People Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 8
959 Fibonacci army Categories Codeforces Unknown Language Round #2 8
960 IT Restaurants Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 8
961 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
962 Cows and Cool Sequences Categories Codeforces Codeforces Round #174 (Div. 1) 8
963 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
964 Frequent Flyer Card Categories Timus 8
965 Mishka and Divisors Categories Codeforces Codeforces Round #365 (Div. 2) 8
966 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 8
967 Numbers Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 8
968 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 8
969 Famil Door and Roads Categories Codeforces Codeforces Round #343 (Div. 2) 8
970 Turtles Categories Codeforces Codeforces Round #202 (Div. 1) 8
971 Vowels Categories Codeforces Codeforces Round #225 (Div. 1) 8
972 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 8
973 e-Government Categories Codeforces VK Cup 2012 Round 2 8
974 Roads in Yusland Categories Codeforces Codeforces Round #352 (Div. 1) 8
975 Superhero's Job Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 8
976 Drazil and Morning Exercise Categories Codeforces Codeforces Round #292 (Div. 1) 8
977 Sereja and Sets Categories Codeforces Codeforces Round #243 (Div. 1) 8
978 Antichain Categories Codeforces Codeforces Round #205 (Div. 2) 8
979 Michael and Charging Stations Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 8
980 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
981 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
982 Broken robot Categories Codeforces Codeforces Beta Round #24 8
983 Gosha is hunting Categories Codeforces Codeforces Round #381 (Div. 1) 8
984 Flights for Regular Customers Categories Codeforces Codeforces Round #319 (Div. 1) 8
985 Birthday Categories Codeforces Codeforces Round #282 (Div. 1) 8
986 Fractal Detector Categories Codeforces Codeforces Round #141 (Div. 2) 8
987 Alex and Complicated Task Categories Codeforces Codeforces Round #267 (Div. 2) 8
988 Greg and Caves Categories Codeforces Codeforces Round #179 (Div. 1) 8
989 Bags and Coins Categories Codeforces Codeforces Round #207 (Div. 1) 8
990 Inventory Categories UVA 8
991 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 8
992 Vanya and Balloons Categories Codeforces Codeforces Round #355 (Div. 2) 8
993 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 8
994 Ciel and Flipboard Categories Codeforces Codeforces Round #190 (Div. 1) 9
995 Representative Sampling Categories Codeforces ABBYY Cup 2.0 - Hard 9
996 Lostborn Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
997 Maximum Waterfall Categories Codeforces Codeforces Round #165 (Div. 1) 9
998 Password Categories Codeforces Codeforces Beta Round #71 9
999 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1000 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1001 Simplified Nonogram Categories Codeforces Codeforces Round #298 (Div. 2) 9
1002 Writing a Song Categories Codeforces Codeforces Beta Round #50 9
1003 Positions in Permutations Categories Codeforces Codeforces Round #175 (Div. 2) 9
1004 Strange Calculation and Cats Categories Codeforces Codeforces Round #329 (Div. 2) 9
1005 Unambiguous Arithmetic Expression Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
1006 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
1007 New Year Shopping Categories Codeforces Good Bye 2014 9
1008 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 9
1009 Singer House Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 9
1010 Shoe Store Categories Codeforces Codeforces Round #113 (Div. 2) 9
1011 Maximum Longest Increasing Subsequence Categories CodeChef 9
1012 Information Reform Categories Codeforces Codeforces Beta Round #64 9
1013 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
1014 Quick Tortoise Categories Codeforces Codeforces Round #144 (Div. 1) 9
1015 Pasha and Pipe Categories Codeforces Codeforces Round #293 (Div. 2) 9
1016 StackingBoxes Categories TopCoder SRM 261 - Div1 hard] (7995) 9
1017 And Yet Another Bracket Sequence Categories Codeforces VK Cup 2015 - Round 1 9
1018 Berland Federalization Categories Codeforces Testing Round #10 9
1019 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
1020 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
1021 Moon Craters Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
1022 Dima and Figure Categories Codeforces Codeforces Round #167 (Div. 1) 9
1023 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
1024 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
