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Dynamic Programming problems
Problem Name Online Judge Year Contest Difficulty Level
1 Collecting Beepers Categories UVA 1
2 Flags Categories Timus 1
3 Coin Change Categories UVA 1
4 Histogram Categories SPOJ 1
5 Grandpa's Walk Categories Live Archive 2012 Asia - Jakarta 1
6 ShorterSuperSum Categories TopCoder SRM 467 - Div2 easy] (14151) 1
7 Tri graphs Categories SPOJ 1
8 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 1
9 Square Brackets Categories SPOJ 1
10 Kefa and First Steps Categories Codeforces Codeforces Round #321 (Div. 2) 1
11 Kuriyama Mirai's Stones Categories Codeforces Codeforces Round #248 (Div. 2) 1
12 Permutation Arrays Categories UVA 1
13 Feynman Categories SPOJ 1
14 Dividing coins Categories UVA 1
15 Blueberries Categories SPOJ 1
16 Longest Palindrome Categories UVA 1
17 Jill Rides Again Categories UVA 1
18 Trip Categories SPOJ 1
19 Princess Farida Categories SPOJ 1
20 Black or White Categories SPOJ 1
21 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
22 Bytelandian gold coins Categories SPOJ 1
23 The Bale Tower Categories TJU 1
24 The Twin Towers Categories UVA 1
25 Bridging signals Categories Live Archive 2003 Europe - Northwestern 1
26 In Danger Categories SPOJ 1
27 Pilots Categories SPOJ 1
28 Wedding shopping Categories UVA 1
29 Coins Game Categories SPOJ 1
30 Staircases Categories Timus 1
31 The Tower of Babylon Categories UVA 1
32 Piggy-Bank Categories SPOJ 1
33 Take the Land Categories UVA 1
34 Testing the CATCHER Categories UVA 1
35 Dreamoon and WiFi Categories Codeforces Codeforces Round #272 (Div. 2) 1
36 Twin Primes Categories UVA 1
37 Help the soldier Categories SPOJ 1
38 Anton and Danik Categories Codeforces Codeforces Round #379 (Div. 2) 1
39 Alphacode Categories SPOJ 1
40 Fibonacci Freeze Categories UVA 1
41 Given Length and Sum of Digits... Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
42 Prime Digital Roots Categories Live Archive 2001 South Pacific 1
43 Largest Rectangle in a Histogram Categories SPOJ 1
44 The jackpot Categories UVA 1
45 THE DRUNK JAILER Categories PKU 1
46 Tiling a Grid With Dominoes Categories SPOJ 1
47 Easy Longest Increasing Subsequence Categories SPOJ 1
48 Optimal Array Multiplication Sequence Categories UVA 1
49 Simple Math Categories A2 Online Judge 1
50 Is Bigger Smarter? Categories UVA 1
51 Lucky Tickets Categories Timus 1
52 23 out of 5 Categories UVA 1
53 ABC Path Categories SPOJ 1
54 Cleaning Robot Categories SPOJ 1
55 Adjacent Bit Counts Categories SPOJ 1
56 No Change Categories SPOJ 1
57 How do you add? Categories UVA 1
58 DNA Sequences Categories SPOJ 1
59 Cutting Sticks Categories UVA 1
60 Enormous Input Test Categories CodeChef 1
61 Puzzles Categories Codeforces Codeforces Round #196 (Div. 2) 1
62 Binary Search Tree Categories Live Archive 2010 Asia - Daejeon 1
63 Cormen --- The Best Friend Of a Man Categories Codeforces Codeforces Round #377 (Div. 2) 1
64 Membership Management Categories Live Archive 2010 Asia - Tokyo 1
65 Philosophers Stone Categories SPOJ 1
66 Ilya and Queries Categories Codeforces Codeforces Round #186 (Div. 2) 1
67 Buying Apples! Categories SPOJ 1
68 Cross-country Categories SPOJ 1
69 I Can Guess the Data Structure! Categories UVA 1
70 Luggage Categories UVA 1
71 Stacking Boxes Categories UVA 1
72 Permutations Categories SPOJ 1
73 Binary Lexicographic Sequence Categories Timus 1
74 Largest Submatrix Categories UVA 1
75 Vacation Categories UVA 1
76 Quasi Binary Categories Codeforces Codeforces Round #300 1
77 Boredom Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 1
78 Tiling a Grid With Dominoes Categories Live Archive 2007 North America - Greater NY 1
79 Chocolate Categories SPOJ 1
80 Scientific Conference Categories Timus 1
81 Milliard Vasya's Function Categories Timus 1
82 Candy Categories Live Archive 2008 Latin America - South America 1
83 Flowers Categories Codeforces Codeforces Round #271 (Div. 2) 1
84 ACM (ACronymMaker) Categories SPOJ 1
85 Omar Categories A2 Online Judge 1
86 Hotels Along the Croatian Coast Categories SPOJ 1
87 Hangover Categories PKU 1
88 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
89 Palindrome 2000 Categories SPOJ 1
90 Pearls Categories Live Archive 2002 Europe - Northwestern 1
91 0110SS Categories SPOJ 1
92 Trees Categories Live Archive 2004 South Pacific 1
93 Fishmonger Categories SPOJ 1
94 Maximum Sum Categories UVA 1
95 Sereja and Suffixes Categories Codeforces Codeforces Round #215 (Div. 2) 1
96 Sums in a Triangle Categories CodeChef 1
97 What Goes Up Categories UVA 1
98 Candy Categories SPOJ 1
99 Prime Permutations Categories CodeChef 1
100 History Grading Categories UVA 1
101 Tiling Up Blocks Categories Live Archive 2003 Asia - Kaohsiung 1
102 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 1
103 Wachovia Bank Categories SPOJ 1
104 Sums in a Triangle Categories SPOJ 1
105 Bee Walk Categories SPOJ 1
106 Aibohphobia Categories SPOJ 1
107 COSTLY CHESS Categories SPOJ 1
108 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
109 Divisibility by Eight Categories Codeforces Codeforces Round #306 (Div. 2) 1
110 Longest Common Substring Categories SPOJ 1
111 Bicoloring Categories UVA 1
112 LATGACH3 Categories SPOJ 1
113 SuperSale Categories UVA 1
114 MAXIMUM WOOD CUTTER Categories SPOJ 1
115 K-based Numbers. Version 2 Categories Timus 1
116 Woodcutters Categories Codeforces Codeforces Round #303 (Div. 2) 1
117 Petya and Strings Categories Codeforces Codeforces Beta Round #85 (Div. 2 Only) 1
118 Training for final Categories SPOJ 1
119 Party Schedule Categories SPOJ 1
120 Strategic Defense Initiative Categories UVA 1
121 Two Substrings Categories Codeforces Codeforces Round #306 (Div. 2) 1
122 Equal Sum Sets Categories Live Archive 2013 Asia - Aizu 1
123 The Double HeLiX Categories SPOJ 1
124 Save Thy Toys Categories SPOJ 1
125 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
126 QAQ Categories Codeforces Codeforces Round #447 (Div. 2) 1
127 Exploring Pyramids Categories Live Archive 2005 Europe - Northeastern 1
128 Maximum in Table Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 1
129 Scuba diver Categories SPOJ 1
130 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
131 Trip Planning Categories Live Archive 2008 Asia - Taipei 1
132 New Year and Hurry Categories Codeforces Good Bye 2016 1
133 Two Ends Categories SPOJ 1
134 Fool the Police Categories SPOJ 1
135 Exponentiation Categories PKU 1
136 Phidias Categories SPOJ 1
137 Can you answer these queries I Categories SPOJ 1
138 Edit distance Categories SPOJ 1
139 XOR Maximization Categories SPOJ 1
140 BerSU Ball Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
141 Positive or Negative Categories A2 Online Judge 1
142 Roads Categories SPOJ 1
143 Maximum Sum Categories Timus 1
144 Tile Code Categories Live Archive 2007 Asia - Seoul 1
145 Aliens at the train Categories SPOJ 1
146 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
147 Let Me Count The Ways Categories UVA 1
148 Flipping Game Categories Codeforces Codeforces Round #191 (Div. 2) 1
149 Tower of Babylon Categories SPOJ 1
150 Perfection Categories UVA 1
151 Making Change Categories TJU 1
152 Seinfeld Categories SPOJ 1
153 Sum of Digits Categories SPOJ 1
154 Pocket Money Categories SPOJ 1
155 Homer Simpson Categories UVA 1
156 BLAST Categories SPOJ 1
157 Longest Common Subsequence Categories UVA 1
158 K-based Numbers Categories Timus 1
159 Divisibility Categories UVA 1
160 Longest Run on a Snowboard Categories UVA 1
161 Mashmokh and ACM Categories Codeforces Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) 1
162 Vertex Cover Categories SPOJ 1
163 Martian Mining Categories SPOJ 1
164 Getting in Line Categories UVA 1
165 Square Country Categories Timus 1
166 Building Bridges Categories SPOJ 1
167 Divisible Group Sums Categories UVA 1
168 Generations of Tribbles Categories Live Archive 2013 North America - Pacific Northwest 1
169 Mice and Maze Categories Live Archive 2001 Europe - Southwestern 1
170 Ingenuous Cubrency Categories UVA 1
171 DIE HARD Categories SPOJ 1
172 Drazil and Factorial Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 1
173 Treats for the Cows Categories SPOJ 1
174 Sweet and Sour Rock Categories SPOJ 1
175 Fibonacci Words Categories Live Archive 2012 World Finals - Warsaw 1
176 A+B Problem Categories PKU 1
177 Summing to a Square Prime Categories SPOJ 1
178 Compromise Categories UVA 1
179 Distinct Subsequences Categories SPOJ 1
180 Prime Path Categories Live Archive 2006 Europe - Northwestern 1
181 Mixtures Categories SPOJ 1
182 Rectangles Perimeter Categories SPOJ 1
183 Binary Apple Tree Categories Timus 1
184 Robot Instructions Categories UVA 1
185 Magic Grid Categories SPOJ 1
186 Number of Ways Categories Codeforces Codeforces Round #266 (Div. 2) 1
187 Alphacode Categories Live Archive 2004 North America - East Central NA 1
188 Party Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 1
189 Rent your airplane and make money Categories SPOJ 1
