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Dynamic Programming problems
Problem Name Online Judge Year Contest Difficulty Level
1 Fibonacci Words Categories Live Archive 2012 World Finals - Warsaw 1
2 Binary Lexicographic Sequence Categories Timus 1
3 Treats for the Cows Categories SPOJ 1
4 Aliens at the train Categories SPOJ 1
5 Staircases Categories Timus 1
6 Palindrome 2000 Categories SPOJ 1
7 Fibonacci Freeze Categories UVA 1
8 Vacation Categories UVA 1
9 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
10 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
11 Unidirectional TSP Categories UVA 1
12 Lucky Tickets Categories Timus 1
13 History Grading Categories UVA 1
14 Scuba diver Categories SPOJ 1
15 Tri graphs Categories SPOJ 1
16 Let Me Count The Ways Categories UVA 1
17 Sum of Digits Categories SPOJ 1
18 Sweet and Sour Rock Categories SPOJ 1
19 Magic Grid Categories SPOJ 1
20 THE DRUNK JAILER Categories PKU 1
21 Rectangles Perimeter Categories SPOJ 1
22 Longest Palindrome Categories UVA 1
23 In Danger Categories SPOJ 1
24 K-based Numbers Categories Timus 1
25 Luggage Categories UVA 1
26 Optimal Array Multiplication Sequence Categories UVA 1
27 Adjacent Bit Counts Categories SPOJ 1
28 Maximum Sum Categories UVA 1
29 Piggy-Bank Categories SPOJ 1
30 Non-Decreasing Digits Categories SPOJ 1
31 BLAST Categories SPOJ 1
32 Chop Ahoy! Revisited! Categories SPOJ 1
33 Tiling Up Blocks Categories Live Archive 2003 Asia - Kaohsiung 1
34 Training for final Categories SPOJ 1
35 LATGACH3 Categories SPOJ 1
36 Prime Permutations Categories CodeChef 1
37 Distinct Subsequences Categories UVA 1
38 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
39 Compromise Categories UVA 1
40 Aibohphobia Categories SPOJ 1
41 Maximum Sum Categories Timus 1
42 Longest Common Subsequence Categories UVA 1
43 Grandpa's Walk Categories Live Archive 2012 Asia - Jakarta 1
44 Trip Categories SPOJ 1
45 Fool the Police Categories SPOJ 1
46 Strategic Defense Initiative Categories UVA 1
47 Is Bigger Smarter? Categories UVA 1
48 Railway Tickets Categories Timus 1
49 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
50 Flags Categories Timus 1
51 Ingenuous Cubrency Categories UVA 1
52 The Great Ball Categories SPOJ 1
53 Phidias Categories SPOJ 1
54 Given Length and Sum of Digits... Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
55 Dollars Categories UVA 1
56 Coins Game Categories SPOJ 1
57 Cross-country Categories SPOJ 1
58 Tower of Babylon Categories SPOJ 1
59 Mixtures Categories SPOJ 1
60 0110SS Categories SPOJ 1
61 SuperSale Categories UVA 1
62 Fishmonger Categories SPOJ 1
63 Getting in Line Categories UVA 1
64 Summing to a Square Prime Categories SPOJ 1
65 Square Brackets Categories SPOJ 1
66 Largest Submatrix Categories UVA 1
67 Permutations Categories SPOJ 1
68 The Double HeLiX Categories SPOJ 1
69 Take the Land Categories UVA 1
70 Tile Code Categories Live Archive 2007 Asia - Seoul 1
71 Candy Categories SPOJ 1
72 Pocket Money Categories SPOJ 1
73 Making Change Categories TJU 1
74 The Tower of Babylon Categories UVA 1
75 Hangover Categories PKU 1
76 Wachovia Bank Categories SPOJ 1
77 Square Country Categories Timus 1
78 The Twin Towers Categories UVA 1
79 Help the soldier Categories SPOJ 1
80 Hotels Along the Croatian Coast Categories SPOJ 1
81 Metro Categories Timus 1
82 The 3n + 1 problem Categories UVA 1
83 23 out of 5 Categories UVA 1
84 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
85 Feynman Categories SPOJ 1
86 Dividing coins Categories UVA 1
87 Martian Mining Categories SPOJ 1
88 To the Max Categories PKU 1
89 Easy Longest Increasing Subsequence Categories SPOJ 1
90 Assignments Categories SPOJ 1
91 Save Thy Toys Categories SPOJ 1
92 Homer Simpson Categories UVA 1
93 Edit distance Categories SPOJ 1
94 Bytelandian gold coins Categories SPOJ 1
95 No Change Categories SPOJ 1
96 Party Schedule Categories SPOJ 1
97 Longest Run on a Snowboard Categories UVA 1
98 Tiling a Grid With Dominoes Categories SPOJ 1
99 Roads Categories SPOJ 1
100 Exponentiation Categories PKU 1
101 Sums in a Triangle Categories SPOJ 1
102 Coin Change Categories UVA 1
103 Two Ends Categories SPOJ 1
104 Binary Apple Tree Categories Timus 1
105 Testing the CATCHER Categories UVA 1
106 DNA Sequences Categories SPOJ 1
107 Scientific Conference Categories Timus 1
108 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 1
109 Vertex Cover Categories SPOJ 1
110 Stacking Boxes Categories UVA 1
111 Cutting Sticks Categories UVA 1
112 Membership Management Categories Live Archive 2010 Asia - Tokyo 1
113 Chocolate Categories SPOJ 1