1025 Hanger Categories Codeforces Codeforces Beta Round #68 9
1026 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1027 Tavas in Kansas Categories Codeforces Codeforces Round #299 (Div. 1) 9
1028 Polo the Penguin and Lucky Numbers Categories Codeforces Codeforces Round #177 (Div. 1) 9
1029 Candy Store Categories Live Archive 2012 North America - Southeast USA 9
1030 Sequence of Balls Categories Codeforces Manthan 2011 9
1031 Yaroslav and Arrangements Categories Codeforces Codeforces Round #182 (Div. 1) 9
1032 Tachibana Kanade's Tofu Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 9
1033 Castle Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
1034 Colorful Stones Categories Codeforces Codeforces Round #162 (Div. 1) 9
1035 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
1036 Random Function and Tree Categories Codeforces Codeforces Round #275 (Div. 1) 9
1037 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 9
1038 Sandy and Nuts Categories Codeforces Codeforces Round #332 (Div. 2) 9
1039 Sereja and Squares Categories Codeforces Codeforces Round #187 (Div. 1) 9
1040 Cowboys Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
1041 Valera and Number Categories Codeforces Codeforces Round #252 (Div. 2) 9
1042 Crime Management Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) 9
1043 Polycarp's Masterpiece Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 9
1044 Fox And Travelling Categories Codeforces Codeforces Round #290 (Div. 1) 9
1045 Steaks on Board Categories Timus 9
1046 Don't fear, DravDe is kind Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 9
1047 Maxim and Calculator Categories Codeforces Codeforces Round #160 (Div. 1) 9
1048 Dima and Game Categories Codeforces Codeforces Round #167 (Div. 1) 9
1049 Subarray Cuts Categories Codeforces Rockethon 2015 9
1050 Power Defence Categories Codeforces Codeforces Round #115 9
1051 Binary Key Categories Codeforces Codeforces Round #193 (Div. 2) 9
1052 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
1053 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 9
1054 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
1055 Ksenia and Combinatorics Categories Codeforces Codeforces Round #224 (Div. 2) 9
1056 Research Rover Categories Codeforces Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) 9
1057 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
1058 Faryuks Categories Timus 9
1059 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
1060 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 9
1061 Pudding Monsters Categories Codeforces Zepto Code Rush 2014 9
1062 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
1063 Lesson Timetable Categories Codeforces Codeforces Beta Round #37 9
1064 Roadside Trees Categories Codeforces Codeforces Round #162 (Div. 1) 9
1065 Ivan the Fool VS Gorynych the Dragon Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 9
1066 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 9
1067 Game with Points Categories Codeforces Testing Round #9 9
1068 Four Divisors Categories Codeforces Educational Codeforces Round 12 9
1069 A Museum Robbery Categories Codeforces Codeforces Round #333 (Div. 1) 9
1070 Rhombus Categories Codeforces Codeforces Round #161 (Div. 2) 9
1071 Black Widow Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 9
1072 Stairs and Lines Categories Codeforces Codeforces Round #284 (Div. 1) 9
1073 Subarray Cuts Categories Codeforces Rockethon 2015 9
1074 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
1075 Two Subsequences Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
1076 Maze Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
1077 Dreamoon and Binary Categories Codeforces Codeforces Round #272 (Div. 1) 9
1078 Half-decay tree Categories Codeforces Codeforces Beta Round #62 9
1079 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
1080 Journey Categories Codeforces Codeforces Beta Round #53 9
1081 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
1082 Wall Bars Categories Codeforces Codeforces Round #164 (Div. 2) 9
1083 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1084 Flags Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1085 Smart Boy Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 9
1086 Gerald and Path Categories Codeforces Codeforces Round #313 (Div. 1) 9
1087 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
1088 Triangles Categories Codeforces Codeforces Beta Round #15 9
1089 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1090 Road to Home Categories Codeforces Codeforces Round #374 (Div. 2) 9
1091 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
