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Dynamic Programming problems
Problem Name Online Judge Year Contest Difficulty Level
1 Ingenuous Cubrency Categories UVA 1
2 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
3 Aliens at the train Categories SPOJ 1
4 Dollars Categories UVA 1
5 Oil Skimming Categories A2 Online Judge 1
6 Sum of Digits Categories SPOJ 1
7 Exponentiation Categories PKU 1
8 Easy Longest Increasing Subsequence Categories SPOJ 1
9 Alphacode Categories SPOJ 1
10 Homer Simpson Categories UVA 1
11 Non-Decreasing Digits Categories SPOJ 1
12 Longest Palindrome Categories UVA 1
13 Tiling Up Blocks Categories Live Archive 2003 Asia - Kaohsiung 1
14 Tri graphs Categories SPOJ 1
15 Philosophers Stone Categories SPOJ 1
16 Optimal Array Multiplication Sequence Categories UVA 1
17 Rent your airplane and make money Categories SPOJ 1
18 Compromise Categories UVA 1
19 Feynman Categories SPOJ 1
20 Maximum Sum Categories Timus 1
21 Fibonacci Words Categories Live Archive 2012 World Finals - Warsaw 1
22 Grandpa's Walk Categories Live Archive 2012 Asia - Jakarta 1
23 Strategic Defense Initiative Categories UVA 1
24 Help the soldier Categories SPOJ 1
25 Railway Tickets Categories Timus 1
26 Flags Categories Timus 1
27 Fibonacci Freeze Categories UVA 1
28 Chop Ahoy! Revisited! Categories SPOJ 1
29 LATGACH3 Categories SPOJ 1
30 In Danger Categories SPOJ 1
31 Prime Permutations Categories CodeChef 1
32 Adjacent Bit Counts Categories SPOJ 1
33 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
34 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
35 Dividing coins Categories UVA 1
36 BLAST Categories SPOJ 1
37 Making Change Categories TJU 1
38 Take the Land Categories UVA 1
39 Rectangles Perimeter Categories SPOJ 1
40 K-based Numbers. Version 2 Categories Timus 1
41 Phidias Categories SPOJ 1
42 Tile Code Categories Live Archive 2007 Asia - Seoul 1
43 How do you add? Categories UVA 1
44 0110SS Categories SPOJ 1
45 Piggy-Bank Categories SPOJ 1
46 A+B Problem Categories PKU 1
47 The Twin Towers Categories UVA 1
48 Two Ends Categories SPOJ 1
49 DNA Sequences Categories SPOJ 1
50 Metro Categories Timus 1
51 23 out of 5 Categories UVA 1
52 Vertex Cover Categories SPOJ 1
53 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
54 Longest Common Subsequence Categories UVA 1
55 Sums in a Triangle Categories SPOJ 1
56 Square Country Categories Timus 1
57 Pocket Money Categories SPOJ 1
58 Cross-country Categories SPOJ 1
59 Mixtures Categories SPOJ 1
60 Fishmonger Categories SPOJ 1
61 Square Brackets Categories SPOJ 1
62 The Double HeLiX Categories SPOJ 1
63 Getting in Line Categories UVA 1
64 Chocolate Categories SPOJ 1
65 Largest Submatrix Categories UVA 1
66 Bee Walk Categories SPOJ 1
67 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
68 The Tower of Babylon Categories UVA 1
69 Cutting Sticks Categories UVA 1
70 Training for final Categories SPOJ 1
71 THE DRUNK JAILER Categories PKU 1
72 Coins Game Categories SPOJ 1
73 K-based Numbers Categories Timus 1
74 Tower of Babylon Categories SPOJ 1
75 Luggage Categories UVA 1
76 Summing to a Square Prime Categories SPOJ 1
77 Maximum Sum Categories UVA 1
78 Longest Run on a Snowboard Categories UVA 1
79 Permutations Categories SPOJ 1
80 Palindrome 2000 Categories SPOJ 1
81 Unidirectional TSP Categories UVA 1
82 Coin Change Categories UVA 1
83 Scuba diver Categories SPOJ 1
84 Hotels Along the Croatian Coast Categories SPOJ 1
85 Binary Apple Tree Categories Timus 1
86 The 3n + 1 problem Categories UVA 1
87 Testing the CATCHER Categories UVA 1
88 Scientific Conference Categories Timus 1
89 Stacking Boxes Categories UVA 1
90 Treats for the Cows Categories SPOJ 1
91 Distinct Subsequences Categories UVA 1
92 To the Max Categories PKU 1
93 Edit distance Categories SPOJ 1
94 No Change Categories SPOJ 1
95 Sweet and Sour Rock Categories SPOJ 1
96 Let Me Count The Ways Categories UVA 1
97 Roads Categories SPOJ 1
98 Hangover Categories PKU 1
99 Assignments Categories SPOJ 1
100 SuperSale Categories UVA 1
101 Bytelandian gold coins Categories SPOJ 1
102 DIE HARD Categories SPOJ 1
103 Party Schedule Categories SPOJ 1
104 Candy Categories Live Archive 2008 Latin America - South America 1
105 Tiling a Grid With Dominoes Categories SPOJ 1
106 Binary Lexicographic Sequence Categories Timus 1
107 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 1
