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Dynamic Programming problems
Problem Name Online Judge Year Contest Difficulty Level
1 Buying Apples! Categories SPOJ 1
2 XOR Maximization Categories SPOJ 1
3 BerSU Ball Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
4 COSTLY CHESS Categories SPOJ 1
5 The Double HeLiX Categories SPOJ 1
6 Training for final Categories SPOJ 1
7 Trip Categories SPOJ 1
8 Two Substrings Categories Codeforces Codeforces Round #306 (Div. 2) 1
9 Dividing coins Categories UVA 1
10 Building Bridges Categories SPOJ 1
11 Pilots Categories SPOJ 1
12 Tiling a Grid With Dominoes Categories Live Archive 2007 North America - Greater NY 1
13 MAXIMUM WOOD CUTTER Categories SPOJ 1
14 Summing to a Square Prime Categories SPOJ 1
15 QAQ Categories Codeforces Codeforces Round #447 (Div. 2) 1
16 Rectangles Perimeter Categories SPOJ 1
17 Fool the Police Categories SPOJ 1
18 Compromise Categories UVA 1
19 Exponentiation Categories PKU 1
20 Piggy-Bank Categories SPOJ 1
21 Tile Code Categories Live Archive 2007 Asia - Seoul 1
22 Coin Change Categories UVA 1
23 Trip Planning Categories Live Archive 2008 Asia - Taipei 1
24 Milliard Vasya's Function Categories Timus 1
25 DIE HARD Categories SPOJ 1
26 Pearls Categories Live Archive 2002 Europe - Northwestern 1
27 LATGACH3 Categories SPOJ 1
28 K-based Numbers. Version 2 Categories Timus 1
29 Edit distance Categories SPOJ 1
30 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
31 Puzzles Categories Codeforces Codeforces Round #196 (Div. 2) 1
32 Help the soldier Categories SPOJ 1
33 Boredom Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 1
34 Prime Permutations Categories CodeChef 1
35 To the Max Categories PKU 1
36 Is Bigger Smarter? Categories UVA 1
37 Assignments Categories SPOJ 1
38 Longest Palindrome Categories UVA 1
39 I Can Guess the Data Structure! Categories UVA 1
40 Magic Grid Categories SPOJ 1
41 Trees Categories Live Archive 2004 South Pacific 1
42 Collecting Beepers Categories UVA 1
43 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
44 Sereja and Suffixes Categories Codeforces Codeforces Round #215 (Div. 2) 1
45 Non-Decreasing Digits Categories SPOJ 1
46 Cleaning Robot Categories SPOJ 1
47 Testing the CATCHER Categories UVA 1
48 Twin Primes Categories UVA 1
49 Pebble Solitaire Categories UVA 1
50 Seinfeld Categories SPOJ 1
51 Grandpa's Walk Categories Live Archive 2012 Asia - Jakarta 1
52 Homer Simpson Categories UVA 1
53 DNA Sequences Categories SPOJ 1
54 Prime Digital Roots Categories Live Archive 2001 South Pacific 1
55 Longest Common Substring Categories SPOJ 1
56 The Great Ball Categories SPOJ 1
57 Binary Search Tree Categories Live Archive 2010 Asia - Daejeon 1
58 Fibonacci Words Categories Live Archive 2012 World Finals - Warsaw 1
59 Maximum Sum Categories Timus 1
60 Ilya and Queries Categories Codeforces Codeforces Round #186 (Div. 2) 1
61 Longest Common Subsequence Categories UVA 1
62 Bytelandian gold coins Categories SPOJ 1
63 Optimal Array Multiplication Sequence Categories UVA 1
64 Cutting Sticks Categories UVA 1
65 Perfection Categories UVA 1
66 Watermelon Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
67 Coins Game Categories SPOJ 1
68 The Twin Towers Categories UVA 1
69 A+B Problem Categories PKU 1
70 Diving for Gold Categories UVA 1
71 Blueberries Categories SPOJ 1
72 Let Me Count The Ways Categories UVA 1
73 The Knapsack Problem Categories SPOJ 1
74 Pocket Money Categories SPOJ 1
75 K-based Numbers Categories Timus 1
76 Distinct Subsequences Categories SPOJ 1
77 Mashmokh and ACM Categories Codeforces Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) 1
78 Number of Ways Categories Codeforces Codeforces Round #266 (Div. 2) 1
79 Alphacode Categories SPOJ 1
80 Fence Categories Codeforces Codeforces Round #211 (Div. 2) 1
81 The jackpot Categories UVA 1
82 Bicoloring Categories UVA 1
83 The Tower of Babylon Categories UVA 1
84 Square Country Categories Timus 1
85 Chocolate Categories SPOJ 1
86 Take the Land Categories UVA 1
87 Divisibility Categories UVA 1
88 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
89 Jill Rides Again Categories UVA 1
90 Tiling a Grid With Dominoes Categories SPOJ 1
91 Forming Quiz Teams Categories UVA 1
92 Chop Ahoy! Revisited! Categories SPOJ 1
93 23 out of 5 Categories UVA 1
94 Bar Codes Categories UVA 1
95 Candy Categories SPOJ 1
96 Vacation Categories UVA 1
97 Mixtures Categories SPOJ 1
98 Binary Apple Tree Categories Timus 1
99 Game of Sum Categories UVA 1
100 Flight Planner Categories UVA 1
101 Sums in a Triangle Categories SPOJ 1
102 Aliens at the train Categories SPOJ 1
103 Histogram Categories SPOJ 1
104 Maximum sum on a torus Categories UVA 1
105 Given Length and Sum of Digits... Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
106 Metro Categories Timus 1
107 The 3n + 1 problem Categories UVA 1
108 Membership Management Categories Live Archive 2010 Asia - Tokyo 1
109 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
110 Philosophers Stone Categories SPOJ 1
111 Chat room Categories Codeforces Codeforces Beta Round #54 (Div. 2) 1
112 Black or White Categories SPOJ 1
113 Stacking Boxes Categories UVA 1
114 Murcia's Skyline Categories UVA 1
115 Bee Walk Categories SPOJ 1
116 Dollars Categories UVA 1
117 In Danger Categories SPOJ 1
118 Wedding shopping Categories UVA 1
119 Scuba diver Categories SPOJ 1
120 History Grading Categories UVA 1
121 Permutations Categories SPOJ 1
122 ACM (ACronymMaker) Categories SPOJ 1
123 Dreamoon and WiFi Categories Codeforces Codeforces Round #272 (Div. 2) 1
124 Divisibility by Eight Categories Codeforces Codeforces Round #306 (Div. 2) 1
125 Square Brackets Categories SPOJ 1
126 Flowers Categories Codeforces Codeforces Round #271 (Div. 2) 1
127 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
128 ShorterSuperSum Categories TopCoder SRM 467 - Div2 easy] (14151) 1
129 Two Ends Categories SPOJ 1
130 Kuriyama Mirai's Stones Categories Codeforces Codeforces Round #248 (Div. 2) 1
131 Largest Submatrix Categories UVA 1
132 Making Change Categories TJU 1
133 Cormen --- The Best Friend Of a Man Categories Codeforces Codeforces Round #377 (Div. 2) 1
134 Joysticks Categories Codeforces Codeforces Round #345 (Div. 2) 1
135 DZY Loves Chessboard Categories Codeforces Codeforces Round #254 (Div. 2) 1
136 Walking on the Safe Side Categories UVA 1
137 THE DRUNK JAILER Categories PKU 1
138 Roads Categories SPOJ 1
139 Strategic Defense Initiative Categories UVA 1
140 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
141 Staircases Categories Timus 1
142 Flipping Game Categories Codeforces Codeforces Round #191 (Div. 2) 1
143 Fibonacci Freeze Categories UVA 1
144 Adjacent Bit Counts Categories SPOJ 1
145 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 1
146 How do you add? Categories UVA 1
147 Bridging signals Categories Live Archive 2003 Europe - Northwestern 1
148 Phidias Categories SPOJ 1
149 Sums in a Triangle Categories CodeChef 1
150 Vertex Cover Categories SPOJ 1
151 Prime Path Categories Live Archive 2006 Europe - Northwestern 1
152 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 1
153 Flags Categories Timus 1
154 Sum of Digits Categories SPOJ 1
155 Party Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 1
156 Can you answer these queries I Categories SPOJ 1
157 Cross-country Categories SPOJ 1
158 Equal Sum Sets Categories Live Archive 2013 Asia - Aizu 1
159 Luggage Categories UVA 1
160 Candy Categories Live Archive 2008 Latin America - South America 1
161 Longest Match Categories UVA 1
162 Martian Mining Categories SPOJ 1
163 Positive or Negative Categories A2 Online Judge 1
164 Robot Instructions Categories UVA 1
165 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
166 Princess Farida Categories SPOJ 1
167 Party Schedule Categories SPOJ 1
168 Easy Longest Increasing Subsequence Categories SPOJ 1
169 Simple Math Categories A2 Online Judge 1
170 Quasi Binary Categories Codeforces Codeforces Round #300 1
171 No Change Categories SPOJ 1
172 Lucky Tickets Categories Timus 1
173 Drazil and Factorial Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 1
174 ABC Path Categories SPOJ 1
175 Treats for the Cows Categories SPOJ 1
176 Hotels Along the Croatian Coast Categories SPOJ 1
177 0110SS Categories SPOJ 1
178 Longest Run on a Snowboard Categories UVA 1
179 Ingenuous Cubrency Categories UVA 1
180 String to Palindrome Categories UVA 1
181 New Year and Hurry Categories Codeforces Good Bye 2016 1
182 Anton and Danik Categories Codeforces Codeforces Round #379 (Div. 2) 1
183 Palindrome 2000 Categories SPOJ 1
184 Hangover Categories PKU 1
185 Rent your airplane and make money Categories SPOJ 1
186 Tiling Up Blocks Categories Live Archive 2003 Asia - Kaohsiung 1
187 Divisible Group Sums Categories UVA 1
188 Sweet and Sour Rock Categories SPOJ 1
189 Save Thy Toys Categories SPOJ 1