190 Metro Categories Timus 1
191 Non-Decreasing Digits Categories SPOJ 1
192 Fence Categories Codeforces Codeforces Round #211 (Div. 2) 1
193 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
194 The Great Ball Categories SPOJ 1
195 DZY Loves Chessboard Categories Codeforces Codeforces Round #254 (Div. 2) 1
196 To the Max Categories PKU 1
197 Assignments Categories SPOJ 1
198 Chat room Categories Codeforces Codeforces Beta Round #54 (Div. 2) 1
199 Joysticks Categories Codeforces Codeforces Round #345 (Div. 2) 1
200 Dollars Categories UVA 1
201 The 3n + 1 problem Categories UVA 1
202 The Knapsack Problem Categories SPOJ 1
203 Forming Quiz Teams Categories UVA 1
204 Watermelon Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
205 Unidirectional TSP Categories UVA 1
206 Activities Categories SPOJ 1
207 Chop Ahoy! Revisited! Categories SPOJ 1
208 Partition Categories SPOJ 2
209 Anniversary Party Categories Timus 2
210 Leaves Categories SPOJ 2
211 Problem 3 Categories SPOJ 2
212 Chain Reaction Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 2
213 Pride Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 2
214 Quadratic Equation Categories SPOJ 2
215 Flight Planner Categories UVA 2
216 BATMAN3 Categories SPOJ 2
217 Bit Mask Categories UVA 2
218 Restoring Password Categories Codeforces Codeforces Beta Round #76 (Div. 2 Only) 2
219 Destruction Cannon Categories URI 2
220 Jugs Categories UVA 2
221 Chopsticks Categories UVA 2
222 Musketeers Categories SPOJ 2
223 Nested Dolls Categories SPOJ 2
224 String to Palindrome Categories UVA 2
225 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
226 A DP Problem Categories Live Archive 2003 Asia - Tehran 2
227 Counting K-Rectangle Categories SPOJ 2
228 Catch Fish Categories SPOJ 2
229 Counting binary strings Categories SPOJ 2
230 Sequence Categories Live Archive 2014 Asia - Kuala Lumpur 2
231 Yoda Goes Palindromic ! Categories SPOJ 2
232 Little Elephant and Painting Categories CodeChef 2
233 Painting the balls Categories SGU 2
234 Interesting number Categories SPOJ 2
235 Always on the run Categories UVA 2
236 Fibonacci System Categories Live Archive 2008 Europe - Northeastern 2
237 Kyoya and Colored Balls Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 2
238 Journey Categories Codeforces Codeforces Round #428 (Div. 2) 2
239 Covered Path Categories Codeforces Codeforces Round #298 (Div. 2) 2
240 Esferas Categories SPOJ 2
241 String Partition Categories UVA 2
242 KTV Categories UVA 2
243 Ra-One Numbers Categories SPOJ 2
244 BATMAN2 Categories SPOJ 2
245 Diving for Gold Categories UVA 2
246 Soldier and Number Game Categories Codeforces Codeforces Round #304 (Div. 2) 2
247 Erdos Numbers Categories Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 2
248 Inna and Choose Options Categories Codeforces Codeforces Round #234 (Div. 2) 2
249 Timofey and a tree Categories Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 2
250 Polo the Penguin and Strings Categories Codeforces Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) 2
251 Menu Categories SPOJ 2
252 Another Box Problem Categories SPOJ 2
253 String problem Categories SPOJ 2
254 Weights and Measures Categories UVA 2
255 Game of Sum Categories UVA 2
256 Queue Categories UVA 2
257 Maximum sum on a torus Categories UVA 2
258 Bicolored Horses Categories Timus 2
259 Mosaic Categories Live Archive 2009 North America - Southeast USA 2
260 Make Palindrome Categories UVA 2
261 Three-coloring of binary trees Categories SPOJ 2
262 Making Change Categories UVA 2
263 Deliver pizza Categories SPOJ 2
264 NERED Categories SPOJ 2
265 Feline Olympics - Mouseball Categories SPOJ 2
266 Point Connection Game in a Circle Categories SPOJ 2
267 Pebble Solitaire Categories UVA 2
268 Boxes Categories UVA 2
269 Square Categories UVA 2
270 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
271 Con-Junctions Categories SPOJ 2
272 Nudnik Photographer Categories Timus 2
273 Chop Ahoy! Revisited! Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 2
274 Pebbles Categories Live Archive 2007 North America - Pacific Northwest & North America - Southern California 2
275 Vasya and String Categories Codeforces Codeforces Round #354 (Div. 2) 2
276 Game of Credit Cards Categories Codeforces Codeforces Round #401 (Div. 2) 2
277 Sinking Ship Categories Codeforces Codeforces Beta Round #59 (Div. 2) 2
278 Again Palindrome Categories UVA 2
279 Color the Fence Categories Codeforces Codeforces Round #202 (Div. 2) 2
280 Hard problem Categories Codeforces Codeforces Round #367 (Div. 2) 2
281 Reposts Categories Codeforces VK Cup 2015 - Qualification Round 1 2
282 Up Subsequence Categories SPOJ 2
283 Murcia's Skyline Categories UVA 2
284 New Year and Domino Categories Codeforces Good Bye 2015 2
285 Walking on the Safe Side Categories UVA 2
286 Land Acquisition Categories SPOJ 2
287 Dancing Cows Categories SPOJ 2
288 Tennis Championship Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 2
289 Making A Budget Categories SPOJ 2
290 Bing it Categories Live Archive 2009 Asia - Harbin 2
291 Counting The Way of Bracket Replacement Categories SPOJ 2
292 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 2
293 Railway Tickets Categories Timus 2
294 False Mirrors Categories Timus 2
295 Another Longest Increasing Subsequence Problem Categories SPOJ 2
296 Handball Categories UVA 2
297 Threeprime Numbers Categories Timus 2
298 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
299 The Courier Categories SPOJ 2
300 Dab of Backpack Categories SPOJ 2
301 Card Sorting Categories SPOJ 2
302 Fibo Categories A2 Online Judge 2
303 Slurpys Categories UVA 2
304 Tourist Categories SPOJ 2
305 Segments Categories Timus 2
306 Approximating a Constant Range Categories Codeforces Codeforces Round #333 (Div. 2) 2
307 Unnatural Conditions Categories Codeforces AIM Tech Round 5 (rated, Div. 1 + Div. 2) 2
308 Space Elevator Categories PKU 2
309 Modulo Sum Categories Codeforces Codeforces Round #319 (Div. 2) 2
310 Wooden Sticks Categories SPOJ 2
311 Temptation Island Categories SPOJ 2
312 Brackets Sequence Categories Timus 2
313 String Distance and Transform Process Categories UVA 2
314 Photo to Remember Categories Codeforces VK Cup 2015 - Qualification Round 1 2
315 Simple Minded Hashing Categories UVA 2
316 Sum of Different Primes Categories UVA 2
317 Geometric Progression Categories Codeforces Codeforces Round #Pi (Div. 2) 2
318 Functions again Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 2
319 Squares Categories UVA 2
320 Marks Distribution Categories UVA 2
321 Decoding Morse Sequences Categories SPOJ 2
322 Optimal Binary Search Tree Categories UVA 2
323 Ministry Categories Timus 2
324 String Computer Categories UVA 2
325 BATMAN1 Categories SPOJ 2
326 Distinct Subsequences Categories UVA 2
327 Shopping Categories Live Archive 2014 Asia - Tokyo 2
328 Longest Match Categories UVA 2
329 Maximum Sub-sequence Product Categories UVA 2
330 Street Categories SPOJ 2
331 Password Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 2
332 Sorting is not easy Categories SPOJ 2
333 Motoboy Categories URI 2
334 DZY Loves Sequences Categories Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 2
335 LUCIFER Number Categories SPOJ 2
336 Rain Categories SPOJ 2
337 Tight Words Categories UVA 2
338 Particular Palindromes Categories SPOJ 2
339 Alternative Thinking Categories Codeforces Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) 2
340 Dice Categories SPOJ 2
341 Ferry Loading Categories UVA 2
342 Drop the Triples Categories Live Archive 2007 Latin America - South America 2
343 Black-White Grid Categories Live Archive 2006 Asia - Hanoi 2
344 Balancing the Stone Categories SPOJ 2
345 Cow Frisbee Team Categories TJU 2
346 Pay the Price Categories UVA 2
347 Beautiful People Categories SGU 2
348 1807 Categories SPOJ 2
349 Another Tree Problem Categories SPOJ 2
350 Game Show Math Categories UVA 2
351 Chest of Drawers Categories UVA 2
352 The Marriage Interview :-) Categories UVA 2
353 JEDNAKOST Categories SPOJ 2
354 Tiling Categories UVA 2
355 Concert Tour Categories Live Archive 2014 Asia - Bangkok 2
356 Caesar's Legions Categories Codeforces Codeforces Beta Round #89 (Div. 2) 2
357 Trouble of 13-Dots Categories UVA 2
358 Triangular N-Queens Problem Categories Live Archive 2006 North America - Greater NY 2
359 String Shuffle Categories SPOJ 2
360 Mobile Service Categories SPOJ 2
361 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
362 Travelling Salesman Categories UVA 2
363 G-One Numbers Categories SPOJ 2
364 Bar Codes Categories UVA 2
365 I-Keyboard Categories SPOJ 2
366 Tower of Cubes Categories UVA 2
367 Polo the Penguin and Matrix Categories Codeforces Codeforces Round #177 (Div. 2) 2
368 Robbers' watch Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 3
369 The Vindictive Coach Categories UVA 3
370 Probablistic OR Categories SPOJ 3
371 Fetching Cooking Tools Categories CodeChef 3
372 Coloring Trees Categories Codeforces Codeforces Round #369 (Div. 2) 3
373 Car with powers Categories SPOJ 3