114 The Knapsack Problem Categories SPOJ 1
115 Bee Walk Categories SPOJ 1
116 Alphacode Categories SPOJ 1
117 DIE HARD Categories SPOJ 1
118 Distinct Subsequences Categories SPOJ 1
119 Candy Categories Live Archive 2008 Latin America - South America 1
120 K-based Numbers. Version 2 Categories Timus 1
121 Philosophers Stone Categories SPOJ 1
122 Wedding shopping Categories UVA 1
123 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
124 How do you add? Categories UVA 1
125 Rent your airplane and make money Categories SPOJ 1
126 A+B Problem Categories PKU 1
127 Seinfeld Categories SPOJ 1
128 Divisibility Categories UVA 1
129 Enormous Input Test Categories CodeChef 1
130 Street Categories SPOJ 2
131 Bit Mask Categories UVA 2
132 Diving for Gold Categories UVA 2
133 String to Palindrome Categories UVA 2
134 False Mirrors Categories Timus 2
135 MAXIMUM WOOD CUTTER Categories SPOJ 2
136 Generations of Tribbles Categories Live Archive 2013 North America - Pacific Northwest 2
137 Optimal Binary Search Tree Categories UVA 2
138 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
139 Activities Categories SPOJ 2
140 Temptation Island Categories SPOJ 2
141 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 2
142 XOR Maximization Categories SPOJ 2
143 Sorting is not easy Categories SPOJ 2
144 Another Tree Problem Categories SPOJ 2
145 Flowers Categories Codeforces Codeforces Round #271 (Div. 2) 2
146 Making A Budget Categories SPOJ 2
147 Travelling Salesman Categories UVA 2
148 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 2
149 Blueberries Categories SPOJ 2
150 Partition Categories SPOJ 2
151 The least round way Categories Codeforces Codeforces Beta Round #2 2
152 Robot Instructions Categories UVA 2
153 ACM (ACronymMaker) Categories SPOJ 2
154 Threeprime Numbers Categories Timus 2
155 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 2
156 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 2
157 Game Show Math Categories UVA 2
158 Segments Categories Timus 2
159 Murcia's Skyline Categories UVA 2
160 COSTLY CHESS Categories SPOJ 2
161 Longest Match Categories UVA 2
162 Game of Sum Categories UVA 2
163 The Courier Categories SPOJ 2
164 Pilots Categories SPOJ 2
165 Musketeers Categories SPOJ 2
166 Another Box Problem Categories SPOJ 2
167 Make Palindrome Categories UVA 2
168 Drop the Triples Categories Live Archive 2007 Latin America - South America 2
169 Cow Frisbee Team Categories TJU 2
170 String problem Categories SPOJ 2
171 Again Palindrome Categories UVA 2
172 Tower of Cubes Categories UVA 2
173 Marks Distribution Categories UVA 2
174 Slurpys Categories UVA 2
175 Mysterious Present Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 2
176 I-Keyboard Categories SPOJ 2
177 Physics Practical Categories Codeforces Codeforces Round #154 (Div. 2) 2
178 Beautiful People Categories SGU 2
179 Pearls Categories Live Archive 2002 Europe - Northwestern 2
180 Boxes Categories UVA 2
181 Jugs Categories UVA 2
182 Nudnik Photographer Categories Timus 2
183 Simple Minded Hashing Categories UVA 2
184 Three-coloring of binary trees Categories SPOJ 2
185 Space Elevator Categories PKU 2
186 Divisible Group Sums Categories UVA 2
187 Up Subsequence Categories SPOJ 2
188 Weights and Measures Categories UVA 2
189 Ministry Categories Timus 2
190 Trouble of 13-Dots Categories UVA 2
191 Black-White Grid Categories Live Archive 2006 Asia - Hanoi 2
192 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 2
193 Nested Dolls Categories SPOJ 2
194 Painting the balls Categories SGU 2
195 Interesting number Categories SPOJ 2
196 NERED Categories SPOJ 2
197 Dab of Backpack Categories SPOJ 2
198 Catch Fish Categories SPOJ 2
199 The Bale Tower Categories TJU 2
200 Counting The Way of Bracket Replacement Categories SPOJ 2
201 String Distance and Transform Process Categories UVA 2
202 Always on the run Categories UVA 2
203 Collecting Beepers Categories UVA 2
204 Dice Categories SPOJ 2
205 Con-Junctions Categories SPOJ 2
206 Pebble Solitaire Categories UVA 2
207 Flight Planner Categories UVA 2
208 JEDNAKOST Categories SPOJ 2
209 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
210 Point Connection Game in a Circle Categories SPOJ 2
211 Chopsticks Categories UVA 2
212 Fibo Categories A2 Online Judge 2
213 Queue Categories UVA 2
214 Milliard Vasya's Function Categories Timus 2
215 The Marriage Interview :-) Categories UVA 2
216 Walking on the Safe Side Categories UVA 2
217 Boredom Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 2
218 Black or White Categories SPOJ 2
219 Bicolored Horses Categories Timus 2