108 Is Bigger Smarter? Categories UVA 1
109 Staircases Categories Timus 1
110 Vacation Categories UVA 1
111 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
112 Aibohphobia Categories SPOJ 1
113 Lucky Tickets Categories Timus 1
114 History Grading Categories UVA 1
115 Trip Categories SPOJ 1
116 Fool the Police Categories SPOJ 1
117 Seinfeld Categories SPOJ 1
118 Distinct Subsequences Categories SPOJ 1
119 Divisibility Categories UVA 1
120 Enormous Input Test Categories CodeChef 1
121 Building Bridges Categories SPOJ 2
122 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 2
123 String to Palindrome Categories UVA 2
124 Musketeers Categories SPOJ 2
125 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
126 Robot Instructions Categories UVA 2
127 Another Tree Problem Categories SPOJ 2
128 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 2
129 Decoding Morse Sequences Categories SPOJ 2
130 Making A Budget Categories SPOJ 2
131 Blueberries Categories SPOJ 2
132 Particular Palindromes Categories SPOJ 2
133 Flight Planner Categories UVA 2
134 Segments Categories Timus 2
135 Optimal Binary Search Tree Categories UVA 2
136 Up Subsequence Categories SPOJ 2
137 Queue Categories UVA 2
138 Murcia's Skyline Categories UVA 2
139 Bit Mask Categories UVA 2
140 MAXIMUM WOOD CUTTER Categories SPOJ 2
141 Longest Match Categories UVA 2
142 Three-coloring of binary trees Categories SPOJ 2
143 Game of Sum Categories UVA 2
144 Flowers Categories Codeforces Codeforces Round #271 (Div. 2) 2
145 Milliard Vasya's Function Categories Timus 2
146 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 2
147 Interesting number Categories SPOJ 2
148 Magic Grid Categories SPOJ 2
149 The Courier Categories SPOJ 2
150 Pilots Categories SPOJ 2
151 ACM (ACronymMaker) Categories SPOJ 2
152 Bar Codes Categories UVA 2
153 Make Palindrome Categories UVA 2
154 Another Box Problem Categories SPOJ 2
155 Cow Frisbee Team Categories TJU 2
156 Wedding shopping Categories UVA 2
157 Again Palindrome Categories UVA 2
158 Partition Categories SPOJ 2
159 Drop the Triples Categories Live Archive 2007 Latin America - South America 2
160 Tower of Cubes Categories UVA 2
161 Slurpys Categories UVA 2
162 Nudnik Photographer Categories Timus 2
163 COSTLY CHESS Categories SPOJ 2
164 Simple Minded Hashing Categories UVA 2
165 Divisible Group Sums Categories UVA 2
166 Ministry Categories Timus 2
167 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 2
168 Trouble of 13-Dots Categories UVA 2
169 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 2
170 Black or White Categories SPOJ 2
171 Beautiful People Categories SGU 2
172 Yoda Goes Palindromic ! Categories SPOJ 2
173 Weights and Measures Categories UVA 2
174 Black-White Grid Categories Live Archive 2006 Asia - Hanoi 2
175 Martian Mining Categories SPOJ 2
176 Candy Categories SPOJ 2
177 NERED Categories SPOJ 2
178 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
179 The Bale Tower Categories TJU 2
180 String Distance and Transform Process Categories UVA 2
181 String problem Categories SPOJ 2
182 Nested Dolls Categories SPOJ 2
183 Save Thy Toys Categories SPOJ 2
184 The least round way Categories Codeforces Codeforces Beta Round #2 2
185 Always on the run Categories UVA 2
186 Pebble Solitaire Categories UVA 2
187 I-Keyboard Categories SPOJ 2
188 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 2
189 The Marriage Interview :-) Categories UVA 2
190 Walking on the Safe Side Categories UVA 2
191 Game Show Math Categories UVA 2
192 Bicolored Horses Categories Timus 2
193 Equal Sum Sets Categories Live Archive 2013 Asia - Aizu 2
194 Street Categories SPOJ 2
195 Space Elevator Categories PKU 2
196 Anniversary Party Categories Timus 2
197 JEDNAKOST Categories SPOJ 2
198 Dab of Backpack Categories SPOJ 2
199 Chopsticks Categories UVA 2
200 Dice Categories SPOJ 2
201 Con-Junctions Categories SPOJ 2
202 Collecting Beepers Categories UVA 2
203 Temptation Island Categories SPOJ 2
204 Sorting is not easy Categories SPOJ 2
205 Boredom Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 2
206 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 2
207 Problem 3 Categories SPOJ 2
208 String Computer Categories UVA 2
209 Point Connection Game in a Circle Categories SPOJ 2
210 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 2
211 Counting The Way of Bracket Replacement Categories SPOJ 2