374 The least round way Categories Codeforces Codeforces Beta Round #2 3
375 Hopeless Coach Categories TJU 3
376 Little Elephant and Interval Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 3
377 Walking Around Wisely Categories UVA 3
378 Longtail Hedgehog Categories Codeforces Codeforces Round #338 (Div. 2) 3
379 Shopping Trip Categories UVA 3
380 Free Candies Categories UVA 3
381 Mahmoud and a Message Categories Codeforces Codeforces Round #396 (Div. 2) 3
382 Hierarchy Categories Timus 3
383 Alyona and the Tree Categories Codeforces Codeforces Round #358 (Div. 2) 3
384 Bear and Compressing Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
385 Working out Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 3
386 The Debut Album Categories Timus 3
387 Booking System Categories Codeforces Codeforces Round #241 (Div. 2) 3
388 Partition the sequence Categories SPOJ 3
389 Polygon Categories SPOJ 3
390 Cards, bags and coins Categories CodeChef 3
391 Zuma Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 3
392 Permutation Categories Codeforces Codeforces Round #209 (Div. 2) 3
393 Determine it Categories UVA 3
394 Plug-in Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 3
395 Kefa and Dishes Categories Codeforces Codeforces Round #321 (Div. 2) 3
396 Simple Strings Categories Codeforces Educational Codeforces Round 12 3
397 Greedy Hydra Categories SPOJ 3
398 Hackers' Crackdown Categories UVA 3
399 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
400 Bribe the Prisoners Categories SPOJ 3
401 Mike and Feet Categories Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 3
402 Minus Operation Categories SPOJ 3
403 String reduction Categories SPOJ 3
404 Orchard Trees Categories UVA 3
405 Mysterious Present Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 3
406 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 3
407 Beautiful Numbers Categories UVA 3
408 RGBStreet Categories TopCoder SRM 325 - Div2 medium] (10005) 3
409 Little Red Riding Hood Categories UVA 3
410 FOODIE Categories SPOJ 3
411 Ilya and Escalator Categories Codeforces Codeforces Round #293 (Div. 2) 3
412 Count Paths Categories A2 Online Judge 3
413 Long Path Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
414 Budget Travel Categories UVA 3
415 Physics Practical Categories Codeforces Codeforces Round #154 (Div. 2) 3
416 BadNeighbors Categories TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
417 Zeta-Nim Game Categories CodeChef 3
418 Little Girl and Maximum XOR Categories Codeforces Codeforces Round #169 (Div. 2) 3
419 Common Subsequences Categories SPOJ 3
420 Barcode Categories Codeforces Codeforces Round #139 (Div. 2) 3
421 Slikar Categories SPOJ 3
422 Re-Arrange II Categories SPOJ 3
423 Candy (Again) Categories SPOJ 3
424 Crime Wave - The Sequel Categories UVA 3
425 Mr. Kitayuta, the Treasure Hunter Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 3
426 Arpa's weak amphitheater and Mehrdad's valuable Hoses Categories Codeforces Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) 3
427 Combo Deal Categories UVA 3
428 Tour Categories UVA 3
429 Building Bridges(HARD) Categories SPOJ 3
430 Many polygons Categories SPOJ 3
431 How Many O's? Categories UVA 3
432 Minimal Coverage Categories Timus 3
433 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
434 New Skateboard Categories Codeforces Educational Codeforces Round 8 3
435 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
436 IOI07 Miners Categories SPOJ 3
437 Scheduling Lectures Categories UVA 3
438 Help Bob Categories SPOJ 3
439 Many Paths, One Destination Categories UVA 3
440 Best Coalitions Categories UVA 3
441 Mike and gcd problem Categories Codeforces Codeforces Round #410 (Div. 2) 3
442 Little Elephant and Movies Categories CodeChef 3
443 Gentlemen Categories Timus 3
444 Fast Food Categories UVA 3
445 Intervals of Monotonicity Categories Timus 3
446 Petya and Java Categories Codeforces Codeforces Beta Round #61 (Div. 2) 3
447 End up with More Teams Categories UVA 3
448 Hard Process Categories Codeforces Educational Codeforces Round 11 3
449 Good Sequences Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 3
450 Most Servings Meal Categories SPOJ 3
451 Writing Code Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 3
452 Cards Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 3
453 Maximum Triangle Area Categories SPOJ 3
454 Sum of Digits Categories Timus 3
455 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 3
456 Omar Loves Candies Categories A2 Online Judge 3
457 Save the problem! Categories Codeforces MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists) 3
458 Even Palindrome Categories SPOJ 3
459 Greenhouse Effect Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 3
460 Distance in Tree Categories Codeforces VK Cup 2012 Round 1 3
461 Journey Categories Codeforces Codeforces Round #374 (Div. 2) 3
462 COUNT PAREN Categories SPOJ 3
463 Pleasing Chief Categories CodeChef 3
464 Xenia and Weights Categories Codeforces Codeforces Round #197 (Div. 2) 3
465 Choosing Capital for Treeland Categories Codeforces Codeforces Round #135 (Div. 2) 3
466 Palindromic Subsequence Categories UVA 3
467 Fewest Flops Categories UVA 3
468 Triangles Categories Live Archive 2014 South Pacific 3
469 Vanya and Scales Categories Codeforces Codeforces Round #308 (Div. 2) 3
470 Sagheer, the Hausmeister Categories Codeforces Codeforces Round #417 (Div. 2) 3
471 String Popping Categories UVA 3
472 A and B and Interesting Substrings Categories Codeforces Codeforces Round #294 (Div. 2) 3
473 ACM (ACronym Maker) Categories Live Archive 2005 North America - East Central NA 3
474 Bear and Prime Numbers Categories Codeforces Codeforces Round #226 (Div. 2) 3
475 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
476 Sereja and Game Categories CodeChef 3
477 I-Keyboard Categories Live Archive 2000 Europe - Central 3
478 Recycling Bottles Categories Codeforces Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) 3
479 Bear and Blocks Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
480 Ladder Categories Codeforces Codeforces Round #171 (Div. 2) 3
481 Sense of Beauty Categories Timus 3
482 Internet Address Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 3
483 Ada and Game Categories SPOJ 3
484 Make Psycho Categories SPOJ 3
485 AGTC Categories UVA 3
486 Dynamic LCA Categories SPOJ 3
487 An impassioned circulation of affection Categories Codeforces Codeforces Round #418 (Div. 2) 3
488 Greg and Graph Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
489 Paid Roads Categories SPOJ 3
490 Traveling by Stagecoach Categories SPOJ 3
491 Mnemonics and Palindromes Categories Timus 3
492 Lazy Math Instructor Categories Live Archive 2000 Asia - Tehran 3
493 The Secret of an Aerolite Categories SPOJ 3
494 The Matrix Game Categories CodeChef 3
495 Alyona and Spreadsheet Categories Codeforces Codeforces Round #401 (Div. 2) 3
496 Painting Fence Categories Codeforces Codeforces Round #256 (Div. 2) 3
497 Bubble Sort Graph Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 3
498 Raucous Rockers Categories UVA 3
499 Term Strategy Categories UVA 3
500 Hippity Hopscotch Categories UVA 3
501 Art Union Categories Codeforces Codeforces Round #241 (Div. 2) 3
502 Minion Circle Categories CodeChef 4
503 Lov-e Pap Pap-e Polti Categories SPOJ 4
504 Maximum Submatrix 2 Categories Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 4
505 Generate a String Categories Codeforces Educational Codeforces Round 16 4
506 Riding in a Lift Categories Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 4
507 Gerald and Giant Chess Categories Codeforces Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) 4
508 Appleman and Tree Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 4
509 Bottle Taps Categories Timus 4
510 XOR Equation Categories Codeforces 8VC Venture Cup 2016 - Final Round 4
511 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 4
512 Gasoline Station Categories Timus 4
513 Antimonotonicity Categories UVA 4
514 Philip J. Fry Problem Categories UVA 4
515 Expect the Expected Categories UVA 4
516 Red-Green Towers Categories Codeforces Codeforces Round #273 (Div. 2) 4
517 Zero Tree Categories Codeforces Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) 4
518 Who is The Boss Categories SPOJ 4
519 Assignments Categories Live Archive 2010 Asia - Harbin 4
520 The Bridges of Kolsberg Categories UVA 4
521 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
522 Bright Bracelet Categories Live Archive 2003 North America - Mid-Central USA 4
523 Malevich Strikes Back! Categories Timus 4
524 Buns Categories Codeforces Codeforces Beta Round #82 (Div. 2) 4
525 Classmates 2 Categories Timus 4
526 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
527 Babaei and Birthday Cake Categories Codeforces Codeforces Round #343 (Div. 2) 4
528 A Lot of Games Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
529 Fire Categories Codeforces Codeforces Round #436 (Div. 2) 4