220 Equal Sum Sets Categories Live Archive 2013 Asia - Aizu 2
221 Mobile Service Categories SPOJ 2
222 Anniversary Party Categories Timus 2
223 Yoda Goes Palindromic ! Categories SPOJ 2
224 Tiling Categories UVA 2
225 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 2
226 Feline Olympics - Mouseball Categories SPOJ 2
227 Bar Codes Categories UVA 2
228 Decoding Morse Sequences Categories SPOJ 2
229 Building Bridges Categories SPOJ 2
230 Problem 3 Categories SPOJ 2
231 Particular Palindromes Categories SPOJ 2
232 Tourist Categories SPOJ 2
233 Card Sorting Categories SPOJ 2
234 String Computer Categories UVA 2
235 Rain Categories SPOJ 2
236 Little Elephant and Painting Categories CodeChef 2
237 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
238 Sum of Different Primes Categories UVA 3
239 Barcode Categories Codeforces Codeforces Round #139 (Div. 2) 3
240 Brackets Sequence Categories Timus 3
241 Maximum Triangle Area Categories SPOJ 3
242 Free Candies Categories UVA 3
243 Deliver pizza Categories SPOJ 3
244 Even Palindrome Categories SPOJ 3
245 Leaves Categories SPOJ 3
246 Antimatter Ray Clearcutting Categories UVA 3
247 Chop Ahoy! Revisited! Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 3
248 Little Red Riding Hood Categories UVA 3
249 Common Subsequences Categories SPOJ 3
250 Cards, bags and coins Categories CodeChef 3
251 Counting binary strings Categories SPOJ 3
252 Zeta-Nim Game Categories CodeChef 3
253 String Shuffle Categories SPOJ 3
254 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 3
255 Choosing Capital for Treeland Categories Codeforces Codeforces Round #135 (Div. 2) 3
256 Balancing the Stone Categories SPOJ 3
257 Partition the sequence Categories SPOJ 3
258 Traveling by Stagecoach Categories SPOJ 3
259 Budget Travel Categories UVA 3
260 Distance in Tree Categories Codeforces VK Cup 2012 Round 1 3
261 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
262 Bribe the Prisoners Categories SPOJ 3
263 Pleasing Chief Categories CodeChef 3
264 RGBStreet Categories TopCoder SRM 325 - Div2 medium] (10005) 3
265 Mnemonics and Palindromes Categories Timus 3
266 Little Elephant and Movies Categories CodeChef 3
267 Minimal Coverage Categories Timus 3
268 Paid Roads Categories SPOJ 3
269 Pebbles Categories Live Archive 2007 North America - Pacific Northwest & North America - Southern California 3
270 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 3
271 Determine it Categories UVA 3
272 Fast Food Categories UVA 3
273 Polygon Categories SPOJ 3
274 Minus Operation Categories SPOJ 3
275 Esferas Categories SPOJ 3
276 BATMAN3 Categories SPOJ 3
277 String Partition Categories UVA 3
278 I-Keyboard Categories Live Archive 2000 Europe - Central 3
279 Chest of Drawers Categories UVA 3
280 Orchard Trees Categories UVA 3
281 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
282 How Many O's? Categories UVA 3
283 Scheduling Lectures Categories UVA 3
284 Erdos Numbers Categories Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 3
285 Sereja and Game Categories CodeChef 3
286 Sense of Beauty Categories Timus 3
287 Motoboy Categories URI 3
288 The Matrix Game Categories CodeChef 3
289 Slikar Categories SPOJ 3
290 Gentlemen Categories Timus 3
291 Hierarchy Categories Timus 3
292 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
293 Fetching Cooking Tools Categories CodeChef 3
294 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 3
295 Help Bob Categories SPOJ 3
296 Counting K-Rectangle Categories SPOJ 3
297 End up with More Teams Categories UVA 3
298 Fibonacci System Categories Live Archive 2008 Europe - Northeastern 3
299 Menu Categories SPOJ 3
300 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 3
301 Crime Wave - The Sequel Categories UVA 3
302 Hippity Hopscotch Categories UVA 3
303 Candy (Again) Categories SPOJ 3
304 Many Paths, One Destination Categories UVA 3
305 Walking Around Wisely Categories UVA 3
306 Mosaic Categories Live Archive 2009 North America - Southeast USA 3
307 BadNeighbors Categories TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
308 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 3
309 Buns Categories Codeforces Codeforces Beta Round #82 (Div. 2) 3
310 Password Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 3
311 Bag of mice Categories Codeforces Codeforces Round #105 (Div. 2) 3
312 Caesar's Legions Categories Codeforces Codeforces Beta Round #89 (Div. 2) 3
313 Most Servings Meal Categories SPOJ 3
314 Intervals of Monotonicity Categories Timus 3
315 Antimonotonicity Categories UVA 4