212 Menu Categories SPOJ 2
213 Marks Distribution Categories UVA 2
214 Tiling Categories UVA 2
215 Jugs Categories UVA 2
216 Diving for Gold Categories UVA 2
217 False Mirrors Categories Timus 2
218 Physics Practical Categories Codeforces Codeforces Round #154 (Div. 2) 2
219 Mobile Service Categories SPOJ 2
220 Feline Olympics - Mouseball Categories SPOJ 2
221 Little Elephant and Painting Categories CodeChef 2
222 Tourist Categories SPOJ 2
223 Partition the sequence Categories SPOJ 3
224 Card Sorting Categories SPOJ 3
225 Deliver pizza Categories SPOJ 3
226 Chop Ahoy! Revisited! Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 3
227 Chest of Drawers Categories UVA 3
228 Maximum Triangle Area Categories SPOJ 3
229 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
230 Free Candies Categories UVA 3
231 Antimatter Ray Clearcutting Categories UVA 3
232 Little Red Riding Hood Categories UVA 3
233 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
234 Cards, bags and coins Categories CodeChef 3
235 Barcode Categories Codeforces Codeforces Round #139 (Div. 2) 3
236 Zeta-Nim Game Categories CodeChef 3
237 Sense of Beauty Categories Timus 3
238 Even Palindrome Categories SPOJ 3
239 Leaves Categories SPOJ 3
240 Distance in Tree Categories Codeforces VK Cup 2012 Round 1 3
241 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 3
242 Minus Operation Categories SPOJ 3
243 Esferas Categories SPOJ 3
244 BadNeighbors Categories TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
245 Bribe the Prisoners Categories SPOJ 3
246 Traveling by Stagecoach Categories SPOJ 3
247 Budget Travel Categories UVA 3
248 Minimal Coverage Categories Timus 3
249 Slikar Categories SPOJ 3
250 Pebbles Categories Live Archive 2007 North America - Pacific Northwest & North America - Southern California 3
251 Pearls Categories Live Archive 2002 Europe - Northwestern 3
252 Little Elephant and Movies Categories CodeChef 3
253 Choosing Capital for Treeland Categories Codeforces Codeforces Round #135 (Div. 2) 3
254 Intervals of Monotonicity Categories Timus 3
255 Pleasing Chief Categories CodeChef 3
256 RGBStreet Categories TopCoder SRM 325 - Div2 medium] (10005) 3
257 Caesar's Legions Categories Codeforces Codeforces Beta Round #89 (Div. 2) 3
258 I-Keyboard Categories Live Archive 2000 Europe - Central 3
259 Orchard Trees Categories UVA 3
260 Scheduling Lectures Categories UVA 3
261 How Many O's? Categories UVA 3
262 Buns Categories Codeforces Codeforces Beta Round #82 (Div. 2) 3
263 Fast Food Categories UVA 3
264 String Partition Categories UVA 3
265 Password Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 3
266 Bag of mice Categories Codeforces Codeforces Round #105 (Div. 2) 3
267 Hierarchy Categories Timus 3
268 Determine it Categories UVA 3
269 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 3
270 Gentlemen Categories Timus 3
271 Erdos Numbers Categories Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 3
272 Sereja and Game Categories CodeChef 3
273 Catch Fish Categories SPOJ 3
274 The Matrix Game Categories CodeChef 3
275 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 3
276 Threeprime Numbers Categories Timus 3
277 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
278 Fetching Cooking Tools Categories CodeChef 3
279 Activities Categories SPOJ 3
280 Walking Around Wisely Categories UVA 3
281 Help Bob Categories SPOJ 3
282 Counting K-Rectangle Categories SPOJ 3
283 Mosaic Categories Live Archive 2009 North America - Southeast USA 3
284 Crime Wave - The Sequel Categories UVA 3
285 Hippity Hopscotch Categories UVA 3
286 Mysterious Present Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 3
287 Many Paths, One Destination Categories UVA 3
288 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
289 Sum of Different Primes Categories UVA 3
290 Balancing the Stone Categories SPOJ 3
291 Generations of Tribbles Categories Live Archive 2013 North America - Pacific Northwest 3
292 String Shuffle Categories SPOJ 3
293 Brackets Sequence Categories Timus 3
294 Mnemonics and Palindromes Categories Timus 3
295 Fibonacci System Categories Live Archive 2008 Europe - Northeastern 3
296 Most Servings Meal Categories SPOJ 3
297 Little Elephant and Blocks Categories CodeChef 4
298 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
299 BATMAN1 Categories SPOJ 4
300 Chocolate Box Categories UVA 4