530 XOR-pyramid Categories Codeforces Codeforces Round #483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!] & Codeforces Round #483 (Div. 2) [Thanks, Botan Investments and Victor Shaburov!] 4
531 Let go to the movies Categories SPOJ 4
532 Free Parentheses Categories UVA 4
533 Dominoes Categories SPOJ 4
534 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 4
535 Image Preview Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 4
536 Going Postal Categories Live Archive 2014 South Pacific 4
537 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 4
538 Binary Search Categories Live Archive 2000 Europe - Northeastern 4
539 SMS Categories Timus 4
540 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 4
541 The Values You Can Make Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 4
542 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
543 INVITATION FOR TECHOFES Categories SPOJ 4
544 Zeros and Ones Categories UVA 4
545 The Intriguing Obsession Categories Codeforces Codeforces Round #439 (Div. 2) 4
546 Bag of mice Categories Codeforces Codeforces Round #105 (Div. 2) 4
547 Fools and Roads Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
548 Dima and Salad Categories Codeforces Codeforces Round #214 (Div. 2) 4
549 Bridge Building Categories UVA 4
550 Matches Categories UVA 4
551 The Child and Zoo Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 4
552 Shaass and Bookshelf Categories Codeforces Codeforces Round #178 (Div. 2) 4
553 Convex Polygons Categories SPOJ 4
554 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
555 Chocolate Categories SPOJ 4
556 BATMAN4 Categories SPOJ 4
557 Another Assignment Problem Categories SPOJ 4
558 Avoiding Jungle in the Dark Categories UVA 4
559 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 4
560 Book of Evil Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 4
561 Clique Problem Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 4
562 Fire Again Categories Codeforces Codeforces Beta Round #35 (Div. 2) 4
563 Crack Categories Timus 4
564 Digit Sum Categories UVA 4
565 Boy Scouts Categories SPOJ 4
566 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
567 ICPC Team Strategy Categories UVA 4
568 Round Table Knights Categories Codeforces Codeforces Beta Round #65 (Div. 2) 4
569 Bit by Bit Categories SPOJ 4
570 Little Elephant and Blocks Categories CodeChef 4
571 Civilization Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
572 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
573 Cookies Categories Codeforces Codeforces Beta Round #64 4
574 DIVSEQ Categories SPOJ 4
575 Can U Win? Categories UVA 4
576 Lemon Tale Categories Timus 4
577 Arthur and Table Categories Codeforces Codeforces Round #311 (Div. 2) 4
578 Matchsticks Categories TJU 4
579 Reberland Linguistics Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 4
580 Pie Rules Categories Codeforces MemSQL Start[c]UP 3.0 - Round 1 4
581 Expression Again Categories UVA 4
582 Drop the Triples Categories SPOJ 4
583 Cow Program Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
584 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
585 Dumb Bones Categories UVA 4
586 Mars Canals Categories Timus 4
587 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 4
588 Chocolate Box Categories UVA 4
589 Balanced Numbers Categories SPOJ 4
590 Tiling Dominoes Categories UVA 4
591 Communication Fiend Categories Timus 4
592 Antimatter Ray Clearcutting Categories UVA 4
593 Rent your airplane and make money Categories Live Archive 2003 Europe - Southwestern 4
594 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 4
595 Folding Categories Timus 4
596 Number of Paths in the Empire Categories SGU 4
597 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
598 Python Indentation Categories Codeforces Codeforces Round #455 (Div. 2) 4
599 Forming Teams Categories Codeforces Codeforces Round #133 (Div. 2) 4
600 Batman Categories UVA 4
601 Account Book Categories UVA 4
602 Cái túi ( Hard version ) Categories SPOJ Vietnam 4
603 Jeff and Rounding Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 4
604 Prefixes and Suffixes Categories Codeforces Codeforces Round #246 (Div. 2) 4
605 Queries for Number of Palindromes Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
606 Fox And Jumping Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
607 Letter Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 4
608 Vladik and Memorable Trip Categories Codeforces Codeforces Round #416 (Div. 2) 4
609 Najkraci Categories SPOJ 4
610 Ingredients Categories SPOJ 4
611 Chloe and pleasant prizes Categories Codeforces Codeforces Round #384 (Div. 2) 4
612 Once Again... Categories Codeforces Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) 4
613 Busy Programmer Categories UVA 4
614 Drazil and Tiles Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
615 Namit In Trouble Categories SPOJ 4
616 Trees Again Categories SPOJ 4
617 One-two, One-two 2 Categories Timus 4
618 Fatawy Categories SPOJ 4
619 Bad Luck Island Categories Codeforces Codeforces Round #301 (Div. 2) 4
620 New Year and Fireworks Categories Codeforces Good Bye 2016 4
621 A and B and Lecture Rooms Categories Codeforces Codeforces Round #294 (Div. 2) 4
622 Divide and conquer Categories CodeChef 4
623 Party Categories A2 Online Judge 4
624 Huffman´s Greed Categories SPOJ 5
625 Dima and Hares Categories Codeforces Codeforces Round #208 (Div. 2) 5
626 Valid Sets Categories Codeforces Codeforces Round #277 (Div. 2) 5
627 Jeff and Furik Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 5
628 Square Subsets Categories Codeforces Codeforces Round #448 (Div. 2) 5
629 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
630 Fibonacci Words Categories UVA 5
631 JUMPING DORA Categories SPOJ 5
632 Substring and Subsequence Categories Codeforces VK Cup 2012 Round 2 5
633 Two Paths Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
634 Counting Rectangles is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 5
635 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
636 Count Digits Categories CodeChef 5
637 Winter is here Categories Codeforces Codeforces Round #428 (Div. 2) 5
638 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 5
639 Sums of Digits Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 5
640 Connected Components Categories Codeforces Croc Champ 2013 - Round 1 5
641 A Simple Task Categories Codeforces Codeforces Beta Round #11 5
642 IPL - CRICKET TOURNAMENT Categories SPOJ 5
643 Inversions problem Categories Codeforces Rockethon 2015 5
644 Patches Categories URI 5
645 Hanoi Factory Categories Codeforces Codeforces Round #401 (Div. 2) 5
646 Testing the CATCHER Categories Live Archive 1994 World Finals - Phoenix 5
647 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
648 Ciel and Duel Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 5
649 Spiders Categories Codeforces School Regional Team Contest, Saratov, 2011 5
650 Dynasty Puzzles Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
651 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 5
652 Restaurant Categories Codeforces Testing Round #12 5
653 Anniversary Firework Categories Timus 5
654 K-based Numbers. Version 3 Categories Timus 5
655 Running Track Categories Codeforces Codeforces Round #338 (Div. 2) 5
656 Berzerk Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 5
657 Pillars Categories Codeforces Codeforces Round #271 (Div. 2) 5
658 Basketball Team Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
659 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 5
660 Sereja and Bubble Sort Categories CodeChef 5
661 Lucky Common Subsequence Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
662 WordMath Categories TopCoder Unknown () 5
663 Mario Kart Categories A2 Online Judge 5
664 Optimal Cut Categories UVA 5
665 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
666 Subsequence Problem Categories SPOJ 5
667 Running with Obstacles Categories Codeforces VK Cup 2016 - Qualification Round 1 5
668 Sequence Categories Codeforces Codeforces Beta Round #13 5
669 Roman and Numbers Categories Codeforces Codeforces Round #235 (Div. 2) 5
670 Super M Categories Codeforces Codeforces Round #328 (Div. 2) 5
671 Levko and Array Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 5
672 Strip Categories Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 5
673 Sum Categories Codeforces Codeforces Beta Round #46 (Div. 2) 5
674 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
675 Independent Attacking Zones Categories UVA 5
676 Connect Line Segments Categories SPOJ 5
677 An overnight dance in discotheque Categories Codeforces Codeforces Round #418 (Div. 2) 5
678 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
679 How many trees? Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 5
680 Allergy Test Categories UVA 5
681 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
682 Bear and Tower of Cubes Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 5
683 Obsessive String Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 5