316 Little Elephant and Blocks Categories CodeChef 4
317 String reduction Categories SPOJ 4
318 Folding Categories Timus 4
319 Probablistic OR Categories SPOJ 4
320 A Lot of Games Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
321 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
322 Account Book Categories UVA 4
323 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 4
324 Chocolate Categories SPOJ 4
325 Boy Scouts Categories SPOJ 4
326 Matchsticks Categories TJU 4
327 Chocolate Box Categories UVA 4
328 Make Psycho Categories SPOJ 4
329 Term Strategy Categories UVA 4
330 Dominoes Categories SPOJ 4
331 Little Elephant and Interval Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 4
332 Another Assignment Problem Categories SPOJ 4
333 Bright Bracelet Categories Live Archive 2003 North America - Mid-Central USA 4
334 Beautiful Numbers Categories UVA 4
335 Trees Again Categories SPOJ 4
336 Destruction Cannon Categories URI 4
337 Bit by Bit Categories SPOJ 4
338 Raucous Rockers Categories UVA 4
339 Let go to the movies Categories SPOJ 4
340 SMS Categories Timus 4
341 Spiders Categories Codeforces School Regional Team Contest, Saratov, 2011 4
342 Car with powers Categories SPOJ 4
343 Bottle Taps Categories Timus 4
344 Lemon Tale Categories Timus 4
345 Classmates 2 Categories Timus 4
346 Palindromic Subsequence Categories UVA 4
347 Handball Categories UVA 4
348 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
349 Tiling Dominoes Categories UVA 4
350 Malevich Strikes Back! Categories Timus 4
351 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
352 IOI07 Miners Categories SPOJ 4
353 The Secret of an Aerolite Categories SPOJ 4
354 Najkraci Categories SPOJ 4
355 Matches Categories UVA 4
356 Many polygons Categories SPOJ 4
357 Communication Fiend Categories Timus 4
358 Zeros and Ones Categories UVA 4
359 Best Coalitions Categories UVA 4
360 Crack Categories Timus 4
361 Dumb Bones Categories UVA 4
362 Queries for Number of Palindromes Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
363 Train Categories Codeforces Codeforces Beta Round #68 4
364 Mars Canals Categories Timus 4
365 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
366 Fewest Flops Categories UVA 4
367 Substring and Subsequence Categories Codeforces VK Cup 2012 Round 2 4
368 Phone Talks Categories Codeforces VK Cup 2012 Qualification Round 1 4
369 Hackers' Crackdown Categories UVA 4
370 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
371 Drop the Triples Categories SPOJ 4
372 BATMAN1 Categories SPOJ 4
373 AGTC Categories UVA 4
374 Digit Sum Categories UVA 4
375 Who is The Boss Categories SPOJ 4
376 COUNT PAREN Categories SPOJ 4
377 Building Bridges(HARD) Categories SPOJ 4
378 Minion Circle Categories CodeChef 4
379 One-two, One-two 2 Categories Timus 4
380 Paint the Tree Categories CodeChef 5
381 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 5
382 Train Categories Timus 5
383 WordMath Categories TopCoder Unknown () 5
384 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 5
385 Connect Line Segments Categories SPOJ 5
386 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 5
387 Candy Categories UVA 5
388 IPL - CRICKET TOURNAMENT Categories SPOJ 5
389 DNA Laboratory Categories SPOJ 5
390 Basketball Team Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
391 Expect the Expected Categories UVA 5
392 Gasoline Station Categories Timus 5
393 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
394 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
395 Cargo Agency Categories Timus 5
396 Count Digits Categories CodeChef 5
397 Lucky Common Subsequence Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
398 Ship Routes Categories Timus 5
399 Dynasty Puzzles Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
400 Balanced Numbers Categories SPOJ 5
401 Mr. Kitayuta, the Treasure Hunter Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 5
402 Summing Slopes Categories CodeChef 5
403 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
404 Fatawy Categories SPOJ 5
405 Busy Programmer Categories UVA 5
406 Looking for Order Categories Codeforces Codeforces Beta Round #8 5
407 Let's Play Osu! Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 5
408 E-mail Categories Timus 5
409 Two out of Three Categories Codeforces Yandex.Algorithm 2011 Qualification 2 5
410 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
411 Lov-e Pap Pap-e Polti Categories SPOJ 5
412 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
413 Allergy Test Categories UVA 5
414 Sereja and Bubble Sort Categories CodeChef 5