301 Matchsticks Categories TJU 4
302 Candy (Again) Categories SPOJ 4
303 Spiders Categories Codeforces School Regional Team Contest, Saratov, 2011 4
304 Queries for Number of Palindromes Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
305 Bright Bracelet Categories Live Archive 2003 North America - Mid-Central USA 4
306 Palindromic Subsequence Categories UVA 4
307 Paid Roads Categories SPOJ 4
308 Common Subsequences Categories SPOJ 4
309 Term Strategy Categories UVA 4
310 Crack Categories Timus 4
311 The Secret of an Aerolite Categories SPOJ 4
312 Another Assignment Problem Categories SPOJ 4
313 Chocolate Categories SPOJ 4
314 Boy Scouts Categories SPOJ 4
315 Trees Again Categories SPOJ 4
316 Dominoes Categories SPOJ 4
317 Malevich Strikes Back! Categories Timus 4
318 Let go to the movies Categories SPOJ 4
319 Little Elephant and Interval Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 4
320 One-two, One-two 2 Categories Timus 4
321 Hackers' Crackdown Categories UVA 4
322 Raucous Rockers Categories UVA 4
323 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
324 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 4
325 Drop the Triples Categories SPOJ 4
326 Najkraci Categories SPOJ 4
327 Many polygons Categories SPOJ 4
328 BATMAN3 Categories SPOJ 4
329 Polygon Categories SPOJ 4
330 Tiling Dominoes Categories UVA 4
331 Mars Canals Categories Timus 4
332 Antimonotonicity Categories UVA 4
333 String reduction Categories SPOJ 4
334 Best Coalitions Categories UVA 4
335 Dumb Bones Categories UVA 4
336 Substring and Subsequence Categories Codeforces VK Cup 2012 Round 2 4
337 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
338 Phone Talks Categories Codeforces VK Cup 2012 Qualification Round 1 4
339 Communication Fiend Categories Timus 4
340 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
341 Digit Sum Categories UVA 4
342 COUNT PAREN Categories SPOJ 4
343 AGTC Categories UVA 4
344 Train Categories Codeforces Codeforces Beta Round #68 4
345 Folding Categories Timus 4
346 Probablistic OR Categories SPOJ 4
347 SMS Categories Timus 4
348 Building Bridges(HARD) Categories SPOJ 4
349 Who is The Boss Categories SPOJ 4
350 Minion Circle Categories CodeChef 4
351 Bottle Taps Categories Timus 4
352 Lemon Tale Categories Timus 4
353 Paint the Tree Categories CodeChef 5
354 ICPC Team Strategy Categories UVA 5
355 Wizards and Huge Prize Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 5
356 WordMath Categories TopCoder Unknown () 5
357 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
358 Candy Categories UVA 5
359 IPL - CRICKET TOURNAMENT Categories SPOJ 5
360 Allergy Test Categories UVA 5
361 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 5
362 Ship Routes Categories Timus 5
363 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 5
364 Happiness to People! Categories Timus 5
365 Make Psycho Categories SPOJ 5
366 Expect the Expected Categories UVA 5
367 Count Digits Categories CodeChef 5
368 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
369 Bit by Bit Categories SPOJ 5
370 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
371 DNA Laboratory Categories SPOJ 5
372 Busy Programmer Categories UVA 5
373 Independent Attacking Zones Categories UVA 5
374 Coin Changing Again Categories UVA 5
375 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 5
376 Lucky Common Subsequence Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
377 Summing Slopes Categories CodeChef 5
378 Car with powers Categories SPOJ 5
379 Balanced Numbers Categories SPOJ 5
380 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 5
381 Dynasty Puzzles Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
382 Roadworks Categories Timus 5
383 Sereja and Bubble Sort Categories CodeChef 5
384 Handball Categories UVA 5
385 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 5
386 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 5
387 Optimal Cut Categories UVA 5
388 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 5
389 Two out of Three Categories Codeforces Yandex.Algorithm 2011 Qualification 2 5
390 Summing Slopes Categories SPOJ 5
391 Gasoline Station Categories Timus 5
392 Partial Teacher Categories Codeforces Manthan 2011 5
393 Subsequence Problem Categories SPOJ 5
394 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
395 Cargo Agency Categories Timus 5