684 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
685 Minimization Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 5
686 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
687 Candy Categories UVA 5
688 Weak Links Categories UVA 5
689 Summing Slopes Categories CodeChef 5
690 Longest Increasing Sequence Categories UVA 5
691 DNA Laboratory Categories SPOJ 5
692 Elimination Categories Codeforces RCC 2014 Warmup (Div. 2) 5
693 Happiness to People! Categories Timus 5
694 CreatureTraining Categories TopCoder TCO08 Round 2 - Div1 medium] (12012) 5
695 Upgrading Array Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 5
696 HexagonalBattlefield Categories TopCoder SRM 449 - Div1 medium] (13903) 5
697 Roadworks Categories Timus 5
698 Increase Sequence Categories Codeforces Codeforces Round #266 (Div. 2) 5
699 E-mail Categories Timus 5
700 Atomic Car Race Categories UVA 5
701 Covering Sets Categories CodeChef 5
702 Hotel Categories Live Archive 2005 Asia - Tehran 5
703 Chocolate Bar Categories Codeforces Educational Codeforces Round 1 5
704 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
705 Antimatter Categories Codeforces Codeforces Round #225 (Div. 1) 5
706 Enterprise Categories Timus 5
707 Choosing Balls Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 5
708 Ship Routes Categories Timus 5
709 Robot Rapping Results Report Categories Codeforces CROC 2016 - Elimination Round 5
710 The Unreal Tournament Categories UVA 5
711 GO FOR DIAMONDS Categories SPOJ 5
712 Symmetric and Transitive Categories Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 5
713 Vasya and Beautiful Arrays Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 5
714 Train Categories Timus 5
715 The Islands Categories UVA 5
716 Alyona and Strings Categories Codeforces Codeforces Round #358 (Div. 2) 5
717 The Bakery Categories Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 5
718 Coin Changing Again Categories UVA 5
719 Checkout Assistant Categories Codeforces Codeforces Beta Round #19 5
720 Cargo Agency Categories Timus 5
721 Paint the Tree Categories CodeChef 5
722 Promotion Categories URI 5
723 Famil Door and Brackets Categories Codeforces Codeforces Round #343 (Div. 2) 5
724 Correcting Mistakes Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
725 Spy Syndrome 2 Categories Codeforces Manthan, Codefest 16 5
726 Lucky Tree Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 5
727 Wet Shark and Blocks Categories Codeforces Codeforces Round #341 (Div. 2) 5
728 Iahub and Permutations Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 5
729 Save the Python Programmers! Categories Live Archive 2010 North America - Pacific Northwest 6
730 Anfisa the Monkey Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 6
731 Maximum Sub-sequence Product Categories Live Archive 1996 Europe - Southeastern 6
732 Road Improvement Categories Codeforces Codeforces Round #302 (Div. 1) 6
733 Two Strings Categories Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 6
734 Anya and Cubes Categories Codeforces Codeforces Round #297 (Div. 2) 6
735 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
736 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
737 Beaver Categories Codeforces Codeforces Beta Round #71 6
738 Minesweeper 1D Categories Codeforces Codeforces Round #237 (Div. 2) 6
739 New Year Domino Categories Codeforces Good Bye 2014 6
740 Common Palindrome Categories UVA 6
741 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
742 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 6
743 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
744 Special Matrices Categories Codeforces Codeforces Round #277.5 (Div. 2) 6
745 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 6
746 Stripe 2 Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
747 Looking for Order Categories Codeforces Codeforces Beta Round #8 6
748 Snakes Categories A2 Online Judge 6
749 Jzzhu and Numbers Categories Codeforces Codeforces Round #257 (Div. 1) 6
750 Alternative Solution Categories Timus 6
751 Sort that Queue Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 6
752 Array GCD Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 6
753 Pluses everywhere Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
754 EKG Categories Codeforces ABBYY Cup 3.0 6
755 Wizards and Huge Prize Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 6
756 Plants vs. Zombies HD SP Categories UVA 6
757 LIS of Sequence Categories Codeforces Codeforces Round #277 (Div. 2) 6
758 Substitutes in Number Categories Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 6
759 Money for Nothing Categories Live Archive 2017 World Finals - Rapid City 6
760 Palindrome Categories Codeforces MemSQL start[c]up Round 2 - online version 6
761 ACM Diagnostics Categories Timus 6
762 Little Elephant and LCM Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
763 Decimation Categories Timus 6
764 Permutation Sum Categories Codeforces Codeforces Round #175 (Div. 2) 6
765 Train Categories Codeforces Codeforces Beta Round #68 6
766 Phone Talks Categories Codeforces VK Cup 2012 Qualification Round 1 6
767 Partial Teacher Categories Codeforces Manthan 2011 6
768 Animals Categories Codeforces Codeforces Beta Round #35 (Div. 2) 6
769 Watching Fireworks is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
770 Pig and Palindromes Categories Codeforces Codeforces Round #316 (Div. 2) 6
771 Salary for Robots Categories Timus 6
772 MagicNaming Categories TopCoder SRM 526.5 - Div2 hard] (14762) 6
773 Incrementing The Integer Categories SPOJ 6
774 Martian Army Categories Timus 6
775 Yet Another Number Game Categories Codeforces Codeforces Round #173 (Div. 2) 6
776 Paint templates Categories SPOJ 6
777 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
778 Beautiful numbers Categories Codeforces Codeforces Beta Round #51 6
779 Maxim and Restaurant Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 6
780 Vladik and cards Categories Codeforces Codeforces Round #384 (Div. 2) 6
781 Fence Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
782 Buses Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
783 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
784 Least Common Multiple Categories Live Archive 2014 South Pacific 6
785 Solitaire Categories Codeforces Codeforces Round #130 (Div. 2) 6
786 Karen and Supermarket Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
787 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
788 Hamiltonian Spanning Tree Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 6
789 Dynamic Problem Scoring Categories Codeforces VK Cup 2017 - Round 3 6
790 Longest Common Subsequence Categories SPOJ 6
791 Subsequences Categories Codeforces Testing Round #12 6
792 Ilya and Roads Categories Codeforces Codeforces Round #186 (Div. 2) 6
793 Dreamoon and Strings Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 6
794 Okabe and El Psy Kongroo Categories Codeforces Codeforces Round #420 (Div. 2) 6
795 Random Task Categories Codeforces Codeforces Round #247 (Div. 2) 6
796 The Maths Lecture Categories Codeforces Codeforces Round #287 (Div. 2) 6
797 Numbers Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
798 Mystic Craft Categories SPOJ 6
799 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 6
800 Brainwashing Device Categories Timus 6
801 Fedor and Essay Categories Codeforces Codeforces Round #267 (Div. 2) 6
802 Jill Rides Again Categories Live Archive 1997 World Finals - San Jose 6
803 Table Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
804 Shooting Gallery Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 6
805 Trains and Statistic Categories Codeforces Codeforces Round #353 (Div. 2) 6
806 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
807 Mahmoud and a xor trip Categories Codeforces Codeforces Round #396 (Div. 2) 6
808 Let's Play Osu! Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 6
809 Segment Tree Categories SPOJ 6
810 Array Queries Categories Codeforces Educational Codeforces Round 19 6
811 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
812 Two out of Three Categories Codeforces Yandex.Algorithm 2011 Qualification 2 6
813 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 6
814 Magic Numbers Categories Codeforces Educational Codeforces Round 8 6
815 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 6
816 Sonya and Problem Wihtout a Legend Categories Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 6
817 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 6
818 Sereja and Subsequences Categories Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 6
819 Coloring Brackets Categories Codeforces Codeforces Round #106 (Div. 2) 6
820 Duff in Beach Categories Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 6
821 The Top-Code Categories SPOJ 6
822 Oil Skimming Categories A2 Online Judge 6
823 Summing Slopes Categories SPOJ 6
824 Eleven Categories UVA 6
825 Kindergarten Categories Codeforces Codeforces Round #276 (Div. 1) 6
