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Dynamic Programming problems
Problem Name Online Judge Year Contest Difficulty Level
1 Optimal Array Multiplication Sequence Categories UVA 1
2 Sum of Digits Categories SPOJ 1
3 Feynman Categories SPOJ 1
4 Exponentiation Categories PKU 1
5 Easy Longest Increasing Subsequence Categories SPOJ 1
6 Help the soldier Categories SPOJ 1
7 Homer Simpson Categories UVA 1
8 Tri graphs Categories SPOJ 1
9 Non-Decreasing Digits Categories SPOJ 1
10 Longest Palindrome Categories UVA 1
11 Tiling Up Blocks Categories Live Archive 2003 Asia - Kaohsiung 1
12 Railway Tickets Categories Timus 1
13 Flags Categories Timus 1
14 Fibonacci Freeze Categories UVA 1
15 Chop Ahoy! Revisited! Categories SPOJ 1
16 LATGACH3 Categories SPOJ 1
17 Compromise Categories UVA 1
18 In Danger Categories SPOJ 1
19 Maximum Sum Categories Timus 1
20 Fibonacci Words Categories Live Archive 2012 World Finals - Warsaw 1
21 Grandpa's Walk Categories Live Archive 2012 Asia - Jakarta 1
22 Adjacent Bit Counts Categories SPOJ 1
23 Strategic Defense Initiative Categories UVA 1
24 Prime Permutations Categories CodeChef 1
25 Dividing coins Categories UVA 1
26 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
27 Magic Grid Categories SPOJ 1
28 Piggy-Bank Categories SPOJ 1
29 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
30 BLAST Categories SPOJ 1
31 Rectangles Perimeter Categories SPOJ 1
32 Two Ends Categories SPOJ 1
33 How do you add? Categories UVA 1
34 0110SS Categories SPOJ 1
35 DNA Sequences Categories SPOJ 1
36 A+B Problem Categories PKU 1
37 Vertex Cover Categories SPOJ 1
38 Phidias Categories SPOJ 1
39 Making Change Categories TJU 1
40 Take the Land Categories UVA 1
41 K-based Numbers. Version 2 Categories Timus 1
42 Tile Code Categories Live Archive 2007 Asia - Seoul 1
43 Sums in a Triangle Categories SPOJ 1
44 Longest Common Subsequence Categories UVA 1
45 The Double HeLiX Categories SPOJ 1
46 Square Country Categories Timus 1
47 Pocket Money Categories SPOJ 1
48 The Twin Towers Categories UVA 1
49 Cross-country Categories SPOJ 1
50 Metro Categories Timus 1
51 Mixtures Categories SPOJ 1
52 23 out of 5 Categories UVA 1
53 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
54 Fishmonger Categories SPOJ 1
55 Square Brackets Categories SPOJ 1
56 Cutting Sticks Categories UVA 1
57 The Great Ball Categories SPOJ 1
58 Chocolate Categories SPOJ 1
59 Bee Walk Categories SPOJ 1
60 Given Length and Sum of Digits... Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
61 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
62 Summing to a Square Prime Categories SPOJ 1
63 The Tower of Babylon Categories UVA 1
64 Permutations Categories SPOJ 1
65 Getting in Line Categories UVA 1
66 Coins Game Categories SPOJ 1
67 Largest Submatrix Categories UVA 1
68 Tower of Babylon Categories SPOJ 1
69 Treats for the Cows Categories SPOJ 1
70 Maximum Sum Categories UVA 1
71 Longest Run on a Snowboard Categories UVA 1
72 Palindrome 2000 Categories SPOJ 1
73 Martian Mining Categories SPOJ 1
74 Unidirectional TSP Categories UVA 1
75 Training for final Categories SPOJ 1
76 Scuba diver Categories SPOJ 1
77 THE DRUNK JAILER Categories PKU 1
78 K-based Numbers Categories Timus 1
79 Luggage Categories UVA 1
80 Binary Apple Tree Categories Timus 1
81 The 3n + 1 problem Categories UVA 1
82 Testing the CATCHER Categories UVA 1
83 Scientific Conference Categories Timus 1
84 Distinct Subsequences Categories UVA 1
85 Stacking Boxes Categories UVA 1
86 Edit distance Categories SPOJ 1
87 Coin Change Categories UVA 1
88 No Change Categories SPOJ 1
89 Hotels Along the Croatian Coast Categories SPOJ 1
90 Let Me Count The Ways Categories UVA 1
91 To the Max Categories PKU 1
92 Sweet and Sour Rock Categories SPOJ 1
93 Party Schedule Categories SPOJ 1
94 Tiling a Grid With Dominoes Categories SPOJ 1
95 Roads Categories SPOJ 1
96 Assignments Categories SPOJ 1
97 Bytelandian gold coins Categories SPOJ 1
98 Trip Categories SPOJ 1
99 DIE HARD Categories SPOJ 1
100 Fool the Police Categories SPOJ 1
101 Candy Categories Live Archive 2008 Latin America - South America 1
102 Is Bigger Smarter? Categories UVA 1
103 Hangover Categories PKU 1
104 SuperSale Categories UVA 1
105 Aibohphobia Categories SPOJ 1
106 Vacation Categories UVA 1
107 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
108 Lucky Tickets Categories Timus 1
109 History Grading Categories UVA 1
110 Seinfeld Categories SPOJ 1
111 Binary Lexicographic Sequence Categories Timus 1
