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