826 Demiurges Play Again Categories Codeforces Codeforces Round #300 6
827 Game --- Mouse and Cheese Categories UVA 6
828 Unusual Sequences Categories Codeforces Codeforces Round #450 (Div. 2) 6
829 Palindromes Categories Codeforces Codeforces Beta Round #98 (Div. 2) 6
830 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
831 Group Projects Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 6
832 ???? ?? ?????? - 2 (round version) Categories Codeforces VK Cup 2015 - Round 1 6
833 Cunning Gena Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 6
834 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
835 AlgoRace Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
836 Beaver Game Categories Codeforces Codeforces Beta Round #70 (Div. 2) 6
837 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 6
838 Demogorgon Categories URI 6
839 New Year Letter Categories Codeforces Good Bye 2013 6
840 Insertion Sort Categories Codeforces Codeforces Round #212 (Div. 2) 6
841 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
842 Match & Catch Categories Codeforces Codeforces Round #244 (Div. 2) 6
843 Bracket Sequence Categories SPOJ 6
844 Eating High Categories Timus 6
845 Vanya and Brackets Categories Codeforces Codeforces Round #308 (Div. 2) 6
846 Memory and Scores Categories Codeforces Codeforces Round #370 (Div. 2) 6
847 LCIS Categories Codeforces Codeforces Beta Round #10 6
848 Arthur and Brackets Categories Codeforces Codeforces Round #288 (Div. 2) 6
849 First Digit Law Categories Codeforces Codeforces Beta Round #50 7
850 Free Market Categories Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 7
851 Two Longest Paths Categories UVA 7
852 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 7
853 Lost in Space Categories Timus 7
854 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 7
855 Intellectual Inquiry Categories Codeforces CROC 2016 - Elimination Round 7
856 Devu and Birthday Celebration Categories Codeforces Codeforces Round #251 (Div. 2) 7
857 Ralph and Mushrooms Categories Codeforces Codeforces Round #447 (Div. 2) 7
858 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
859 Game with Powers Categories Codeforces Codeforces Round #188 (Div. 1) 7
860 Painting The Wall Categories Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 7
861 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
862 Join Categories Timus 7
863 Cats Transport Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
864 Identify the Number Categories A2 Online Judge 7
865 On the Bench Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 7
866 LionAge II Categories Codeforces Codeforces Beta Round #66 7
867 Segment Sum Categories Codeforces Educational Codeforces Round 53 (Rated for Div. 2) 7
868 Education Reform Categories Codeforces Codeforces Beta Round #90 7
869 Duckindromes Categories UVA 7
870 Brainfuck Categories Timus 7
871 Bulbo Categories Codeforces Bubble Cup 8 - Finals [Online Mirror] 7
872 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
873 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 7
874 Lunar Code Categories Timus 7
875 Nanami's Digital Board Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 7
876 Kleofáš and the n-thlon Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 7
877 Top Secret Task Categories Codeforces Codeforces Round #327 (Div. 1) 7
878 Ant Man Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
879 Dot Categories Codeforces Codeforces Beta Round #63 (Div. 2) 7
880 Yet Another Assignment Problem Categories SPOJ 7
881 Phone Number Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
882 Transmitting Levels Categories Codeforces ZeptoLab Code Rush 2015 7
883 Maximum Questions Categories Codeforces Codeforces Round #450 (Div. 2) 7
884 Colored Tiles Categories UVA 7
885 Hongcow Buys a Deck of Cards Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
886 Word Cut Categories Codeforces Croc Champ 2012 - Round 2 7
887 Game Categories Codeforces Codeforces Beta Round #46 (Div. 2) 7
888 Lucky Number Representation Categories Codeforces Codeforces Round #206 (Div. 1) 7
889 Treeland Tour Categories Codeforces Codeforces Round #279 (Div. 2) 7
890 Martian Plates Categories Timus 7
891 Fence Divercity Categories Codeforces Codeforces Round #346 (Div. 2) 7
892 FibonacciKnapsack Categories TopCoder SRM 352 - Div1 medium] (10709) 7
893 Famil Door and Roads Categories Codeforces Codeforces Round #343 (Div. 2) 7
894 Vladik and chat Categories Codeforces Codeforces Round #390 (Div. 2) 7
895 Guess the Tree Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 7
896 Quest Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
897 Special Grid Categories Codeforces Codeforces Round #249 (Div. 2) 7
898 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
899 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
900 Name That Tune Categories Codeforces Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) 7
901 Captains Mode Categories Codeforces Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) 7
902 Pictures with Kittens (hard version) Categories Codeforces Codeforces Round #521 (Div. 3) 7
903 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 7
904 Genetic Engineering Categories Codeforces Rockethon 2014 7
905 Lannister Army Categories SPOJ 7
906 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
907 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
908 Sereja and Two Sequences Categories Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 7
909 Yaroslav and Two Strings Categories Codeforces Codeforces Round #179 (Div. 2) 7
910 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
911 Component Testing Categories Live Archive 2012 North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA 7
912 Yet Another Answer Categories Timus 7
913 Product Sum Categories Codeforces Codeforces Round #344 (Div. 2) 7
914 Longest Run on a Snowboard Categories Live Archive 2006 Asia - Coimbatore 7
915 Rent your airplane and make money Categories UVA 7
916 Right Triangles Categories Codeforces Codeforces Testing Round #1 7
917 TheProgrammingContestDivOne Categories TopCoder SRM 502 - Div1 medium] (14431) 7
918 Table Tennis Categories UVA 7
919 Little Artem and Random Variable Categories Codeforces VK Cup 2016 - Round 2 7
920 Lucky Numbers Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
921 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
922 Traffic Jams in the Land Categories Codeforces Codeforces Round #284 (Div. 1) 7
923 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 7
924 Levko and Strings Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 7
925 Changing a String Categories Codeforces Codeforces Beta Round #52 (Div. 2) 7
926 Valera and Fools Categories Codeforces Codeforces Round #216 (Div. 2) 7
927 Catch Sheep Categories SPOJ 7
928 Zip-line Categories Codeforces Codeforces Round #345 (Div. 1) 7
929 Maxim and Matrix Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 7
930 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
931 Thief in a Shop Categories Codeforces Educational Codeforces Round 9 7
932 Plus and xor Categories Codeforces All-Ukrainian School Olympiad in Informatics 7
933 Divisor Tree Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 7
934 Merry-go-round Categories Timus 7
935 Inna and Sequence Categories Codeforces Codeforces Round #220 (Div. 2) 7
936 Optical Experiment Categories Codeforces Manthan 2011 7
937 Binary Table Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 7
938 Ann and Half-Palindrome Categories Codeforces Codeforces Round #311 (Div. 2) 7
939 Sweets Problem Categories CodeChef 7
940 Pawn Categories Codeforces Codeforces Beta Round #40 (Div. 2) 7
941 Remembering Strings Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 7
942 Fafa and Ancient Mathematics Categories Codeforces Codeforces Round #465 (Div. 2) 7
943 Archer's Travel Categories Timus 7
944 Darth Vader and Tree Categories Codeforces Codeforces Round #291 (Div. 2) 7
945 Beautiful Pairs of Numbers Categories Codeforces Codeforces Round #236 (Div. 1) 7
946 Coin Troubles Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 7
947 Playing War Categories UVA 7
948 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 7
949 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
950 Hiking Categories Codeforces Codeforces Round #277.5 (Div. 2) 7
951 Axis Walking Categories Codeforces Codeforces Round #191 (Div. 2) 7
952 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
953 Birthday Categories Codeforces Codeforces Round #282 (Div. 1) 8
954 The Minimum Number of Variables Categories Codeforces Codeforces Round #171 (Div. 2) 8
955 Gifts Categories Codeforces Codeforces Round #142 (Div. 1) 8
956 Two Melodies Categories Codeforces Educational Codeforces Round 22 8
957 Biathlon Track Categories Codeforces Codeforces Round #242 (Div. 2) 8
958 Drazil and Morning Exercise Categories Codeforces Codeforces Round #292 (Div. 1) 8