112 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 1
113 Distinct Subsequences Categories SPOJ 1
114 Staircases Categories Timus 1
115 Divisibility Categories UVA 1
116 Enormous Input Test Categories CodeChef 1
117 Ingenuous Cubrency Categories UVA 1
118 Dollars Categories UVA 1
119 Membership Management Categories Live Archive 2010 Asia - Tokyo 1
120 Aliens at the train Categories SPOJ 1
121 Rent your airplane and make money Categories SPOJ 1
122 Alphacode Categories SPOJ 1
123 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
124 Philosophers Stone Categories SPOJ 1
125 Three-coloring of binary trees Categories SPOJ 2
126 Blueberries Categories SPOJ 2
127 Up Subsequence Categories SPOJ 2
128 Flight Planner Categories UVA 2
129 Another Tree Problem Categories SPOJ 2
130 Robot Instructions Categories UVA 2
131 Making A Budget Categories SPOJ 2
132 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 2
133 Bit Mask Categories UVA 2
134 MAXIMUM WOOD CUTTER Categories SPOJ 2
135 Longest Match Categories UVA 2
136 Game of Sum Categories UVA 2
137 Queue Categories UVA 2
138 Segments Categories Timus 2
139 Optimal Binary Search Tree Categories UVA 2
140 Murcia's Skyline Categories UVA 2
141 Milliard Vasya's Function Categories Timus 2
142 XOR Maximization Categories SPOJ 2
143 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 2
144 Interesting number Categories SPOJ 2
145 Flowers Categories Codeforces Codeforces Round #271 (Div. 2) 2
146 Travelling Salesman Categories UVA 2
147 ACM (ACronymMaker) Categories SPOJ 2
148 Partition Categories SPOJ 2
149 Again Palindrome Categories UVA 2
150 Black or White Categories SPOJ 2
151 Drop the Triples Categories Live Archive 2007 Latin America - South America 2
152 Tower of Cubes Categories UVA 2
153 Slurpys Categories UVA 2
154 The Courier Categories SPOJ 2
155 Pilots Categories SPOJ 2
156 Bar Codes Categories UVA 2
157 Another Box Problem Categories SPOJ 2
158 Make Palindrome Categories UVA 2
159 Cow Frisbee Team Categories TJU 2
160 Wedding shopping Categories UVA 2
161 Ministry Categories Timus 2
162 Trouble of 13-Dots Categories UVA 2
163 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 2
164 Nudnik Photographer Categories Timus 2
165 COSTLY CHESS Categories SPOJ 2
166 Simple Minded Hashing Categories UVA 2
167 Divisible Group Sums Categories UVA 2
168 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 2
169 Yoda Goes Palindromic ! Categories SPOJ 2
170 Beautiful People Categories SGU 2
171 Pearls Categories Live Archive 2002 Europe - Northwestern 2
172 Weights and Measures Categories UVA 2
173 Black-White Grid Categories Live Archive 2006 Asia - Hanoi 2
174 I-Keyboard Categories SPOJ 2
175 Candy Categories SPOJ 2
176 String problem Categories SPOJ 2
177 Save Thy Toys Categories SPOJ 2
178 The least round way Categories Codeforces Codeforces Beta Round #2 2
179 Always on the run Categories UVA 2
180 NERED Categories SPOJ 2
181 Pebble Solitaire Categories UVA 2
182 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
183 Orchard Trees Categories UVA 2
184 Nested Dolls Categories SPOJ 2
185 The Bale Tower Categories TJU 2
186 Street Categories SPOJ 2
187 String Distance and Transform Process Categories UVA 2
188 Dice Categories SPOJ 2
189 Con-Junctions Categories SPOJ 2
190 Space Elevator Categories PKU 2
191 Anniversary Party Categories Timus 2
192 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 2
193 JEDNAKOST Categories SPOJ 2
194 Game Show Math Categories UVA 2
195 Dab of Backpack Categories SPOJ 2
196 The Marriage Interview :-) Categories UVA 2
197 Catch Fish Categories SPOJ 2
198 Walking on the Safe Side Categories UVA 2
199 Bicolored Horses Categories Timus 2
200 Equal Sum Sets Categories Live Archive 2013 Asia - Aizu 2
201 Painting the balls Categories SGU 2
202 Chopsticks Categories UVA 2
203 Temptation Island Categories SPOJ 2
204 Threeprime Numbers Categories Timus 2
205 Sorting is not easy Categories SPOJ 2
206 Collecting Beepers Categories UVA 2
207 Point Connection Game in a Circle Categories SPOJ 2
208 Counting The Way of Bracket Replacement Categories SPOJ 2
209 Boredom Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 2
210 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 2
211 Marks Distribution Categories UVA 2
212 Tiling Categories UVA 2
213 Mysterious Present Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 2
214 Problem 3 Categories SPOJ 2
215 String Computer Categories UVA 2