415 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 5
416 BATMAN4 Categories SPOJ 5
417 The Islands Categories UVA 5
418 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
419 Happiness to People! Categories Timus 5
420 Beaver Categories Codeforces Codeforces Beta Round #71 5
421 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 5
422 Subsequence Problem Categories SPOJ 5
423 Coin Changing Again Categories UVA 5
424 CreatureTraining Categories TopCoder TCO08 Round 2 - Div1 medium] (12012) 5
425 Increase Sequence Categories Codeforces Codeforces Round #266 (Div. 2) 5
426 Solitaire Categories Codeforces Codeforces Round #130 (Div. 2) 5
427 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 5
428 INVITATION FOR TECHOFES Categories SPOJ 5
429 Partial Teacher Categories Codeforces Manthan 2011 5
430 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 5
431 Batman Categories UVA 5
432 Convex Polygons Categories SPOJ 5
433 Avoiding Jungle in the Dark Categories UVA 5
434 How many trees? Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 5
435 Optimal Cut Categories UVA 5
436 Paint templates Categories SPOJ 5
437 Huffman´s Greed Categories SPOJ 5
438 The Bridges of Kolsberg Categories UVA 5
439 ICPC Team Strategy Categories UVA 5
440 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 5
441 Roadworks Categories Timus 5
442 Independent Attacking Zones Categories UVA 5
443 MagicNaming Categories TopCoder SRM 526.5 - Div2 hard] (14762) 6
444 Yet Another Assignment Problem Categories SPOJ 6
445 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 6
446 Numbers Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
447 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 6
448 Wizards and Huge Prize Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 6
449 Coloring Brackets Categories Codeforces Codeforces Round #106 (Div. 2) 6
450 The Top-Code Categories SPOJ 6
451 Anniversary Firework Categories Timus 6
452 Fence Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
453 Palindromes Categories Codeforces Codeforces Beta Round #98 (Div. 2) 6
454 Education Reform Categories Codeforces Codeforces Beta Round #90 6
455 Enterprise Categories Timus 6
456 Optical Experiment Categories Codeforces Manthan 2011 6
457 GO FOR DIAMONDS Categories SPOJ 6
458 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
459 Fibonacci Words Categories UVA 6
460 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 6
461 Animals Categories Codeforces Codeforces Beta Round #35 (Div. 2) 6
462 Word Cut Categories Codeforces Croc Champ 2012 - Round 2 6
463 Bracket Sequence Categories SPOJ 6
464 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
465 LCIS Categories Codeforces Codeforces Beta Round #10 6
466 Game --- Mouse and Cheese Categories UVA 6
467 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 6
468 BATMAN2 Categories SPOJ 6
469 Common Palindrome Categories UVA 6
470 LionAge II Categories Codeforces Codeforces Beta Round #66 6
471 Beaver Game Categories Codeforces Codeforces Beta Round #70 (Div. 2) 6
472 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
473 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
474 Right Triangles Categories Codeforces Codeforces Testing Round #1 6
475 JUMPING DORA Categories SPOJ 6
476 Table Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
477 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
478 The Maths Lecture Categories Codeforces Codeforces Round #287 (Div. 2) 6
479 Shooting Gallery Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 6
480 Patches Categories URI 6
481 A Simple Task Categories Codeforces Codeforces Beta Round #11 6
482 Summing Slopes Categories SPOJ 6
483 Checkout Assistant Categories Codeforces Codeforces Beta Round #19 6
484 Incrementing The Integer Categories SPOJ 6
485 Buses Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
486 ACM Diagnostics Categories Timus 6
487 Lucky Numbers Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 6
488 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
489 Sort that Queue Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 6
490 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 6
491 AlgoRace Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
492 Weak Links Categories UVA 6
493 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
494 Fox And Jumping Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 6
495 Sequence Categories Codeforces Codeforces Beta Round #13 6
496 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 6
497 Mystic Craft Categories SPOJ 6
498 Stripe 2 Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