959 Cows and Cool Sequences Categories Codeforces Codeforces Round #174 (Div. 1) 8
960 Frequent Flyer Card Categories Timus 8
961 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 8
962 Bombing Categories Codeforces Codeforces Beta Round #47 8
963 Yekaterinburg Subway Categories Timus 8
964 Xenia and Dominoes Categories Codeforces Codeforces Round #199 (Div. 2) 8
965 Tourist Categories Codeforces All-Ukrainian School Olympiad in Informatics 8
966 Inventory Categories UVA 8
967 One-Based Arithmetic Categories Codeforces Testing Round #10 8
968 The Chocolate Spree Categories Codeforces Manthan, Codefest 16 8
969 Petya and Coloring Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) 8
970 Diverse Substrings Categories Codeforces Testing Round #9 8
971 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
972 Lucky Arrays Categories Codeforces Codeforces Round #156 (Div. 1) 8
973 Sereja and Intervals Categories Codeforces Codeforces Round #215 (Div. 1) 8
974 Jeff and Brackets Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 8
975 Bath Queue Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
976 Preorder Test Categories Codeforces 8VC Venture Cup 2016 - Final Round 8
977 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
978 Greg and Caves Categories Codeforces Codeforces Round #179 (Div. 1) 8
979 Balance Categories Codeforces Codeforces Beta Round #17 8
980 Password Categories Codeforces Codeforces Beta Round #71 8
981 Roads in Yusland Categories Codeforces Codeforces Round #352 (Div. 1) 8
982 Genetic engineering Categories Codeforces Yandex.Algorithm 2011 Round 2 8
983 E-The dynamic programming problem2 Categories TJU 8
984 Beads Categories Codeforces Codeforces Beta Round #8 8
985 Flights for Regular Customers Categories Codeforces Codeforces Round #319 (Div. 1) 8
986 Turtles Categories Codeforces Codeforces Round #202 (Div. 1) 8
987 Mishka and Divisors Categories Codeforces Codeforces Round #365 (Div. 2) 8
988 Progress Monitoring Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 8
989 IT Restaurants Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 8
990 Inversions problem Categories Codeforces Rockethon 2015 8
991 Find a car Categories Codeforces Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) 8
992 Game with Strings Categories Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 8
993 Vanya and Balloons Categories Codeforces Codeforces Round #355 (Div. 2) 8
994 World of Darkraft - 2 Categories Codeforces Codeforces Round #265 (Div. 1) 8
995 Antichain Categories Codeforces Codeforces Round #205 (Div. 2) 8
996 New Year Garland Categories Codeforces Codeforces Round #100 8
997 Don't fear, DravDe is kind Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
998 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
999 Vowels Categories Codeforces Codeforces Round #225 (Div. 1) 8
1000 Positions in Permutations Categories Codeforces Codeforces Round #175 (Div. 2) 8
1001 The Child and Polygon Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 8
1002 Bags and Coins Categories Codeforces Codeforces Round #207 (Div. 1) 8
1003 Tree Categories Codeforces Codeforces Beta Round #23 8
1004 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 8
1005 What Has Dirichlet Got to Do with That? Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
1006 Fractal Detector Categories Codeforces Codeforces Round #141 (Div. 2) 8
1007 Somali Pirates Categories Timus 8
1008 Shaass the Great Categories Codeforces Codeforces Round #178 (Div. 2) 8
1009 Triangles Categories Codeforces Codeforces Beta Round #13 8
1010 Painting Square Categories Codeforces Codeforces Round #181 (Div. 2) 8
1011 Michael and Charging Stations Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 8
1012 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
1013 Zublicanes and Mumocrates Categories Codeforces Codeforces Round #322 (Div. 2) 8
1014 Mausoleum Categories Codeforces Codeforces Round #Pi (Div. 2) 8
1015 Gosha is hunting Categories Codeforces Codeforces Round #381 (Div. 1) 8
1016 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
1017 Linear Kingdom Races Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
1018 e-Government Categories Codeforces VK Cup 2012 Round 2 8
1019 Sereja and Sets Categories Codeforces Codeforces Round #243 (Div. 1) 8
1020 Castle Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 8
1021 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 8
1022 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
1023 Name Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 8
1024 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
1025 Helping People Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 8
1026 Broken robot Categories Codeforces Codeforces Beta Round #24 8
1027 LCS Again Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 8
1028 An unavoidable detour for home Categories Codeforces Codeforces Round #418 (Div. 2) 8
1029 Tower of Hanoi Categories Codeforces Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) 8
1030 2048 Categories Codeforces Coder-Strike 2014 - Round 2 8
1031 Wilbur and Trees Categories Codeforces Codeforces Round #331 (Div. 2) 8
1032 Ostap and Tree Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 8
1033 Fibonacci army Categories Codeforces Unknown Language Round #2 8
1034 Alex and Complicated Task Categories Codeforces Codeforces Round #267 (Div. 2) 8
1035 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
1036 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
1037 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 8
1038 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
1039 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
1040 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 8
1041 Fibonacci Sums Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 8
1042 Numbers Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 8
1043 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
1044 Maxim and Increasing Subsequence Categories Codeforces Codeforces Round #160 (Div. 1) 8
1045 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
1046 Bear and Floodlight Categories Codeforces Codeforces Round #226 (Div. 2) 8
1047 Multicolored Marbles Categories Codeforces VK Cup 2012 Finals, Practice Session 8
1048 Subarray Cuts Categories Codeforces Rockethon 2015 9
1049 Polycarp's Masterpiece Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 9
1050 Bear and Cavalry Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
1051 Singer House Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 9
1052 Half-decay tree Categories Codeforces Codeforces Beta Round #62 9
1053 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
1054 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
1055 StackingBoxes Categories TopCoder SRM 261 - Div1 hard] (7995) 9
1056 Colorful Stones Categories Codeforces Codeforces Round #162 (Div. 1) 9
1057 DFS Categories Codeforces Lyft Level 5 Challenge 2018 - Final Round 9
1058 Binary Key Categories Codeforces Codeforces Round #193 (Div. 2) 9
1059 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
1060 Quick Tortoise Categories Codeforces Codeforces Round #144 (Div. 1) 9
1061 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
1062 Two Subsequences Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
1063 Power Defence Categories Codeforces Codeforces Round #115 9
1064 Transferring Pyramid Categories Codeforces Codeforces Round #206 (Div. 1) 9
1065 Maxim and Calculator Categories Codeforces Codeforces Round #160 (Div. 1) 9
1066 Superhero's Job Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 9
1067 Cowboys Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
1068 Flags Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1069 Red and Black Tree Categories Codeforces Codeforces Round #221 (Div. 1) 9
1070 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
1071 Writing a Song Categories Codeforces Codeforces Beta Round #50 9
1072 Gerald and Path Categories Codeforces Codeforces Round #313 (Div. 1) 9
1073 Roadside Trees Categories Codeforces Codeforces Round #162 (Div. 1) 9
1074 Tachibana Kanade's Tofu Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 9
1075 And Yet Another Bracket Sequence Categories Codeforces VK Cup 2015 - Round 1 9
1076 Berland Federalization Categories Codeforces Testing Round #10 9
1077 Maximum Longest Increasing Subsequence Categories CodeChef 9
1078 New Year Shopping Categories Codeforces Good Bye 2014 9
1079 Ksenia and Combinatorics Categories Codeforces Codeforces Round #224 (Div. 2) 9
1080 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 9
1081 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
1082 A Museum Robbery Categories Codeforces Codeforces Round #333 (Div. 1) 9
1083 Moon Craters Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
1084 Rhombus Categories Codeforces Codeforces Round #161 (Div. 2) 9
1085 Simplified Nonogram Categories Codeforces Codeforces Round #298 (Div. 2) 9
1086 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 9