216 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 2
217 Tourist Categories SPOJ 2
218 Mobile Service Categories SPOJ 2
219 Jugs Categories UVA 2
220 Feline Olympics - Mouseball Categories SPOJ 2
221 Diving for Gold Categories UVA 2
222 False Mirrors Categories Timus 2
223 Generations of Tribbles Categories Live Archive 2013 North America - Pacific Northwest 2
224 Physics Practical Categories Codeforces Codeforces Round #154 (Div. 2) 2
225 Musketeers Categories SPOJ 2
226 Little Elephant and Painting Categories CodeChef 2
227 Particular Palindromes Categories SPOJ 2
228 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
229 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 2
230 Building Bridges Categories SPOJ 2
231 Decoding Morse Sequences Categories SPOJ 2
232 String to Palindrome Categories UVA 2
233 Chest of Drawers Categories UVA 3
234 Free Candies Categories UVA 3
235 Paid Roads Categories SPOJ 3
236 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
237 Antimatter Ray Clearcutting Categories UVA 3
238 Little Red Riding Hood Categories UVA 3
239 Deliver pizza Categories SPOJ 3
240 Chop Ahoy! Revisited! Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 3
241 Maximum Triangle Area Categories SPOJ 3
242 Even Palindrome Categories SPOJ 3
243 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
244 Cards, bags and coins Categories CodeChef 3
245 Barcode Categories Codeforces Codeforces Round #139 (Div. 2) 3
246 Minus Operation Categories SPOJ 3
247 Zeta-Nim Game Categories CodeChef 3
248 Esferas Categories SPOJ 3
249 Sense of Beauty Categories Timus 3
250 Distance in Tree Categories Codeforces VK Cup 2012 Round 1 3
251 Leaves Categories SPOJ 3
252 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 3
253 Budget Travel Categories UVA 3
254 Bribe the Prisoners Categories SPOJ 3
255 BadNeighbors Categories TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
256 Slikar Categories SPOJ 3
257 Traveling by Stagecoach Categories SPOJ 3
258 Minimal Coverage Categories Timus 3
259 Pebbles Categories Live Archive 2007 North America - Pacific Northwest & North America - Southern California 3
260 Intervals of Monotonicity Categories Timus 3
261 Pleasing Chief Categories CodeChef 3
262 RGBStreet Categories TopCoder SRM 325 - Div2 medium] (10005) 3
263 Little Elephant and Movies Categories CodeChef 3
264 Choosing Capital for Treeland Categories Codeforces Codeforces Round #135 (Div. 2) 3
265 BATMAN3 Categories SPOJ 3
266 String Partition Categories UVA 3
267 Bag of mice Categories Codeforces Codeforces Round #105 (Div. 2) 3
268 Caesar's Legions Categories Codeforces Codeforces Beta Round #89 (Div. 2) 3
269 I-Keyboard Categories Live Archive 2000 Europe - Central 3
270 Scheduling Lectures Categories UVA 3
271 Buns Categories Codeforces Codeforces Beta Round #82 (Div. 2) 3
272 Fast Food Categories UVA 3
273 How Many O's? Categories UVA 3
274 Password Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 3
275 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 3
276 Gentlemen Categories Timus 3
277 Hierarchy Categories Timus 3
278 Determine it Categories UVA 3
279 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 3
280 Activities Categories SPOJ 3
281 Erdos Numbers Categories Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 3
282 Sereja and Game Categories CodeChef 3
283 The Matrix Game Categories CodeChef 3
284 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
285 Fetching Cooking Tools Categories CodeChef 3
286 Mosaic Categories Live Archive 2009 North America - Southeast USA 3
287 Crime Wave - The Sequel Categories UVA 3
288 Hippity Hopscotch Categories UVA 3
289 Help Bob Categories SPOJ 3
290 Many Paths, One Destination Categories UVA 3
291 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
292 Walking Around Wisely Categories UVA 3
293 Counting K-Rectangle Categories SPOJ 3
294 Balancing the Stone Categories SPOJ 3
295 Menu Categories SPOJ 3
296 String Shuffle Categories SPOJ 3
297 Brackets Sequence Categories Timus 3
298 Sum of Different Primes Categories UVA 3
299 Partition the sequence Categories SPOJ 3
300 End up with More Teams Categories UVA 3
301 Mnemonics and Palindromes Categories Timus 3
302 Fibonacci System Categories Live Archive 2008 Europe - Northeastern 3
303 Most Servings Meal Categories SPOJ 3
304 Card Sorting Categories SPOJ 3
305 Matchsticks Categories TJU 4
306 Spiders Categories Codeforces School Regional Team Contest, Saratov, 2011 4