190 Fishmonger Categories SPOJ 1
191 Maximum Sum Categories UVA 1
192 Enormous Input Test Categories CodeChef 1
193 Unidirectional TSP Categories UVA 1
194 Tower of Babylon Categories SPOJ 1
195 Maximum Sub-sequence Product Categories UVA 1
196 Binary Lexicographic Sequence Categories Timus 1
197 Getting in Line Categories UVA 1
198 BLAST Categories SPOJ 1
199 Aibohphobia Categories SPOJ 1
200 Wachovia Bank Categories SPOJ 1
201 Tri graphs Categories SPOJ 1
202 Scientific Conference Categories Timus 1
203 The Bale Tower Categories TJU 1
204 Omar Categories A2 Online Judge 1
205 Feynman Categories SPOJ 1
206 Trouble of 13-Dots Categories UVA 1
207 Activities Categories SPOJ 1
208 Woodcutters Categories Codeforces Codeforces Round #303 (Div. 2) 1
209 Jugs Categories UVA 1
210 Alphacode Categories Live Archive 2004 North America - East Central NA 1
211 Kefa and First Steps Categories Codeforces Codeforces Round #321 (Div. 2) 1
212 Generations of Tribbles Categories Live Archive 2013 North America - Pacific Northwest 1
213 SuperSale Categories UVA 1
214 Ra-One Numbers Categories SPOJ 2
215 Nested Dolls Categories SPOJ 2
216 Railway Tickets Categories Timus 2
217 Land Acquisition Categories SPOJ 2
218 Weights and Measures Categories UVA 2
219 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
220 Nudnik Photographer Categories Timus 2
221 Polo the Penguin and Matrix Categories Codeforces Codeforces Round #177 (Div. 2) 2
222 False Mirrors Categories Timus 2
223 Mr. Kitayuta's Gift Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
224 String Partition Categories UVA 2
225 Musketeers Categories SPOJ 2
226 Rain Categories SPOJ 2
227 Space Elevator Categories PKU 2
228 Marks Distribution Categories UVA 2
229 Counting K-Rectangle Categories SPOJ 2
230 Concert Tour Categories Live Archive 2014 Asia - Bangkok 2
231 Tourist Categories SPOJ 2
232 Segments Categories Timus 2
233 Interesting number Categories SPOJ 2
234 Motoboy Categories URI 2
235 DZY Loves Sequences Categories Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 2
236 Another Box Problem Categories SPOJ 2
237 Brackets Sequence Categories Timus 2
238 Optimal Binary Search Tree Categories UVA 2
239 Pay the Price Categories UVA 2
240 I-Keyboard Categories SPOJ 2
241 Tight Words Categories UVA 2
242 Queue Categories UVA 2
243 Partition Categories SPOJ 2
244 Drop the Triples Categories Live Archive 2007 Latin America - South America 2
245 Kyoya and Colored Balls Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 2
246 Ministry Categories Timus 2
247 Dice Categories SPOJ 2
248 Geometric Progression Categories Codeforces Codeforces Round #Pi (Div. 2) 2
249 Three-coloring of binary trees Categories SPOJ 2
250 Menu Categories SPOJ 2
251 Leaves Categories SPOJ 2
252 NERED Categories SPOJ 2
253 Travelling Salesman Categories UVA 2
254 Triangular N-Queens Problem Categories Live Archive 2006 North America - Greater NY 2
255 Handball Categories UVA 2
256 New Year and Domino Categories Codeforces Good Bye 2015 2
257 Vasya and String Categories Codeforces Codeforces Round #354 (Div. 2) 2
258 Budget Travel Categories UVA 2
259 Chest of Drawers Categories UVA 2
260 Deliver pizza Categories SPOJ 2
261 Sequence Categories Live Archive 2014 Asia - Kuala Lumpur 2
262 Pride Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 2
263 Up Subsequence Categories SPOJ 2
264 Covered Path Categories Codeforces Codeforces Round #298 (Div. 2) 2
265 Make Palindrome Categories UVA 2
266 Destruction Cannon Categories URI 2
267 JEDNAKOST Categories SPOJ 2
268 Fibonacci System Categories Live Archive 2008 Europe - Northeastern 2
269 Problem 3 Categories SPOJ 2
270 Little Red Riding Hood Categories UVA 2
271 Unnatural Conditions Categories Codeforces AIM Tech Round 5 (rated, Div. 1 + Div. 2) 2
272 Dancing Cows Categories SPOJ 2
273 Approximating a Constant Range Categories Codeforces Codeforces Round #333 (Div. 2) 2
274 Counting binary strings Categories SPOJ 2
275 Many Paths, One Destination Categories UVA 2
276 String problem Categories SPOJ 2
277 BATMAN3 Categories SPOJ 2
278 Painting the balls Categories SGU 2
279 Mobile Service Categories SPOJ 2
280 1807 Categories SPOJ 2
281 Making A Budget Categories SPOJ 2
282 Again Palindrome Categories UVA 2
283 Squares Categories UVA 2
284 BATMAN2 Categories SPOJ 2
285 Point Connection Game in a Circle Categories SPOJ 2
286 Bing it Categories Live Archive 2009 Asia - Harbin 2
287 Bit Mask Categories UVA 2
288 Pebbles Categories Live Archive 2007 North America - Pacific Northwest & North America - Southern California 2
289 Password Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 2
290 Always on the run Categories UVA 2
291 The Courier Categories SPOJ 2
292 String Computer Categories UVA 2
293 Timofey and a tree Categories Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 2
294 Modulo Sum Categories Codeforces Codeforces Round #319 (Div. 2) 2
295 Scheduling Lectures Categories UVA 2
296 LUCIFER Number Categories SPOJ 2
297 Anniversary Party Categories Timus 2
298 Journey Categories Codeforces Codeforces Round #428 (Div. 2) 2
299 Slurpys Categories UVA 2
300 Ferry Loading Categories UVA 2
301 Temptation Island Categories SPOJ 2
302 Restoring Password Categories Codeforces Codeforces Beta Round #76 (Div. 2 Only) 2
303 Hard problem Categories Codeforces Codeforces Round #367 (Div. 2) 2
304 Alternative Thinking Categories Codeforces Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) 2
305 Reposts Categories Codeforces VK Cup 2015 - Qualification Round 1 2
306 Distinct Subsequences Categories UVA 2
307 Boxes Categories UVA 2
308 Making Change Categories UVA 2
309 Counting The Way of Bracket Replacement Categories SPOJ 2
310 Threeprime Numbers Categories Timus 2
311 Mosaic Categories Live Archive 2009 North America - Southeast USA 2
312 Beautiful People Categories SGU 2
313 KTV Categories UVA 2
314 Catch Fish Categories SPOJ 2
315 Street Categories SPOJ 2
316 Soldier and Number Game Categories Codeforces Codeforces Round #304 (Div. 2) 2
317 Chopsticks Categories UVA 2
318 Wooden Sticks Categories SPOJ 2
319 Black-White Grid Categories Live Archive 2006 Asia - Hanoi 2
320 Another Longest Increasing Subsequence Problem Categories SPOJ 2
321 String Distance and Transform Process Categories UVA 2
322 Yoda Goes Palindromic ! Categories SPOJ 2
323 Card Sorting Categories SPOJ 2
324 Chop Ahoy! Revisited! Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 2
325 Simple Minded Hashing Categories UVA 2
326 Sorting is not easy Categories SPOJ 2
327 How Many O's? Categories UVA 2
328 Esferas Categories SPOJ 2
329 Cow Frisbee Team Categories TJU 2
330 Balancing the Stone Categories SPOJ 2
331 Square Categories UVA 2
332 Little Elephant and Painting Categories CodeChef 2
333 Tennis Championship Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 2
334 G-One Numbers Categories SPOJ 2
335 A DP Problem Categories Live Archive 2003 Asia - Tehran 2
336 Inna and Choose Options Categories Codeforces Codeforces Round #234 (Div. 2) 2
337 Game of Credit Cards Categories Codeforces Codeforces Round #401 (Div. 2) 2
338 Another Tree Problem Categories SPOJ 2
339 Bicolored Horses Categories Timus 2
340 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
341 Chain Reaction Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 2
342 Photo to Remember Categories Codeforces VK Cup 2015 - Qualification Round 1 2
343 Fibo Categories A2 Online Judge 2
344 Tower of Cubes Categories UVA 2
345 Decoding Morse Sequences Categories SPOJ 2
346 Mr. Kitayuta's Colorful Graph Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
347 Caesar's Legions Categories Codeforces Codeforces Beta Round #89 (Div. 2) 2
348 Sum of Different Primes Categories UVA 2
349 Color the Fence Categories Codeforces Codeforces Round #202 (Div. 2) 2
350 Tiling Categories UVA 2
351 Feline Olympics - Mouseball Categories SPOJ 2
352 String Shuffle Categories SPOJ 2
353 Shopping Categories Live Archive 2014 Asia - Tokyo 2
354 BATMAN1 Categories SPOJ 2
355 Polo the Penguin and Strings Categories Codeforces Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) 2
356 Con-Junctions Categories SPOJ 2
357 Game Show Math Categories UVA 2
358 The Marriage Interview :-) Categories UVA 2
359 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 2
360 Erdos Numbers Categories Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 2
361 Functions again Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 2
362 Particular Palindromes Categories SPOJ 2
363 Dab of Backpack Categories SPOJ 2
364 Ada and Game Categories SPOJ 3
365 Fewest Flops Categories UVA 3
366 Antimonotonicity Categories UVA 3
367 An impassioned circulation of affection Categories Codeforces Codeforces Round #418 (Div. 2) 3
368 Zuma Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 3
