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