307 Chocolate Box Categories UVA 4
308 Palindromic Subsequence Categories UVA 4
309 Bright Bracelet Categories Live Archive 2003 North America - Mid-Central USA 4
310 Common Subsequences Categories SPOJ 4
311 Queries for Number of Palindromes Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
312 Term Strategy Categories UVA 4
313 The Secret of an Aerolite Categories SPOJ 4
314 Crack Categories Timus 4
315 Account Book Categories UVA 4
316 Make Psycho Categories SPOJ 4
317 Another Assignment Problem Categories SPOJ 4
318 Chocolate Categories SPOJ 4
319 Boy Scouts Categories SPOJ 4
320 Bit by Bit Categories SPOJ 4
321 Malevich Strikes Back! Categories Timus 4
322 Let go to the movies Categories SPOJ 4
323 Dominoes Categories SPOJ 4
324 Destruction Cannon Categories URI 4
325 Hackers' Crackdown Categories UVA 4
326 Little Elephant and Interval Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 4
327 One-two, One-two 2 Categories Timus 4
328 Drop the Triples Categories SPOJ 4
329 Beautiful Numbers Categories UVA 4
330 Handball Categories UVA 4
331 Raucous Rockers Categories UVA 4
332 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
333 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 4
334 Polygon Categories SPOJ 4
335 Najkraci Categories SPOJ 4
336 Many polygons Categories SPOJ 4
337 Antimonotonicity Categories UVA 4
338 String reduction Categories SPOJ 4
339 Tiling Dominoes Categories UVA 4
340 Mars Canals Categories Timus 4
341 Best Coalitions Categories UVA 4
342 Dumb Bones Categories UVA 4
343 Matches Categories UVA 4
344 IOI07 Miners Categories SPOJ 4
345 Substring and Subsequence Categories Codeforces VK Cup 2012 Round 2 4
346 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
347 Phone Talks Categories Codeforces VK Cup 2012 Qualification Round 1 4
348 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
349 Communication Fiend Categories Timus 4
350 Digit Sum Categories UVA 4
351 COUNT PAREN Categories SPOJ 4
352 AGTC Categories UVA 4
353 Who is The Boss Categories SPOJ 4
354 Folding Categories Timus 4
355 Probablistic OR Categories SPOJ 4
356 Train Categories Codeforces Codeforces Beta Round #68 4
357 Lemon Tale Categories Timus 4
358 SMS Categories Timus 4
359 Building Bridges(HARD) Categories SPOJ 4
360 Minion Circle Categories CodeChef 4
361 Fewest Flops Categories UVA 4
362 Bottle Taps Categories Timus 4
363 Candy (Again) Categories SPOJ 4
364 BATMAN1 Categories SPOJ 4
365 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
366 Little Elephant and Blocks Categories CodeChef 4
367 Candy Categories UVA 5
368 IPL - CRICKET TOURNAMENT Categories SPOJ 5
369 Allergy Test Categories UVA 5
370 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
371 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 5
372 Ship Routes Categories Timus 5
373 Expect the Expected Categories UVA 5
374 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 5
375 Happiness to People! Categories Timus 5
376 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
377 DNA Laboratory Categories SPOJ 5
378 Count Digits Categories CodeChef 5
379 Trees Again Categories SPOJ 5
380 Busy Programmer Categories UVA 5
381 Coin Changing Again Categories UVA 5
382 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
383 Lucky Common Subsequence Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
384 Independent Attacking Zones Categories UVA 5
385 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 5
386 Roadworks Categories Timus 5
387 Summing Slopes Categories CodeChef 5
388 Car with powers Categories SPOJ 5
389 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 5
390 Optimal Cut Categories UVA 5
391 Balanced Numbers Categories SPOJ 5
392 Dynasty Puzzles Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
393 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 5
394 Sereja and Bubble Sort Categories CodeChef 5
395 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 5
396 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 5
397 Two out of Three Categories Codeforces Yandex.Algorithm 2011 Qualification 2 5
398 Cargo Agency Categories Timus 5
399 Patches Categories URI 5
400 Partial Teacher Categories Codeforces Manthan 2011 5
401 Connect Line Segments Categories SPOJ 5
402 Gasoline Station Categories Timus 5
403 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
404 Subsequence Problem Categories SPOJ 5
405 Zeros and Ones Categories UVA 5
406 BATMAN4 Categories SPOJ 5