499 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 6
500 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 6
501 Decimation Categories Timus 6
502 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 6
503 Playing War Categories UVA 6
504 Promotion Categories URI 6
505 First Digit Law Categories Codeforces Codeforces Beta Round #50 7
506 Bombing Categories Codeforces Codeforces Beta Round #47 7
507 Component Testing Categories Live Archive 2012 North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA 7
508 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
509 Maximum Sub-sequence Product Categories Live Archive 1996 Europe - Southeastern 7
510 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
511 Table Tennis Categories UVA 7
512 Alternative Solution Categories Timus 7
513 Atomic Car Race Categories UVA 7
514 Fibonacci Sums Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 7
515 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
516 Lunar Code Categories Timus 7
517 Martian Plates Categories Timus 7
518 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
519 Merry-go-round Categories Timus 7
520 Fractal Detector Categories Codeforces Codeforces Round #141 (Div. 2) 7
521 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
522 Colored Tiles Categories UVA 7
523 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
524 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
525 Catch Sheep Categories SPOJ 7
526 Brainwashing Device Categories Timus 7
527 Yet Another Answer Categories Timus 7
528 Martian Army Categories Timus 7
529 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 7
530 One-Based Arithmetic Categories Codeforces Testing Round #10 7
531 Pawn Categories Codeforces Codeforces Beta Round #40 (Div. 2) 7
532 Beautiful numbers Categories Codeforces Codeforces Beta Round #51 7
533 Lost in Space Categories Timus 7
534 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 7
535 Two Longest Paths Categories UVA 7
536 TheProgrammingContestDivOne Categories TopCoder SRM 502 - Div1 medium] (14431) 7
537 Join Categories Timus 7
538 Eating High Categories Timus 7
539 Anfisa the Monkey Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
540 Dot Categories Codeforces Codeforces Beta Round #63 (Div. 2) 7
541 Eleven Categories UVA 7
542 Cats Transport Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
543 Name Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
544 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
545 Plants vs. Zombies HD SP Categories UVA 7
546 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 7
547 Salary for Robots Categories Timus 7
548 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
549 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
550 Brainfuck Categories Timus 7
551 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 8
552 Sequence of Balls Categories Codeforces Manthan 2011 8
553 Oil Skimming Categories A2 Online Judge 8
554 Phone Number Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 8
555 Smart Boy Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 8
556 Bath Queue Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
557 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
558 Fibonacci army Categories Codeforces Unknown Language Round #2 8
559 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
560 Genetic engineering Categories Codeforces Yandex.Algorithm 2011 Round 2 8
561 Multicolored Marbles Categories Codeforces VK Cup 2012 Finals, Practice Session 8
562 What Has Dirichlet Got to Do with That? Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
563 Yekaterinburg Subway Categories Timus 8
564 Writing a Song Categories Codeforces Codeforces Beta Round #50 8
565 K-based Numbers. Version 3 Categories Timus 8
566 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
567 Don't fear, DravDe is kind Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
568 Tree Categories Codeforces Codeforces Beta Round #23 8
569 Castle Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 8
570 Lostborn Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 8
571 Lucky Arrays Categories Codeforces Codeforces Round #156 (Div. 1) 8
572 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 8
573 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 8
574 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
575 Broken robot Categories Codeforces Codeforces Beta Round #24 8
576 Beads Categories Codeforces Codeforces Beta Round #8 8
577 Inventory Categories UVA 8
