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