369 Permutation Categories Codeforces Codeforces Round #209 (Div. 2) 3
370 Hippity Hopscotch Categories UVA 3
371 Alyona and the Tree Categories Codeforces Codeforces Round #358 (Div. 2) 3
372 Re-Arrange II Categories SPOJ 3
373 Free Candies Categories UVA 3
374 Combo Deal Categories UVA 3
375 Sum of Digits Categories Timus 3
376 Coloring Trees Categories Codeforces Codeforces Round #369 (Div. 2) 3
377 Mike and gcd problem Categories Codeforces Codeforces Round #410 (Div. 2) 3
378 Polygon Categories SPOJ 3
379 Account Book Categories UVA 3
380 Palindromic Subsequence Categories UVA 3
381 Sagheer, the Hausmeister Categories Codeforces Codeforces Round #417 (Div. 2) 3
382 I-Keyboard Categories Live Archive 2000 Europe - Central 3
383 Walking Around Wisely Categories UVA 3
384 Minimal Coverage Categories Timus 3
385 Best Coalitions Categories UVA 3
386 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 3
387 Petya and Java Categories Codeforces Codeforces Beta Round #61 (Div. 2) 3
388 Building Bridges(HARD) Categories SPOJ 3
389 Partition the sequence Categories SPOJ 3
390 Little Elephant and Movies Categories CodeChef 3
391 Kefa and Dishes Categories Codeforces Codeforces Round #321 (Div. 2) 3
392 Raucous Rockers Categories UVA 3
393 Even Palindrome Categories SPOJ 3
394 Tiling Dominoes Categories UVA 3
395 Probablistic OR Categories SPOJ 3
396 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
397 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
398 Most Servings Meal Categories SPOJ 3
399 Journey Categories Codeforces Codeforces Round #374 (Div. 2) 3
400 Gentlemen Categories Timus 3
401 Little Elephant and Interval Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 3
402 Crime Wave - The Sequel Categories UVA 3
403 Shopping Trip Categories UVA 3
404 Paid Roads Categories SPOJ 3
405 Minus Operation Categories SPOJ 3
406 Dynamic LCA Categories SPOJ 3
407 Intervals of Monotonicity Categories Timus 3
408 Hard Process Categories Codeforces Educational Codeforces Round 11 3
409 Slikar Categories SPOJ 3
410 New Skateboard Categories Codeforces Educational Codeforces Round 8 3
411 Pleasing Chief Categories CodeChef 3
412 Greedy Hydra Categories SPOJ 3
413 Expression Again Categories UVA 3
414 Mike and Feet Categories Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 3
415 Save the problem! Categories Codeforces MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists) 3
416 Alyona and Spreadsheet Categories Codeforces Codeforces Round #401 (Div. 2) 3
417 Distance in Tree Categories Codeforces VK Cup 2012 Round 1 3
418 Painting Fence Categories Codeforces Codeforces Round #256 (Div. 2) 3
419 Many polygons Categories SPOJ 3
420 Internet Address Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 3
421 The Debut Album Categories Timus 3
422 Little Girl and Maximum XOR Categories Codeforces Codeforces Round #169 (Div. 2) 3
423 Sereja and Game Categories CodeChef 3
424 Hopeless Coach Categories TJU 3
425 Physics Practical Categories Codeforces Codeforces Round #154 (Div. 2) 3
426 Good Sequences Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 3
427 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 3
428 Bear and Prime Numbers Categories Codeforces Codeforces Round #226 (Div. 2) 3
429 ACM (ACronym Maker) Categories Live Archive 2005 North America - East Central NA 3
430 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
431 Cards Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 3
432 Make Psycho Categories SPOJ 3
433 The Secret of an Aerolite Categories SPOJ 3
434 Help Bob Categories SPOJ 3
435 FOODIE Categories SPOJ 3
436 The least round way Categories Codeforces Codeforces Beta Round #2 3
437 Ilya and Escalator Categories Codeforces Codeforces Round #293 (Div. 2) 3
438 The Bridges of Kolsberg Categories UVA 3
439 Greenhouse Effect Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 3
440 Bribe the Prisoners Categories SPOJ 3
441 Fast Food Categories UVA 3
442 Xenia and Weights Categories Codeforces Codeforces Round #197 (Div. 2) 3
443 Art Union Categories Codeforces Codeforces Round #241 (Div. 2) 3
444 The Matrix Game Categories CodeChef 3
445 Zeros and Ones Categories UVA 3
446 Maximum Triangle Area Categories SPOJ 3
447 Barcode Categories Codeforces Codeforces Round #139 (Div. 2) 3
448 Term Strategy Categories UVA 3
449 Beautiful Numbers Categories UVA 3
450 Lazy Math Instructor Categories Live Archive 2000 Asia - Tehran 3
451 Omar Loves Candies Categories A2 Online Judge 3
452 Candy (Again) Categories SPOJ 3
453 Antimatter Ray Clearcutting Categories UVA 3
454 Orchard Trees Categories UVA 3
455 Hierarchy Categories Timus 3
456 Mahmoud and a Message Categories Codeforces Codeforces Round #396 (Div. 2) 3
457 Writing Code Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 3
458 Car with powers Categories SPOJ 3
459 Matches Categories UVA 3
460 String reduction Categories SPOJ 3
461 Mysterious Present Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 3
462 Working out Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 3
463 Mr. Kitayuta, the Treasure Hunter Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 3
464 Determine it Categories UVA 3
465 Recycling Bottles Categories Codeforces Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) 3
466 Arpa's weak amphitheater and Mehrdad's valuable Hoses Categories Codeforces Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) 3
467 Bubble Sort Graph Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 3
468 Booking System Categories Codeforces Codeforces Round #241 (Div. 2) 3
469 Triangles Categories Live Archive 2014 South Pacific 3
470 Vanya and Scales Categories Codeforces Codeforces Round #308 (Div. 2) 3
471 Traveling by Stagecoach Categories SPOJ 3
472 Common Subsequences Categories SPOJ 3
473 BadNeighbors Categories TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
474 The Vindictive Coach Categories UVA 3
475 Hackers' Crackdown Categories UVA 3
476 IOI07 Miners Categories SPOJ 3
477 Plug-in Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 3
478 Bear and Compressing Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
479 Bear and Blocks Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
480 Ladder Categories Codeforces Codeforces Round #171 (Div. 2) 3
481 Cards, bags and coins Categories CodeChef 3
482 Count Paths Categories A2 Online Judge 3
483 Long Path Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
484 Tour Categories UVA 3
485 Choosing Capital for Treeland Categories Codeforces Codeforces Round #135 (Div. 2) 3
486 Fetching Cooking Tools Categories CodeChef 3
487 Longtail Hedgehog Categories Codeforces Codeforces Round #338 (Div. 2) 3
488 AGTC Categories UVA 3
489 Philip J. Fry Problem Categories UVA 3
490 Greg and Graph Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
491 End up with More Teams Categories UVA 3
492 String Popping Categories UVA 3
493 Sense of Beauty Categories Timus 3
494 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
495 A and B and Interesting Substrings Categories Codeforces Codeforces Round #294 (Div. 2) 3
496 COUNT PAREN Categories SPOJ 3
497 RGBStreet Categories TopCoder SRM 325 - Div2 medium] (10005) 3
498 Simple Strings Categories Codeforces Educational Codeforces Round 12 3
499 Robbers' watch Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 3
500 Zeta-Nim Game Categories CodeChef 3
501 Mnemonics and Palindromes Categories Timus 3
502 Drazil and Tiles Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
503 Atomic Car Race Categories UVA 4
504 Bad Luck Island Categories Codeforces Codeforces Round #301 (Div. 2) 4
505 Free Parentheses Categories UVA 4
506 Dima and Salad Categories Codeforces Codeforces Round #214 (Div. 2) 4
507 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
508 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 4
509 Rent your airplane and make money Categories Live Archive 2003 Europe - Southwestern 4
510 Generate a String Categories Codeforces Educational Codeforces Round 16 4
511 Buns Categories Codeforces Codeforces Beta Round #82 (Div. 2) 4
512 Chocolate Box Categories UVA 4
513 Gerald and Giant Chess Categories Codeforces Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) 4
514 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
515 Civilization Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
516 Namit In Trouble Categories SPOJ 4
517 A and B and Lecture Rooms Categories Codeforces Codeforces Round #294 (Div. 2) 4
518 Bag of mice Categories Codeforces Codeforces Round #105 (Div. 2) 4
519 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 4
520 Fox And Jumping Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
521 New Year and Fireworks Categories Codeforces Good Bye 2016 4
522 Crack Categories Timus 4
523 Zero Tree Categories Codeforces Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) 4