407 Increase Sequence Categories Codeforces Codeforces Round #266 (Div. 2) 5
408 Convex Polygons Categories SPOJ 5
409 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
410 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
411 Fatawy Categories SPOJ 5
412 The Bridges of Kolsberg Categories UVA 5
413 Basketball Team Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
414 Batman Categories UVA 5
415 Looking for Order Categories Codeforces Codeforces Beta Round #8 5
416 Huffmans Greed Categories SPOJ 5
417 Beaver Categories Codeforces Codeforces Beta Round #71 5
418 INVITATION FOR TECHOFES Categories SPOJ 5
419 Train Categories Timus 5
420 Let's Play Osu! Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 5
421 Paint templates Categories SPOJ 5
422 CreatureTraining Categories TopCoder TCO08 Round 2 - Div1 medium] (12012) 5
423 Classmates 2 Categories Timus 5
424 Avoiding Jungle in the Dark Categories UVA 5
425 E-mail Categories Timus 5
426 Solitaire Categories Codeforces Codeforces Round #130 (Div. 2) 5
427 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 5
428 WordMath Categories TopCoder Unknown () 5
429 Paint the Tree Categories CodeChef 5
430 ICPC Team Strategy Categories UVA 5
431 The Top-Code Categories SPOJ 6
432 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 6
433 MagicNaming Categories TopCoder SRM 526.5 - Div2 hard] (14762) 6
434 Incrementing The Integer Categories SPOJ 6
435 Numbers Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
436 Optical Experiment Categories Codeforces Manthan 2011 6
437 ACM Diagnostics Categories Timus 6
438 Stripe 2 Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
439 Anniversary Firework Categories Timus 6
440 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
441 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 6
442 Word Cut Categories Codeforces Croc Champ 2012 - Round 2 6
443 Sequence Categories Codeforces Codeforces Beta Round #13 6
444 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
445 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 6
446 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 6
447 How many trees? Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 6
448 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
449 Common Palindrome Categories UVA 6
450 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 6
451 GO FOR DIAMONDS Categories SPOJ 6
452 Fibonacci Words Categories UVA 6
453 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
454 Right Triangles Categories Codeforces Codeforces Testing Round #1 6
455 Decimation Categories Timus 6
456 BATMAN2 Categories SPOJ 6
457 Lov-e Pap Pap-e Polti Categories SPOJ 6
458 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 6
459 The Islands Categories UVA 6
460 Beaver Game Categories Codeforces Codeforces Beta Round #70 (Div. 2) 6
461 JUMPING DORA Categories SPOJ 6
462 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
463 LionAge II Categories Codeforces Codeforces Beta Round #66 6
464 Fence Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
465 Table Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
466 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
467 Summing Slopes Categories SPOJ 6
468 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 6
469 Enterprise Categories Timus 6
470 Animals Categories Codeforces Codeforces Beta Round #35 (Div. 2) 6
471 LCIS Categories Codeforces Codeforces Beta Round #10 6
472 Education Reform Categories Codeforces Codeforces Beta Round #90 6
473 Mystic Craft Categories SPOJ 6
474 Palindromes Categories Codeforces Codeforces Beta Round #98 (Div. 2) 6
475 Buses Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
476 Lucky Numbers Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 6
477 Sort that Queue Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 6
478 AlgoRace Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
479 Playing War Categories UVA 6
480 Bracket Sequence Categories SPOJ 6
481 Mouse & a Cheese Categories UVA 6
482 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 6
483 Coloring Brackets Categories Codeforces Codeforces Round #106 (Div. 2) 6
484 Checkout Assistant Categories Codeforces Codeforces Beta Round #19 6
485 Yet Another Assignment Problem Categories SPOJ 6
486 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 6
487 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
488 Shooting Gallery Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 6
489 A Simple Task Categories Codeforces Codeforces Beta Round #11 6