396 Increase Sequence Categories Codeforces Codeforces Round #266 (Div. 2) 5
397 Connect Line Segments Categories SPOJ 5
398 Zeros and Ones Categories UVA 5
399 BATMAN4 Categories SPOJ 5
400 Fatawy Categories SPOJ 5
401 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
402 The Bridges of Kolsberg Categories UVA 5
403 Basketball Team Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
404 Looking for Order Categories Codeforces Codeforces Beta Round #8 5
405 Batman Categories UVA 5
406 Convex Polygons Categories SPOJ 5
407 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
408 CreatureTraining Categories TopCoder TCO08 Round 2 - Div1 medium] (12012) 5
409 Let's Play Osu! Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 5
410 INVITATION FOR TECHOFES Categories SPOJ 5
411 Beaver Categories Codeforces Codeforces Beta Round #71 5
412 Solitaire Categories Codeforces Codeforces Round #130 (Div. 2) 5
413 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 5
414 Paint templates Categories SPOJ 5
415 Classmates 2 Categories Timus 5
416 Huffmans Greed Categories SPOJ 5
417 E-mail Categories Timus 5
418 Shooting Gallery Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 6
419 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 6
420 A Simple Task Categories Codeforces Codeforces Beta Round #11 6
421 Bracket Sequence Categories SPOJ 6
422 Mouse & a Cheese Categories UVA 6
423 Checkout Assistant Categories Codeforces Codeforces Beta Round #19 6
424 Coloring Brackets Categories Codeforces Codeforces Round #106 (Div. 2) 6
425 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
426 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 6
427 MagicNaming Categories TopCoder SRM 526.5 - Div2 hard] (14762) 6
428 ACM Diagnostics Categories Timus 6
429 The Top-Code Categories SPOJ 6
430 Numbers Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
431 Optical Experiment Categories Codeforces Manthan 2011 6
432 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 6
433 Sequence Categories Codeforces Codeforces Beta Round #13 6
434 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 6
435 Word Cut Categories Codeforces Croc Champ 2012 - Round 2 6
436 How many trees? Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 6
437 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
438 Stripe 2 Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
439 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 6
440 Anniversary Firework Categories Timus 6
441 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
442 Incrementing The Integer Categories SPOJ 6
443 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
444 Common Palindrome Categories UVA 6
445 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 6
446 Fibonacci Words Categories UVA 6
447 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 6
448 GO FOR DIAMONDS Categories SPOJ 6
449 Right Triangles Categories Codeforces Codeforces Testing Round #1 6
450 Pawn Categories Codeforces Codeforces Beta Round #40 (Div. 2) 6
451 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
452 Decimation Categories Timus 6
453 BATMAN2 Categories SPOJ 6
454 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 6
455 The Islands Categories UVA 6
456 Beaver Game Categories Codeforces Codeforces Beta Round #70 (Div. 2) 6
457 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
458 LionAge II Categories Codeforces Codeforces Beta Round #66 6
459 Fence Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
460 JUMPING DORA Categories SPOJ 6
461 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
462 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 6
463 Enterprise Categories Timus 6
464 Table Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
465 LCIS Categories Codeforces Codeforces Beta Round #10 6
466 Animals Categories Codeforces Codeforces Beta Round #35 (Div. 2) 6
467 Mystic Craft Categories SPOJ 6
468 Palindromes Categories Codeforces Codeforces Beta Round #98 (Div. 2) 6
469 Education Reform Categories Codeforces Codeforces Beta Round #90 6
470 Lucky Numbers Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 6
471 Train Categories Timus 6
472 Sort that Queue Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 6
473 Buses Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
474 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 6