524 Vladik and Memorable Trip Categories Codeforces Codeforces Round #416 (Div. 2) 4
525 Fire Again Categories Codeforces Codeforces Beta Round #35 (Div. 2) 4
526 Number of Paths in the Empire Categories SGU 4
527 Cookies Categories Codeforces Codeforces Beta Round #64 4
528 DIVSEQ Categories SPOJ 4
529 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 4
530 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
531 The Islands Categories UVA 4
532 Dumb Bones Categories UVA 4
533 Bright Bracelet Categories Live Archive 2003 North America - Mid-Central USA 4
534 Book of Evil Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 4
535 Busy Programmer Categories UVA 4
536 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 4
537 Little Elephant and Blocks Categories CodeChef 4
538 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 4
539 Round Table Knights Categories Codeforces Codeforces Beta Round #65 (Div. 2) 4
540 Weak Links Categories UVA 4
541 Going Postal Categories Live Archive 2014 South Pacific 4
542 Convex Polygons Categories SPOJ 4
543 The Child and Zoo Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 4
544 Another Assignment Problem Categories SPOJ 4
545 Prefixes and Suffixes Categories Codeforces Codeforces Round #246 (Div. 2) 4
546 Mars Canals Categories Timus 4
547 The Values You Can Make Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 4
548 Bridge Building Categories UVA 4
549 Riding in a Lift Categories Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 4
550 Python Indentation Categories Codeforces Codeforces Round #455 (Div. 2) 4
551 Chloe and pleasant prizes Categories Codeforces Codeforces Round #384 (Div. 2) 4
552 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
553 Folding Categories Timus 4
554 Appleman and Tree Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 4
555 Shaass and Bookshelf Categories Codeforces Codeforces Round #178 (Div. 2) 4
556 Matchsticks Categories TJU 4
557 Fire Categories Codeforces Codeforces Round #436 (Div. 2) 4
558 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
559 A Lot of Games Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
560 Divide and conquer Categories CodeChef 4
561 Red-Green Towers Categories Codeforces Codeforces Round #273 (Div. 2) 4
562 Fatawy Categories SPOJ 4
563 Chocolate Categories SPOJ 4
564 Who is The Boss Categories SPOJ 4
565 Reberland Linguistics Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 4
566 Minion Circle Categories CodeChef 4
567 Can U Win? Categories UVA 4
568 Let go to the movies Categories SPOJ 4
569 Jeff and Rounding Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 4
570 Drop the Triples Categories SPOJ 4
571 Arthur and Table Categories Codeforces Codeforces Round #311 (Div. 2) 4
572 Party Categories A2 Online Judge 4
573 Letter Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 4
574 One-two, One-two 2 Categories Timus 4
575 Boy Scouts Categories SPOJ 4
576 Clique Problem Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 4
577 Maximum Submatrix 2 Categories Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 4
578 BATMAN4 Categories SPOJ 4
579 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
580 Lemon Tale Categories Timus 4
581 Bottle Taps Categories Timus 4
582 Batman Categories UVA 4
583 Cow Program Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
584 Expect the Expected Categories UVA 4
585 Malevich Strikes Back! Categories Timus 4
586 Lov-e Pap Pap-e Polti Categories SPOJ 4
587 Gasoline Station Categories Timus 4
588 Dominoes Categories SPOJ 4
589 ICPC Team Strategy Categories UVA 4
590 Avoiding Jungle in the Dark Categories UVA 4
591 INVITATION FOR TECHOFES Categories SPOJ 4
592 Forming Teams Categories Codeforces Codeforces Round #133 (Div. 2) 4
593 Once Again... Categories Codeforces Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) 4
594 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 4
595 Classmates 2 Categories Timus 4
596 Office Keys Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 4
597 XOR-pyramid Categories Codeforces Codeforces Round #483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!] & Codeforces Round #483 (Div. 2) [Thanks, Botan Investments and Victor Shaburov!] 4
598 Communication Fiend Categories Timus 4
599 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 4
600 Digit Sum Categories UVA 4
601 Queries for Number of Palindromes Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
602 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
603 Najkraci Categories SPOJ 4
604 XOR Equation Categories Codeforces 8VC Venture Cup 2016 - Final Round 4
605 Cái túi ( Hard version ) Categories SPOJ Vietnam 4
606 Balanced Numbers Categories SPOJ 4
607 Fools and Roads Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
608 The Intriguing Obsession Categories Codeforces Codeforces Round #439 (Div. 2) 4
609 Trees Again Categories SPOJ 4
610 Bit by Bit Categories SPOJ 4
611 Optimal Cut Categories UVA 4
612 Ingredients Categories SPOJ 4
613 Pie Rules Categories Codeforces MemSQL Start[c]UP 3.0 - Round 1 4
614 Candy Categories UVA 4
615 SMS Categories Timus 4
616 Babaei and Birthday Cake Categories Codeforces Codeforces Round #343 (Div. 2) 4
617 Image Preview Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 4
618 Binary Search Categories Live Archive 2000 Europe - Northeastern 4
619 Roman and Numbers Categories Codeforces Codeforces Round #235 (Div. 2) 5
620 CreatureTraining Categories TopCoder TCO08 Round 2 - Div1 medium] (12012) 5
621 Subsequence Problem Categories SPOJ 5
622 Connect Line Segments Categories SPOJ 5
623 An overnight dance in discotheque Categories Codeforces Codeforces Round #418 (Div. 2) 5
624 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
625 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 5
626 Spiders Categories Codeforces School Regional Team Contest, Saratov, 2011 5
627 Running with Obstacles Categories Codeforces VK Cup 2016 - Qualification Round 1 5
628 Sereja and Bubble Sort Categories CodeChef 5
629 Running Track Categories Codeforces Codeforces Round #338 (Div. 2) 5
630 Correcting Mistakes Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
631 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
632 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
633 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
634 Elimination Categories Codeforces RCC 2014 Warmup (Div. 2) 5
635 The Bakery Categories Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 5
636 Ciel and Duel Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 5
637 Upgrading Array Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 5
638 Connected Components Categories Codeforces Croc Champ 2013 - Round 1 5
639 WordMath Categories TopCoder Unknown () 5
640 Restaurant Categories Codeforces Testing Round #12 5
641 Levko and Array Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 5
642 Checkout Assistant Categories Codeforces Codeforces Beta Round #19 5
643 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
644 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
645 Basketball Team Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
646 Covering Sets Categories CodeChef 5
647 Hotel Categories Live Archive 2005 Asia - Tehran 5
648 Happiness to People! Categories Timus 5
649 Antimatter Categories Codeforces Codeforces Round #225 (Div. 1) 5
650 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
651 Valid Sets Categories Codeforces Codeforces Round #277 (Div. 2) 5
652 Coin Changing Again Categories UVA 5
653 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
654 Promotion Categories URI 5
655 Game --- Mouse and Cheese Categories UVA 5
656 Ship Routes Categories Timus 5
657 GO FOR DIAMONDS Categories SPOJ 5
658 Super M Categories Codeforces Codeforces Round #328 (Div. 2) 5
659 Roadworks Categories Timus 5
660 Independent Attacking Zones Categories UVA 5
661 Inversions problem Categories Codeforces Rockethon 2015 5
662 Anniversary Firework Categories Timus 5
663 Huffman´s Greed Categories SPOJ 5
664 Fibonacci Words Categories UVA 5
665 Allergy Test Categories UVA 5
666 Increase Sequence Categories Codeforces Codeforces Round #266 (Div. 2) 5
667 Sums of Digits Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 5
668 A Simple Task Categories Codeforces Codeforces Beta Round #11 5
669 HexagonalBattlefield Categories TopCoder SRM 449 - Div1 medium] (13903) 5
670 Enterprise Categories Timus 5
671 Bear and Tower of Cubes Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 5
672 Sum Categories Codeforces Codeforces Beta Round #46 (Div. 2) 5
673 Robot Rapping Results Report Categories Codeforces CROC 2016 - Elimination Round 5
674 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
675 Mario Kart Categories A2 Online Judge 5
676 Patches Categories URI 5