1087 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1088 Maze Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
1089 Transforming Sequence Categories Codeforces AIM Tech Round (Div. 1) 9
1090 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1091 Game with Points Categories Codeforces Testing Round #9 9
1092 Lostborn Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1093 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
1094 Information Reform Categories Codeforces Codeforces Beta Round #64 9
1095 Four Divisors Categories Codeforces Educational Codeforces Round 12 9
1096 Maximum Waterfall Categories Codeforces Codeforces Round #165 (Div. 1) 9
1097 Wall Bars Categories Codeforces Codeforces Round #164 (Div. 2) 9
1098 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 9
1099 Rectangles and Square Categories Codeforces MemSQL start[c]up Round 2 - online version 9
1100 Unambiguous Arithmetic Expression Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
1101 Valera and Number Categories Codeforces Codeforces Round #252 (Div. 2) 9
1102 Ciel and Flipboard Categories Codeforces Codeforces Round #190 (Div. 1) 9
1103 Research Rover Categories Codeforces Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) 9
1104 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
1105 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
1106 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
1107 Hanger Categories Codeforces Codeforces Beta Round #68 9
1108 Pasha and Pipe Categories Codeforces Codeforces Round #293 (Div. 2) 9
1109 Largest Submatrix 3 Categories Codeforces Codeforces Round #239 (Div. 1) 9
1110 Sequence of Balls Categories Codeforces Manthan 2011 9
1111 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 9
1112 Lesson Timetable Categories Codeforces Codeforces Beta Round #37 9
1113 Google Code Jam Categories Codeforces Codeforces Round #170 (Div. 1) 9
1114 Black Widow Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 9
1115 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
1116 Random Function and Tree Categories Codeforces Codeforces Round #275 (Div. 1) 9
1117 Little Pony and Elements of Harmony Categories Codeforces Codeforces Round #259 (Div. 1) 9
1118 Pilgrims Categories Codeforces Codeforces Round #202 (Div. 1) 9
1119 Tavas in Kansas Categories Codeforces Codeforces Round #299 (Div. 1) 9
1120 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1121 Candy Store Categories Live Archive 2012 North America - Southeast USA 9
1122 Pudding Monsters Categories Codeforces Zepto Code Rush 2014 9
1123 Representative Sampling Categories Codeforces ABBYY Cup 2.0 - Hard 9
1124 Road to Home Categories Codeforces Codeforces Round #374 (Div. 2) 9
1125 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1126 Fox And Travelling Categories Codeforces Codeforces Round #290 (Div. 1) 9
1127 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
1128 Strange Calculation and Cats Categories Codeforces Codeforces Round #329 (Div. 2) 9
1129 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 9
1130 Dima and Figure Categories Codeforces Codeforces Round #167 (Div. 1) 9
1131 Game with Strings Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 9
1132 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
1133 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
1134 Polo the Penguin and Lucky Numbers Categories Codeforces Codeforces Round #177 (Div. 1) 9
1135 Subarray Cuts Categories Codeforces Rockethon 2015 9
1136 Hitchhiking in the Baltic States Categories Codeforces Codeforces Round #415 (Div. 1) 9
1137 Dreamoon and Binary Categories Codeforces Codeforces Round #272 (Div. 1) 9
1138 Xenia and String Problem Categories Codeforces Codeforces Round #207 (Div. 1) 9
1139 Shoe Store Categories Codeforces Codeforces Round #113 (Div. 2) 9
1140 Fibonacci String Subsequences Categories Codeforces Educational Codeforces Round 39 (Rated for Div. 2) 9
1141 Crime Management Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) 9
1142 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1143 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
1144 Triangles Categories Codeforces Codeforces Beta Round #15 9
1145 Yaroslav and Arrangements Categories Codeforces Codeforces Round #182 (Div. 1) 9
1146 Stairs and Lines Categories Codeforces Codeforces Round #284 (Div. 1) 9
1147 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 9
1148 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
1149 Steaks on Board Categories Timus 9
1150 Journey Categories Codeforces Codeforces Beta Round #53 9
1151 Dima and Game Categories Codeforces Codeforces Round #167 (Div. 1) 9
1152 Smart Boy Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 9
1153 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
1154 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
1155 Faryuks Categories Timus 9
1156 Sandy and Nuts Categories Codeforces Codeforces Round #332 (Div. 2) 9
1157 Sereja and Squares Categories Codeforces Codeforces Round #187 (Div. 1) 9
1158 To Hack or not to Hack Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10
1159 Caramel Clouds Categories Codeforces Codeforces Round #426 (Div. 1) 10
1160 Longest Subsequence Categories Live Archive 2004 Asia - Manila 10
1161 Dynamic Programming Categories A2 Online Judge 10
1162 Vasily the Bear and Painting Square Categories Codeforces Codeforces Round #195 (Div. 2) 10
1163 Random Ranking Categories Codeforces Codeforces Round #183 (Div. 1) 10
1164 New Year Cactus Categories Codeforces Good Bye 2013 10
1165 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
1166 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
1167 Galaxy Union Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 10
1168 Longest Increasing Subsequence Categories Codeforces Codeforces Round #315 (Div. 1) 10
1169 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10
1170 Permanent Categories Codeforces Codeforces Round #268 (Div. 1) 10
1171 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
1172 Number of Binominal Coefficients Categories Codeforces Codeforces Round #323 (Div. 1) 10
1173 The Great Marathon Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
1174 Subsequences Return Categories Codeforces Codeforces Round #283 (Div. 1) 10
1175 #dynamic-programming&nbsp;(168)</span> Categories SPOJ 10
1176 Sequence Transformation Categories Codeforces Codeforces Round #172 (Div. 1) 10
1177 Numbers on the blackboard Categories Codeforces Codeforces Round #443 (Div. 1) 10
1178 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
1179 Colored Jenga Categories Codeforces Codeforces Round #242 (Div. 2) 10
1180 Help Shrek and Donkey Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10
1181 Boolean Function Categories Codeforces Codeforces Round #323 (Div. 1) 10
1182 Selling Numbers Categories Codeforces Codeforces Round #402 (Div. 1) 10
1183 Ada and Zoo Categories SPOJ 10
1184 Kyoya and Train Categories Codeforces Codeforces Round #309 (Div. 1) 10
1185 Jzzhu and Squares Categories Codeforces Codeforces Round #257 (Div. 1) 10
1186 Kojiro and Furrari Categories Codeforces Codeforces Round #322 (Div. 2) 10
1187 Mod Mod Mod Categories Codeforces Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3) 10
1188 Forward, march! Categories Codeforces Codeforces Beta Round #11 10
1189 Digits of Number Pi Categories Codeforces Codeforces Round #325 (Div. 1) 10
1190 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
1191 Stock Trading Categories Codeforces Rockethon 2014 10
1192 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
1193 Simba on the Circle Categories Codeforces Educational Codeforces Round 4 10
1194 Inversions problem Categories Codeforces Rockethon 2015 10
1195 Cookie Clicker Categories Codeforces Codeforces Round #222 (Div. 1) 10
1196 Geometry Categories Live Archive 2005 Asia - Kolkata 10
1197 Counting Skyscrapers Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1198 World Evil Categories Codeforces Codeforces Beta Round #58 10
1199 Combining Slimes Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 10
1200 Days of Floral Colours Categories Codeforces Codeforces Round #431 (Div. 1) 10
1201 An easy problem about trees Categories Codeforces MemSQL Start[c]UP 2.0 - Round 2 10
1202 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1203 Banners Categories Codeforces Zepto Code Rush 2014 10
1204 Buy One, Get One Free Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1205 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
1206 School Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
1207 Puzzle Lover Categories Codeforces Codeforces Round #339 (Div. 1) 10
1208 Summer Reading Categories Codeforces Codeforces Round #217 (Div. 2) 10
1209 Sloth Categories Codeforces Codeforces Round #446 (Div. 1) 10
1210 Dynamic Shortest Path Categories Codeforces AIM Tech Round 4 (Div. 1) 10
1211 Dynamic Assignment Problem Categories SPOJ 10
1212 Mutation Categories Codeforces All-Ukrainian School Olympiad in Informatics 10