1092 Rectangles and Square Categories Codeforces MemSQL start[c]up Round 2 - online version 9
1093 Pilgrims Categories Codeforces Codeforces Round #202 (Div. 1) 9
1094 Hitchhiking in the Baltic States Categories Codeforces Codeforces Round #415 (Div. 1) 9
1095 Forward, march! Categories Codeforces Codeforces Beta Round #11 10
1096 Days of Floral Colours Categories Codeforces Codeforces Round #431 (Div. 1) 10
1097 Kyoya and Train Categories Codeforces Codeforces Round #309 (Div. 1) 10
1098 Simba on the Circle Categories Codeforces Educational Codeforces Round 4 10
1099 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
1100 #dynamic-programming&nbsp;(168)</span> Categories SPOJ 10
1101 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
1102 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
1103 Dynamic Programming Categories A2 Online Judge 10
1104 Digits of Number Pi Categories Codeforces Codeforces Round #325 (Div. 1) 10
1105 Sloth Categories Codeforces Codeforces Round #446 (Div. 1) 10
1106 The Great Marathon Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
1107 Subsequences Return Categories Codeforces Codeforces Round #283 (Div. 1) 10
1108 Permanent Categories Codeforces Codeforces Round #268 (Div. 1) 10
1109 Combining Slimes Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 10
1110 Xenia and String Problem Categories Codeforces Codeforces Round #207 (Div. 1) 10
1111 Summer Reading Categories Codeforces Codeforces Round #217 (Div. 2) 10
1112 Dynamic Assignment Problem Categories SPOJ 10
1113 Google Code Jam Categories Codeforces Codeforces Round #170 (Div. 1) 10
1114 Counting Skyscrapers Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1115 Buy One, Get One Free Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1116 Caramel Clouds Categories Codeforces Codeforces Round #426 (Div. 1) 10
1117 Puzzle Lover Categories Codeforces Codeforces Round #339 (Div. 1) 10
1118 School Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
1119 To Hack or not to Hack Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10
1120 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10
1121 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
1122 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1123 New Year Cactus Categories Codeforces Good Bye 2013 10
1124 Jzzhu and Squares Categories Codeforces Codeforces Round #257 (Div. 1) 10
1125 Inversions problem Categories Codeforces Rockethon 2015 10
1126 Colored Jenga Categories Codeforces Codeforces Round #242 (Div. 2) 10
1127 Vasily the Bear and Painting Square Categories Codeforces Codeforces Round #195 (Div. 2) 10
1128 Numbers on the blackboard Categories Codeforces Codeforces Round #443 (Div. 1) 10
1129 Galaxy Union Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 10
1130 Red and Black Tree Categories Codeforces Codeforces Round #221 (Div. 1) 10
1131 Transferring Pyramid Categories Codeforces Codeforces Round #206 (Div. 1) 10
1132 Selling Numbers Categories Codeforces Codeforces Round #402 (Div. 1) 10
1133 Random Ranking Categories Codeforces Codeforces Round #183 (Div. 1) 10
1134 Little Pony and Elements of Harmony Categories Codeforces Codeforces Round #259 (Div. 1) 10
1135 Number of Binominal Coefficients Categories Codeforces Codeforces Round #323 (Div. 1) 10
1136 Bear and Cavalry Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 10
1137 Mod Mod Mod Categories Codeforces Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3) 10
1138 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
1139 World Evil Categories Codeforces Codeforces Beta Round #58 10
1140 Longest Increasing Subsequence Categories Codeforces Codeforces Round #315 (Div. 1) 10
1141 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
1142 Mutation Categories Codeforces All-Ukrainian School Olympiad in Informatics 10
1143 Transforming Sequence Categories Codeforces AIM Tech Round (Div. 1) 10
1144 An easy problem about trees Categories Codeforces MemSQL Start[c]UP 2.0 - Round 2 10
1145 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
1146 Banners Categories Codeforces Zepto Code Rush 2014 10
1147 Sequence Transformation Categories Codeforces Codeforces Round #172 (Div. 1) 10
1148 Boolean Function Categories Codeforces Codeforces Round #323 (Div. 1) 10
1149 Stock Trading Categories Codeforces Rockethon 2014 10
1150 Cookie Clicker Categories Codeforces Codeforces Round #222 (Div. 1) 10
1151 Geometry Categories Live Archive 2005 Asia - Kolkata 10
1152 Kojiro and Furrari Categories Codeforces Codeforces Round #322 (Div. 2) 10
1153 Longest Subsequence Categories Live Archive 2004 Asia - Manila 10
1154 Help Shrek and Donkey Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10