677 IPL - CRICKET TOURNAMENT Categories SPOJ 5
678 Train Categories Timus 5
679 JUMPING DORA Categories SPOJ 5
680 Square Subsets Categories Codeforces Codeforces Round #448 (Div. 2) 5
681 Minimization Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 5
682 Choosing Balls Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 5
683 Cargo Agency Categories Timus 5
684 Berzerk Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 5
685 Spy Syndrome 2 Categories Codeforces Manthan, Codefest 16 5
686 Two Paths Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
687 Chocolate Bar Categories Codeforces Educational Codeforces Round 1 5
688 Paint the Tree Categories CodeChef 5
689 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 5
690 Winter is here Categories Codeforces Codeforces Round #428 (Div. 2) 5
691 Vasya and Beautiful Arrays Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 5
692 Sequence Categories Codeforces Codeforces Beta Round #13 5
693 Famil Door and Brackets Categories Codeforces Codeforces Round #343 (Div. 2) 5
694 Longest Increasing Sequence Categories UVA 5
695 Wet Shark and Blocks Categories Codeforces Codeforces Round #341 (Div. 2) 5
696 Pillars Categories Codeforces Codeforces Round #271 (Div. 2) 5
697 Strip Categories Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 5
698 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 5
699 Summing Slopes Categories CodeChef 5
700 Lucky Tree Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 5
701 Substring and Subsequence Categories Codeforces VK Cup 2012 Round 2 5
702 Counting Rectangles is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 5
703 The Unreal Tournament Categories UVA 5
704 DNA Laboratory Categories SPOJ 5
705 Hanoi Factory Categories Codeforces Codeforces Round #401 (Div. 2) 5
706 Dima and Hares Categories Codeforces Codeforces Round #208 (Div. 2) 5
707 Alyona and Strings Categories Codeforces Codeforces Round #358 (Div. 2) 5
708 E-mail Categories Timus 5
709 Jeff and Furik Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 5
710 How many trees? Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 5
711 K-based Numbers. Version 3 Categories Timus 5
712 Obsessive String Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 5
713 Lucky Common Subsequence Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
714 Iahub and Permutations Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 5
715 Count Digits Categories CodeChef 5
716 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
717 Symmetric and Transitive Categories Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 5
718 Dynasty Puzzles Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
719 Array GCD Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 6
720 Demiurges Play Again Categories Codeforces Codeforces Round #300 6
721 Shooting Gallery Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 6
722 Vanya and Brackets Categories Codeforces Codeforces Round #308 (Div. 2) 6
723 Dreamoon and Strings Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 6
724 Paint templates Categories SPOJ 6
725 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
726 Summing Slopes Categories SPOJ 6
727 Watching Fireworks is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
728 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
729 Segment Tree Categories SPOJ 6
730 ???? ?? ?????? - 2 (round version) Categories Codeforces VK Cup 2015 - Round 1 6
731 Eating High Categories Timus 6
732 Vladik and cards Categories Codeforces Codeforces Round #384 (Div. 2) 6
733 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 6
734 Money for Nothing Categories Live Archive 2017 World Finals - Rapid City 6
735 Dynamic Problem Scoring Categories Codeforces VK Cup 2017 - Round 3 6
736 Longest Common Subsequence Categories SPOJ 6
737 Little Elephant and LCM Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
738 Martian Army Categories Timus 6
739 Phone Talks Categories Codeforces VK Cup 2012 Qualification Round 1 6
740 Road Improvement Categories Codeforces Codeforces Round #302 (Div. 1) 6
741 Fedor and Essay Categories Codeforces Codeforces Round #267 (Div. 2) 6
742 Beaver Categories Codeforces Codeforces Beta Round #71 6
743 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
744 Kindergarten Categories Codeforces Codeforces Round #276 (Div. 1) 6
745 EKG Categories Codeforces ABBYY Cup 3.0 6
746 Okabe and El Psy Kongroo Categories Codeforces Codeforces Round #420 (Div. 2) 6
747 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 6
748 Random Task Categories Codeforces Codeforces Round #247 (Div. 2) 6
749 Table Tennis Categories UVA 6
750 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
751 Sonya and Problem Wihtout a Legend Categories Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 6
752 Palindrome Categories Codeforces MemSQL start[c]up Round 2 - online version 6
753 Anfisa the Monkey Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 6
754 Anya and Cubes Categories Codeforces Codeforces Round #297 (Div. 2) 6
755 Arthur and Brackets Categories Codeforces Codeforces Round #288 (Div. 2) 6
756 Mahmoud and a xor trip Categories Codeforces Codeforces Round #396 (Div. 2) 6
757 LCIS Categories Codeforces Codeforces Beta Round #10 6
758 Alternative Solution Categories Timus 6
759 Eleven Categories UVA 6
760 Maxim and Restaurant Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 6
761 Hamiltonian Spanning Tree Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 6
762 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 6
763 The Top-Code Categories SPOJ 6
764 Plants vs. Zombies HD SP Categories UVA 6
765 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 6
766 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 6
767 Pluses everywhere Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
768 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
769 Train Categories Codeforces Codeforces Beta Round #68 6
770 Permutation Sum Categories Codeforces Codeforces Round #175 (Div. 2) 6
771 Maximum Sub-sequence Product Categories Live Archive 1996 Europe - Southeastern 6
772 Unusual Sequences Categories Codeforces Codeforces Round #450 (Div. 2) 6
773 Incrementing The Integer Categories SPOJ 6
774 Partial Teacher Categories Codeforces Manthan 2011 6
775 Pig and Palindromes Categories Codeforces Codeforces Round #316 (Div. 2) 6
776 Array Queries Categories Codeforces Educational Codeforces Round 19 6
777 New Year Domino Categories Codeforces Good Bye 2014 6
778 Decimation Categories Timus 6
779 Cunning Gena Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 6
780 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 6
781 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
782 Special Matrices Categories Codeforces Codeforces Round #277.5 (Div. 2) 6
783 Buses Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
784 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
785 Ilya and Roads Categories Codeforces Codeforces Round #186 (Div. 2) 6
786 Subsequences Categories Codeforces Testing Round #12 6
787 Stripe 2 Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
788 Memory and Scores Categories Codeforces Codeforces Round #370 (Div. 2) 6
789 Match & Catch Categories Codeforces Codeforces Round #244 (Div. 2) 6
790 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
791 Yet Another Number Game Categories Codeforces Codeforces Round #173 (Div. 2) 6
792 Playing War Categories UVA 6
793 Magic Numbers Categories Codeforces Educational Codeforces Round 8 6
794 AlgoRace Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
795 Salary for Robots Categories Timus 6
796 Oil Skimming Categories A2 Online Judge 6
797 Least Common Multiple Categories Live Archive 2014 South Pacific 6
798 New Year Letter Categories Codeforces Good Bye 2013 6
799 Demogorgon Categories URI 6
800 LIS of Sequence Categories Codeforces Codeforces Round #277 (Div. 2) 6
801 Fence Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
802 Coloring Brackets Categories Codeforces Codeforces Round #106 (Div. 2) 6
803 Jzzhu and Numbers Categories Codeforces Codeforces Round #257 (Div. 1) 6
804 Mystic Craft Categories SPOJ 6
805 Looking for Order Categories Codeforces Codeforces Beta Round #8 6
806 Trains and Statistic Categories Codeforces Codeforces Round #353 (Div. 2) 6
807 Beautiful numbers Categories Codeforces Codeforces Beta Round #51 6
808 Palindromes Categories Codeforces Codeforces Beta Round #98 (Div. 2) 6
809 Animals Categories Codeforces Codeforces Beta Round #35 (Div. 2) 6
810 Minesweeper 1D Categories Codeforces Codeforces Round #237 (Div. 2) 6
811 Group Projects Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 6
812 Sereja and Subsequences Categories Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 6
813 Sort that Queue Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 6