490 Wizards and Huge Prize Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 6
491 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 7
492 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
493 Eating High Categories Timus 7
494 Join Categories Timus 7
495 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
496 Two Longest Paths Categories UVA 7
497 Component Testing Categories Live Archive 2012 North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA 7
498 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
499 Merry-go-round Categories Timus 7
500 Alternative Solution Categories Timus 7
501 Atomic Car Race Categories UVA 7
502 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 7
503 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
504 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
505 Lost in Space Categories Timus 7
506 Brainfuck Categories Timus 7
507 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
508 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 7
509 Fractal Detector Categories Codeforces Codeforces Round #141 (Div. 2) 7
510 Salary for Robots Categories Timus 7
511 Pawn Categories Codeforces Codeforces Beta Round #40 (Div. 2) 7
512 One-Based Arithmetic Categories Codeforces Testing Round #10 7
513 Beautiful numbers Categories Codeforces Codeforces Beta Round #51 7
514 Yet Another Answer Categories Timus 7
515 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
516 Brainwashing Device Categories Timus 7
517 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
518 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 7
519 Dot Categories Codeforces Codeforces Beta Round #63 (Div. 2) 7
520 Martian Plates Categories Timus 7
521 Anfisa the Monkey Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
522 Table Tennis Categories UVA 7
523 Lunar Code Categories Timus 7
524 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
525 Weak Links Categories UVA 7
526 Name Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
527 TheProgrammingContestDivOne Categories TopCoder SRM 502 - Div1 medium] (14431) 7
528 Colored Tiles Categories UVA 7
529 Fibonacci Sums Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 7
530 Eleven Categories UVA 7
531 Cats Transport Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
532 First Digit Law Categories Codeforces Codeforces Beta Round #50 7
533 Bombing Categories Codeforces Codeforces Beta Round #47 7
534 Catch Sheep Categories SPOJ 7
535 Martian Army Categories Timus 7
536 Plants vs. Zombies HD SP Categories UVA 7
537 Beads Categories Codeforces Codeforces Beta Round #8 8
538 Castle Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 8
539 Password Categories Codeforces Codeforces Beta Round #71 8
540 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
541 Yekaterinburg Subway Categories Timus 8
542 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 8
543 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 8
544 Writing a Song Categories Codeforces Codeforces Beta Round #50 8
545 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
546 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 8
547 What Has Dirichlet Got to Do with That? Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
548 Balance Categories Codeforces Codeforces Beta Round #17 8
549 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
550 Linear Kingdom Races Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
551 Crime Management Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) 8
552 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 8
553 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 8
554 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
555 Genetic engineering Categories Codeforces Yandex.Algorithm 2011 Round 2 8
556 Fibonacci army Categories Codeforces Unknown Language Round #2 8
557 Multicolored Marbles Categories Codeforces VK Cup 2012 Finals, Practice Session 8
558 Archer's Travel Categories Timus 8
559 Smart Boy Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 8
560 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
561 Bath Queue Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
562 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
563 Lostborn Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 8
564 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 8
565 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
566 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