578 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 8
579 Numbers Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 8
580 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
581 Tourist Categories Codeforces All-Ukrainian School Olympiad in Informatics 8
582 Linear Kingdom Races Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
583 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
584 Gifts Categories Codeforces Codeforces Round #142 (Div. 1) 8
585 Changing a String Categories Codeforces Codeforces Beta Round #52 (Div. 2) 8
586 2048 Categories Codeforces Coder-Strike 2014 - Round 2 8
587 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
588 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
589 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
590 IT Restaurants Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 8
591 Balance Categories Codeforces Codeforces Beta Round #17 8
592 Frequent Flyer Card Categories Timus 8
593 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 8
594 Archer's Travel Categories Timus 8
595 Password Categories Codeforces Codeforces Beta Round #71 8
596 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 8
597 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
598 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
599 Journey Categories Codeforces Codeforces Beta Round #53 9
600 Information Reform Categories Codeforces Codeforces Beta Round #64 9
601 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
602 Power Defence Categories Codeforces Codeforces Round #115 9
603 Candy Store Categories Live Archive 2012 North America - Southeast USA 9
604 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
605 Somali Pirates Categories Timus 9
606 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
607 Flags Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
608 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
609 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
610 StackingBoxes Categories TopCoder SRM 261 - Div1 hard] (7995) 9
611 Triangles Categories Codeforces Codeforces Beta Round #15 9
612 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
613 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
614 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
615 Unambiguous Arithmetic Expression Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
616 Cowboys Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
617 Half-decay tree Categories Codeforces Codeforces Beta Round #62 9
618 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
619 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
620 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
621 Lesson Timetable Categories Codeforces Codeforces Beta Round #37 9
622 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
623 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
624 Moon Craters Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
625 Shoe Store Categories Codeforces Codeforces Round #113 (Div. 2) 9
626 Crime Management Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) 9
627 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
628 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
629 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 9
630 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
631 Faryuks Categories Timus 9
632 Two Subsequences Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
633 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
634 Hanger Categories Codeforces Codeforces Beta Round #68 9
635 New Year Garland Categories Codeforces Codeforces Round #100 9
636 World Evil Categories Codeforces Codeforces Beta Round #58 10
637 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
638 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 10
639 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
640 Dynamic Assignment Problem Categories SPOJ 10
641 The Great Marathon Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
642 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
643 Help Shrek and Donkey Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10
644 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 10
645 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
646 Mutation Categories Codeforces All-Ukrainian School Olympiad in Informatics 10
647 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
648 Steaks on Board Categories Timus 10
649 Quick Tortoise Categories Codeforces Codeforces Round #144 (Div. 1) 10
650 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
651 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10