814 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
815 Insertion Sort Categories Codeforces Codeforces Round #212 (Div. 2) 6
816 Substitutes in Number Categories Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 6
817 Save the Python Programmers! Categories Live Archive 2010 North America - Pacific Northwest 6
818 Duff in Beach Categories Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 6
819 Solitaire Categories Codeforces Codeforces Round #130 (Div. 2) 6
820 Snakes Categories A2 Online Judge 6
821 Two out of Three Categories Codeforces Yandex.Algorithm 2011 Qualification 2 6
822 Brainwashing Device Categories Timus 6
823 Let's Play Osu! Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 6
824 Numbers Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
825 Table Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
826 Two Strings Categories Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 6
827 MagicNaming Categories TopCoder SRM 526.5 - Div2 hard] (14762) 6
828 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
829 Wizards and Huge Prize Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 6
830 Beaver Game Categories Codeforces Codeforces Beta Round #70 (Div. 2) 6
831 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
832 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
833 Bracket Sequence Categories SPOJ 6
834 ACM Diagnostics Categories Timus 6
835 The Maths Lecture Categories Codeforces Codeforces Round #287 (Div. 2) 6
836 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 6
837 Karen and Supermarket Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
838 Common Palindrome Categories UVA 6
839 Word Cut Categories Codeforces Croc Champ 2012 - Round 2 7
840 Pawn Categories Codeforces Codeforces Beta Round #40 (Div. 2) 7
841 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
842 Game with Powers Categories Codeforces Codeforces Round #188 (Div. 1) 7
843 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
844 Genetic Engineering Categories Codeforces Rockethon 2014 7
845 Fence Divercity Categories Codeforces Codeforces Round #346 (Div. 2) 7
846 Education Reform Categories Codeforces Codeforces Beta Round #90 7
847 Darth Vader and Tree Categories Codeforces Codeforces Round #291 (Div. 2) 7
848 Sereja and Two Sequences Categories Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 7
849 Bulbo Categories Codeforces Bubble Cup 8 - Finals [Online Mirror] 7
850 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 7
851 Nanami's Digital Board Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 7
852 Yet Another Assignment Problem Categories SPOJ 7
853 Kleofáš and the n-thlon Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 7
854 Game Categories Codeforces Codeforces Beta Round #46 (Div. 2) 7
855 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 7
856 Captains Mode Categories Codeforces Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) 7
857 Lucky Number Representation Categories Codeforces Codeforces Round #206 (Div. 1) 7
858 LionAge II Categories Codeforces Codeforces Beta Round #66 7
859 Identify the Number Categories A2 Online Judge 7
860 Top Secret Task Categories Codeforces Codeforces Round #327 (Div. 1) 7
861 Famil Door and Roads Categories Codeforces Codeforces Round #343 (Div. 2) 7
862 First Digit Law Categories Codeforces Codeforces Beta Round #50 7
863 Join Categories Timus 7
864 Product Sum Categories Codeforces Codeforces Round #344 (Div. 2) 7
865 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
866 Hiking Categories Codeforces Codeforces Round #277.5 (Div. 2) 7
867 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
868 Catch Sheep Categories SPOJ 7
869 Colored Tiles Categories UVA 7
870 Pictures with Kittens (hard version) Categories Codeforces Codeforces Round #521 (Div. 3) 7
871 Brainfuck Categories Timus 7
872 Lannister Army Categories SPOJ 7
873 Dot Categories Codeforces Codeforces Beta Round #63 (Div. 2) 7
874 Little Artem and Random Variable Categories Codeforces VK Cup 2016 - Round 2 7
875 Valera and Fools Categories Codeforces Codeforces Round #216 (Div. 2) 7
876 Zip-line Categories Codeforces Codeforces Round #345 (Div. 1) 7
877 Thief in a Shop Categories Codeforces Educational Codeforces Round 9 7
878 Inventory Categories UVA 7
879 Phone Number Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
880 Beautiful Pairs of Numbers Categories Codeforces Codeforces Round #236 (Div. 1) 7
881 FibonacciKnapsack Categories TopCoder SRM 352 - Div1 medium] (10709) 7
882 Transmitting Levels Categories Codeforces ZeptoLab Code Rush 2015 7
883 Levko and Strings Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 7
884 Quest Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
885 Inna and Sequence Categories Codeforces Codeforces Round #220 (Div. 2) 7
886 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
887 Martian Plates Categories Timus 7
888 Devu and Birthday Celebration Categories Codeforces Codeforces Round #251 (Div. 2) 7
889 Binary Table Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 7
890 Maxim and Matrix Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 7
891 Merry-go-round Categories Timus 7
892 Archer's Travel Categories Timus 7
893 On the Bench Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 7
894 Fafa and Ancient Mathematics Categories Codeforces Codeforces Round #465 (Div. 2) 7
895 Plus and xor Categories Codeforces All-Ukrainian School Olympiad in Informatics 7
896 Yaroslav and Two Strings Categories Codeforces Codeforces Round #179 (Div. 2) 7
897 Lucky Numbers Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
898 Cats Transport Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
899 Two Longest Paths Categories UVA 7
900 Lost in Space Categories Timus 7
901 Ralph and Mushrooms Categories Codeforces Codeforces Round #447 (Div. 2) 7
902 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
903 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
904 Treeland Tour Categories Codeforces Codeforces Round #279 (Div. 2) 7
905 Yet Another Answer Categories Timus 7
906 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
907 Ant Man Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
908 Component Testing Categories Live Archive 2012 North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA 7
909 Divisor Tree Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 7
910 Longest Run on a Snowboard Categories Live Archive 2006 Asia - Coimbatore 7
911 Free Market Categories Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 7
912 Intellectual Inquiry Categories Codeforces CROC 2016 - Elimination Round 7
913 Hongcow Buys a Deck of Cards Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
914 Painting The Wall Categories Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 7
915 Right Triangles Categories Codeforces Codeforces Testing Round #1 7
916 Name That Tune Categories Codeforces Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) 7
917 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
918 TheProgrammingContestDivOne Categories TopCoder SRM 502 - Div1 medium] (14431) 7
919 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
920 Duckindromes Categories UVA 7
921 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 7
922 Rent your airplane and make money Categories UVA 7
923 Changing a String Categories Codeforces Codeforces Beta Round #52 (Div. 2) 7
924 Maximum Questions Categories Codeforces Codeforces Round #450 (Div. 2) 7
925 Special Grid Categories Codeforces Codeforces Round #249 (Div. 2) 7
926 Optical Experiment Categories Codeforces Manthan 2011 7
927 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 7
928 Axis Walking Categories Codeforces Codeforces Round #191 (Div. 2) 7
929 Lunar Code Categories Timus 7
930 Ann and Half-Palindrome Categories Codeforces Codeforces Round #311 (Div. 2) 7
931 Remembering Strings Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 7
932 Vladik and chat Categories Codeforces Codeforces Round #390 (Div. 2) 7
933 Guess the Tree Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 7
934 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
935 Segment Sum Categories Codeforces Educational Codeforces Round 53 (Rated for Div. 2) 7
936 Coin Troubles Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 7
937 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
938 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 7
939 Traffic Jams in the Land Categories Codeforces Codeforces Round #284 (Div. 1) 7
940 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 7
941 Numbers Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 8
942 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 8
943 Petya and Coloring Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) 8