475 AlgoRace Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
476 Playing War Categories UVA 6
477 Catch Sheep Categories SPOJ 7
478 Yet Another Assignment Problem Categories SPOJ 7
479 Plants vs. Zombies HD SP Categories UVA 7
480 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 7
481 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
482 Join Categories Timus 7
483 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
484 Eating High Categories Timus 7
485 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
486 Merry-go-round Categories Timus 7
487 Alternative Solution Categories Timus 7
488 Two Longest Paths Categories UVA 7
489 Atomic Car Race Categories UVA 7
490 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
491 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
492 Lost in Space Categories Timus 7
493 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
494 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 7
495 Salary for Robots Categories Timus 7
496 Fractal Detector Categories Codeforces Codeforces Round #141 (Div. 2) 7
497 One-Based Arithmetic Categories Codeforces Testing Round #10 7
498 Brainfuck Categories Timus 7
499 Beautiful numbers Categories Codeforces Codeforces Beta Round #51 7
500 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
501 Yet Another Answer Categories Timus 7
502 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
503 Brainwashing Device Categories Timus 7
504 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 7
505 Lunar Code Categories Timus 7
506 Anfisa the Monkey Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
507 Martian Plates Categories Timus 7
508 Changing a String Categories Codeforces Codeforces Beta Round #52 (Div. 2) 7
509 Dot Categories Codeforces Codeforces Beta Round #63 (Div. 2) 7
510 TheProgrammingContestDivOne Categories TopCoder SRM 502 - Div1 medium] (14431) 7
511 Name Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
512 Table Tennis Categories UVA 7
513 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
514 Weak Links Categories UVA 7
515 Fibonacci Sums Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 7
516 Cats Transport Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
517 Colored Tiles Categories UVA 7
518 Numbers Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 7
519 Eleven Categories UVA 7
520 Bombing Categories Codeforces Codeforces Beta Round #47 7
521 Martian Army Categories Timus 7
522 First Digit Law Categories Codeforces Codeforces Beta Round #50 7
523 Broken robot Categories Codeforces Codeforces Beta Round #24 8
524 Frequent Flyer Card Categories Timus 8
525 Beads Categories Codeforces Codeforces Beta Round #8 8
526 Castle Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 8
527 Yekaterinburg Subway Categories Timus 8
528 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
529 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 8
530 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 8
531 Password Categories Codeforces Codeforces Beta Round #71 8
532 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
533 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 8
534 What Has Dirichlet Got to Do with That? Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
535 Writing a Song Categories Codeforces Codeforces Beta Round #50 8
536 Balance Categories Codeforces Codeforces Beta Round #17 8
537 Linear Kingdom Races Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
538 Crime Management Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) 8
539 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
540 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 8
541 Flags Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 8
542 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
543 Genetic engineering Categories Codeforces Yandex.Algorithm 2011 Round 2 8
544 Fibonacci army Categories Codeforces Unknown Language Round #2 8
545 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 8
546 Multicolored Marbles Categories Codeforces VK Cup 2012 Finals, Practice Session 8
547 Archer's Travel Categories Timus 8
548 Half-decay tree Categories Codeforces Codeforces Beta Round #62 8
549 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
550 Lov-e Pap Pap-e Polti Categories SPOJ 8
551 Bath Queue Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
552 Smart Boy Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 8