567 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 8
568 Changing a String Categories Codeforces Codeforces Beta Round #52 (Div. 2) 8
569 Don't fear, DravDe is kind Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
570 Inventory Categories UVA 8
571 Tree Categories Codeforces Codeforces Beta Round #23 8
572 2048 Categories Codeforces Coder-Strike 2014 - Round 2 8
573 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
574 Tourist Categories Codeforces All-Ukrainian School Olympiad in Informatics 8
575 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
576 Lucky Arrays Categories Codeforces Codeforces Round #156 (Div. 1) 8
577 Numbers Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 8
578 IT Restaurants Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 8
579 Sequence of Balls Categories Codeforces Manthan 2011 8
580 Gifts Categories Codeforces Codeforces Round #142 (Div. 1) 8
581 Phone Number Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 8
582 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
583 Frequent Flyer Card Categories Timus 8
584 Oil Skimming Categories A2 Online Judge 8
585 Broken robot Categories Codeforces Codeforces Beta Round #24 8
586 Unambiguous Arithmetic Expression Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
587 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
588 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
589 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
590 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
591 Hanger Categories Codeforces Codeforces Beta Round #68 9
592 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 9
593 Two Subsequences Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
594 K-based Numbers. Version 3 Categories Timus 9
595 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
596 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
597 StackingBoxes Categories TopCoder SRM 261 - Div1 hard] (7995) 9
598 Candy Store Categories Live Archive 2012 North America - Southeast USA 9
599 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
600 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
601 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
602 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
603 Flags Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
604 Half-decay tree Categories Codeforces Codeforces Beta Round #62 9
605 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
606 Shoe Store Categories Codeforces Codeforces Round #113 (Div. 2) 9
607 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
608 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
609 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
610 New Year Garland Categories Codeforces Codeforces Round #100 9
611 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
612 Cowboys Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
613 Somali Pirates Categories Timus 9
614 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
615 Triangles Categories Codeforces Codeforces Beta Round #15 9
616 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
617 Information Reform Categories Codeforces Codeforces Beta Round #64 9
618 Journey Categories Codeforces Codeforces Beta Round #53 9
619 Lesson Timetable Categories Codeforces Codeforces Beta Round #37 9
620 Power Defence Categories Codeforces Codeforces Round #115 9
621 Faryuks Categories Timus 9
622 Moon Craters Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
623 Quick Tortoise Categories Codeforces Codeforces Round #144 (Div. 1) 10
624 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
625 Dynamic Assignment Problem Categories SPOJ 10
626 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
627 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
628 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
629 Help Shrek and Donkey Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10
630 Mutation Categories Codeforces All-Ukrainian School Olympiad in Informatics 10
631 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 10
632 The Great Marathon Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
633 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
634 Steaks on Board Categories Timus 10
635 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
636 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 10
637 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
638 World Evil Categories Codeforces Codeforces Beta Round #58 10