944 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 8
945 Jeff and Brackets Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 8
946 The Minimum Number of Variables Categories Codeforces Codeforces Round #171 (Div. 2) 8
947 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
948 Helping People Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 8
949 Preorder Test Categories Codeforces 8VC Venture Cup 2016 - Final Round 8
950 Michael and Charging Stations Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 8
951 Gosha is hunting Categories Codeforces Codeforces Round #381 (Div. 1) 8
952 Broken robot Categories Codeforces Codeforces Beta Round #24 8
953 Cows and Cool Sequences Categories Codeforces Codeforces Round #174 (Div. 1) 8
954 Multicolored Marbles Categories Codeforces VK Cup 2012 Finals, Practice Session 8
955 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 8
956 Turtles Categories Codeforces Codeforces Round #202 (Div. 1) 8
957 Vowels Categories Codeforces Codeforces Round #225 (Div. 1) 8
958 Frequent Flyer Card Categories Timus 8
959 Gifts Categories Codeforces Codeforces Round #142 (Div. 1) 8
960 Tourist Categories Codeforces All-Ukrainian School Olympiad in Informatics 8
961 Genetic engineering Categories Codeforces Yandex.Algorithm 2011 Round 2 8
962 Roads in Yusland Categories Codeforces Codeforces Round #352 (Div. 1) 8
963 e-Government Categories Codeforces VK Cup 2012 Round 2 8
964 Two Melodies Categories Codeforces Educational Codeforces Round 22 8
965 Drazil and Morning Exercise Categories Codeforces Codeforces Round #292 (Div. 1) 8
966 New Year Garland Categories Codeforces Codeforces Round #100 8
967 Antichain Categories Codeforces Codeforces Round #205 (Div. 2) 8
968 Sereja and Sets Categories Codeforces Codeforces Round #243 (Div. 1) 8
969 Lucky Arrays Categories Codeforces Codeforces Round #156 (Div. 1) 8
970 Birthday Categories Codeforces Codeforces Round #282 (Div. 1) 8
971 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
972 Ostap and Tree Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 8
973 Bombing Categories Codeforces Codeforces Beta Round #47 8
974 Flights for Regular Customers Categories Codeforces Codeforces Round #319 (Div. 1) 8
975 Alex and Complicated Task Categories Codeforces Codeforces Round #267 (Div. 2) 8
976 Password Categories Codeforces Codeforces Beta Round #71 8
977 Greg and Caves Categories Codeforces Codeforces Round #179 (Div. 1) 8
978 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
979 Bags and Coins Categories Codeforces Codeforces Round #207 (Div. 1) 8
980 Vanya and Balloons Categories Codeforces Codeforces Round #355 (Div. 2) 8
981 An unavoidable detour for home Categories Codeforces Codeforces Round #418 (Div. 2) 8
982 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 8
983 Name Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 8
984 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
985 The Child and Polygon Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 8
986 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
987 Triangles Categories Codeforces Codeforces Beta Round #13 8
988 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
989 Tower of Hanoi Categories Codeforces Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) 8
990 Bath Queue Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
991 Balance Categories Codeforces Codeforces Beta Round #17 8
992 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
993 Positions in Permutations Categories Codeforces Codeforces Round #175 (Div. 2) 8
994 Painting Square Categories Codeforces Codeforces Round #181 (Div. 2) 8
995 IT Restaurants Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 8
996 2048 Categories Codeforces Coder-Strike 2014 - Round 2 8
997 Zublicanes and Mumocrates Categories Codeforces Codeforces Round #322 (Div. 2) 8
998 Linear Kingdom Races Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
999 Inversions problem Categories Codeforces Rockethon 2015 8
1000 Biathlon Track Categories Codeforces Codeforces Round #242 (Div. 2) 8
1001 Bear and Floodlight Categories Codeforces Codeforces Round #226 (Div. 2) 8
1002 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
1003 Castle Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 8
1004 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
1005 Shaass the Great Categories Codeforces Codeforces Round #178 (Div. 2) 8
1006 Progress Monitoring Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 8
1007 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 8
1008 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
1009 Fibonacci Sums Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 8
1010 Maxim and Increasing Subsequence Categories Codeforces Codeforces Round #160 (Div. 1) 8
1011 Mausoleum Categories Codeforces Codeforces Round #Pi (Div. 2) 8
1012 LCS Again Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 8
1013 Somali Pirates Categories Timus 8
1014 Don't fear, DravDe is kind Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
1015 What Has Dirichlet Got to Do with That? Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
1016 Fractal Detector Categories Codeforces Codeforces Round #141 (Div. 2) 8
1017 Yekaterinburg Subway Categories Timus 8
1018 One-Based Arithmetic Categories Codeforces Testing Round #10 8
1019 Wilbur and Trees Categories Codeforces Codeforces Round #331 (Div. 2) 8
1020 Beads Categories Codeforces Codeforces Beta Round #8 8
1021 Diverse Substrings Categories Codeforces Testing Round #9 8
1022 Game with Strings Categories Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 8
1023 The Chocolate Spree Categories Codeforces Manthan, Codefest 16 8
1024 Find a car Categories Codeforces Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) 8
1025 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
1026 Tree Categories Codeforces Codeforces Beta Round #23 8
1027 World of Darkraft - 2 Categories Codeforces Codeforces Round #265 (Div. 1) 8
1028 Sereja and Intervals Categories Codeforces Codeforces Round #215 (Div. 1) 8
1029 Fibonacci army Categories Codeforces Unknown Language Round #2 8
1030 Xenia and Dominoes Categories Codeforces Codeforces Round #199 (Div. 2) 8
1031 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
1032 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
1033 Mishka and Divisors Categories Codeforces Codeforces Round #365 (Div. 2) 8
1034 Black Widow Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 9
1035 Ksenia and Combinatorics Categories Codeforces Codeforces Round #224 (Div. 2) 9
1036 Steaks on Board Categories Timus 9
1037 Little Pony and Elements of Harmony Categories Codeforces Codeforces Round #259 (Div. 1) 9
1038 Two Subsequences Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
1039 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
1040 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
1041 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 9
1042 Bear and Cavalry Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
1043 Journey Categories Codeforces Codeforces Beta Round #53 9
1044 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
1045 Roadside Trees Categories Codeforces Codeforces Round #162 (Div. 1) 9
1046 Pudding Monsters Categories Codeforces Zepto Code Rush 2014 9
1047 Half-decay tree Categories Codeforces Codeforces Beta Round #62 9
1048 Faryuks Categories Timus 9
1049 Largest Submatrix 3 Categories Codeforces Codeforces Round #239 (Div. 1) 9
1050 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
1051 Game with Points Categories Codeforces Testing Round #9 9
1052 Quick Tortoise Categories Codeforces Codeforces Round #144 (Div. 1) 9
1053 Smart Boy Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 9
1054 Flags Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1055 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
1056 A Museum Robbery Categories Codeforces Codeforces Round #333 (Div. 1) 9
1057 Triangles Categories Codeforces Codeforces Beta Round #15 9
1058 Four Divisors Categories Codeforces Educational Codeforces Round 12 9
1059 Rhombus Categories Codeforces Codeforces Round #161 (Div. 2) 9
1060 Stairs and Lines Categories Codeforces Codeforces Round #284 (Div. 1) 9
1061 Road to Home Categories Codeforces Codeforces Round #374 (Div. 2) 9
1062 Subarray Cuts Categories Codeforces Rockethon 2015 9
1063 Hitchhiking in the Baltic States Categories Codeforces Codeforces Round #415 (Div. 1) 9
1064 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
1065 Dreamoon and Binary Categories Codeforces Codeforces Round #272 (Div. 1) 9
1066 Maze Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
1067 Transforming Sequence Categories Codeforces AIM Tech Round (Div. 1) 9
1068 Superhero's Job Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 9