553 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
554 Lostborn Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 8
555 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 8
556 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
557 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 8
558 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
559 Don't fear, DravDe is kind Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
560 Inventory Categories UVA 8
561 Tree Categories Codeforces Codeforces Beta Round #23 8
562 2048 Categories Codeforces Coder-Strike 2014 - Round 2 8
563 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
564 Tourist Categories Codeforces All-Ukrainian School Olympiad in Informatics 8
565 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
566 Lucky Arrays Categories Codeforces Codeforces Round #156 (Div. 1) 8
567 Sequence of Balls Categories Codeforces Manthan 2011 8
568 Gifts Categories Codeforces Codeforces Round #142 (Div. 1) 8
569 Phone Number Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 8
570 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
571 IT Restaurants Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 8
572 Power Defence Categories Codeforces Codeforces Round #115 9
573 Faryuks Categories Timus 9
574 Moon Craters Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
575 Lesson Timetable Categories Codeforces Codeforces Beta Round #37 9
576 Unambiguous Arithmetic Expression Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
577 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
578 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
579 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
580 Hanger Categories Codeforces Codeforces Beta Round #68 9
581 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 9
582 Two Subsequences Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
583 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
584 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
585 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
586 Candy Store Categories Live Archive 2012 North America - Southeast USA 9
587 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
588 StackingBoxes Categories TopCoder SRM 261 - Div1 hard] (7995) 9
589 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
590 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
591 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
592 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
593 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
594 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
595 Shoe Store Categories Codeforces Codeforces Round #113 (Div. 2) 9
596 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
597 New Year Garland Categories Codeforces Codeforces Round #100 9
598 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
599 Cowboys Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
600 Somali Pirates Categories Timus 9
601 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
602 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
603 Triangles Categories Codeforces Codeforces Beta Round #15 9
604 Journey Categories Codeforces Codeforces Beta Round #53 9
605 Information Reform Categories Codeforces Codeforces Beta Round #64 9
606 K-based Numbers. Version 3 Categories Timus 10
607 Quick Tortoise Categories Codeforces Codeforces Round #144 (Div. 1) 10
608 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
609 Dynamic Assignment Problem Categories SPOJ 10
610 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
611 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
612 Mutation Categories Codeforces All-Ukrainian School Olympiad in Informatics 10
613 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 10
614 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
615 Help Shrek and Donkey Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10
616 The Great Marathon Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
617 Steaks on Board Categories Timus 10
618 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
619 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 10
620 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
621 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
622 World Evil Categories Codeforces Codeforces Beta Round #58 10