1069 Wall Bars Categories Codeforces Codeforces Round #164 (Div. 2) 9
1070 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1071 Gerald and Path Categories Codeforces Codeforces Round #313 (Div. 1) 9
1072 Lostborn Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1073 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1074 Cowboys Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
1075 Writing a Song Categories Codeforces Codeforces Beta Round #50 9
1076 Unambiguous Arithmetic Expression Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
1077 Rectangles and Square Categories Codeforces MemSQL start[c]up Round 2 - online version 9
1078 Pilgrims Categories Codeforces Codeforces Round #202 (Div. 1) 9
1079 Singer House Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 9
1080 Ciel and Flipboard Categories Codeforces Codeforces Round #190 (Div. 1) 9
1081 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 9
1082 Representative Sampling Categories Codeforces ABBYY Cup 2.0 - Hard 9
1083 Maximum Longest Increasing Subsequence Categories CodeChef 9
1084 Shoe Store Categories Codeforces Codeforces Round #113 (Div. 2) 9
1085 Game with Strings Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 9
1086 Information Reform Categories Codeforces Codeforces Beta Round #64 9
1087 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 9
1088 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
1089 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1090 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 9
1091 Maximum Waterfall Categories Codeforces Codeforces Round #165 (Div. 1) 9
1092 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
1093 Simplified Nonogram Categories Codeforces Codeforces Round #298 (Div. 2) 9
1094 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
1095 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
1096 Moon Craters Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
1097 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1098 Xenia and String Problem Categories Codeforces Codeforces Round #207 (Div. 1) 9
1099 Hanger Categories Codeforces Codeforces Beta Round #68 9
1100 Strange Calculation and Cats Categories Codeforces Codeforces Round #329 (Div. 2) 9
1101 Sequence of Balls Categories Codeforces Manthan 2011 9
1102 Google Code Jam Categories Codeforces Codeforces Round #170 (Div. 1) 9
1103 New Year Shopping Categories Codeforces Good Bye 2014 9
1104 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 9
1105 Fibonacci String Subsequences Categories Codeforces Educational Codeforces Round 39 (Rated for Div. 2) 9
1106 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
1107 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
1108 Pasha and Pipe Categories Codeforces Codeforces Round #293 (Div. 2) 9
1109 And Yet Another Bracket Sequence Categories Codeforces VK Cup 2015 - Round 1 9
1110 Berland Federalization Categories Codeforces Testing Round #10 9
1111 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 9
1112 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
1113 Dima and Figure Categories Codeforces Codeforces Round #167 (Div. 1) 9
1114 Crime Management Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) 9
1115 Tavas in Kansas Categories Codeforces Codeforces Round #299 (Div. 1) 9
1116 Power Defence Categories Codeforces Codeforces Round #115 9
1117 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
1118 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1119 StackingBoxes Categories TopCoder SRM 261 - Div1 hard] (7995) 9
1120 Polo the Penguin and Lucky Numbers Categories Codeforces Codeforces Round #177 (Div. 1) 9
1121 Yaroslav and Arrangements Categories Codeforces Codeforces Round #182 (Div. 1) 9
1122 Research Rover Categories Codeforces Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) 9
1123 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
1124 Tachibana Kanade's Tofu Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 9
1125 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
1126 Colorful Stones Categories Codeforces Codeforces Round #162 (Div. 1) 9
1127 DFS Categories Codeforces Lyft Level 5 Challenge 2018 - Final Round 9
1128 Candy Store Categories Live Archive 2012 North America - Southeast USA 9
1129 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
1130 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
1131 Lesson Timetable Categories Codeforces Codeforces Beta Round #37 9
1132 Sereja and Squares Categories Codeforces Codeforces Round #187 (Div. 1) 9
1133 Sandy and Nuts Categories Codeforces Codeforces Round #332 (Div. 2) 9
1134 Red and Black Tree Categories Codeforces Codeforces Round #221 (Div. 1) 9
1135 Random Function and Tree Categories Codeforces Codeforces Round #275 (Div. 1) 9
1136 Fox And Travelling Categories Codeforces Codeforces Round #290 (Div. 1) 9
1137 Transferring Pyramid Categories Codeforces Codeforces Round #206 (Div. 1) 9
1138 Valera and Number Categories Codeforces Codeforces Round #252 (Div. 2) 9
1139 Polycarp's Masterpiece Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 9
1140 Maxim and Calculator Categories Codeforces Codeforces Round #160 (Div. 1) 9
1141 Dima and Game Categories Codeforces Codeforces Round #167 (Div. 1) 9
1142 Binary Key Categories Codeforces Codeforces Round #193 (Div. 2) 9
1143 Subarray Cuts Categories Codeforces Rockethon 2015 9
1144 Mutation Categories Codeforces All-Ukrainian School Olympiad in Informatics 10
1145 Random Ranking Categories Codeforces Codeforces Round #183 (Div. 1) 10
1146 Number of Binominal Coefficients Categories Codeforces Codeforces Round #323 (Div. 1) 10
1147 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
1148 Ada and Zoo Categories SPOJ 10
1149 Longest Increasing Subsequence Categories Codeforces Codeforces Round #315 (Div. 1) 10
1150 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
1151 Help Shrek and Donkey Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10
1152 Longest Subsequence Categories Live Archive 2004 Asia - Manila 10
1153 An easy problem about trees Categories Codeforces MemSQL Start[c]UP 2.0 - Round 2 10
1154 Days of Floral Colours Categories Codeforces Codeforces Round #431 (Div. 1) 10
1155 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
1156 Boolean Function Categories Codeforces Codeforces Round #323 (Div. 1) 10
1157 Banners Categories Codeforces Zepto Code Rush 2014 10
1158 Sequence Transformation Categories Codeforces Codeforces Round #172 (Div. 1) 10
1159 #dynamic-programming&nbsp;(168)</span> Categories SPOJ 10
1160 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
1161 Stock Trading Categories Codeforces Rockethon 2014 10
1162 Sloth Categories Codeforces Codeforces Round #446 (Div. 1) 10
1163 Cookie Clicker Categories Codeforces Codeforces Round #222 (Div. 1) 10
1164 The Great Marathon Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
1165 Geometry Categories Live Archive 2005 Asia - Kolkata 10
1166 Kojiro and Furrari Categories Codeforces Codeforces Round #322 (Div. 2) 10
1167 Kyoya and Train Categories Codeforces Codeforces Round #309 (Div. 1) 10
1168 Forward, march! Categories Codeforces Codeforces Beta Round #11 10
1169 Simba on the Circle Categories Codeforces Educational Codeforces Round 4 10
1170 Caramel Clouds Categories Codeforces Codeforces Round #426 (Div. 1) 10
1171 Digits of Number Pi Categories Codeforces Codeforces Round #325 (Div. 1) 10
1172 Dynamic Programming Categories A2 Online Judge 10
1173 Subsequences Return Categories Codeforces Codeforces Round #283 (Div. 1) 10
1174 Combining Slimes Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 10
1175 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10
1176 Permanent Categories Codeforces Codeforces Round #268 (Div. 1) 10
1177 Summer Reading Categories Codeforces Codeforces Round #217 (Div. 2) 10
1178 Counting Skyscrapers Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1179 Buy One, Get One Free Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1180 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
1181 Dynamic Assignment Problem Categories SPOJ 10
1182 School Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
1183 Puzzle Lover Categories Codeforces Codeforces Round #339 (Div. 1) 10
1184 Numbers on the blackboard Categories Codeforces Codeforces Round #443 (Div. 1) 10
1185 To Hack or not to Hack Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10
1186 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1187 Selling Numbers Categories Codeforces Codeforces Round #402 (Div. 1) 10
1188 New Year Cactus Categories Codeforces Good Bye 2013 10
1189 Jzzhu and Squares Categories Codeforces Codeforces Round #257 (Div. 1) 10
1190 Inversions problem Categories Codeforces Rockethon 2015 10
1191 Colored Jenga Categories Codeforces Codeforces Round #242 (Div. 2) 10
1192 Vasily the Bear and Painting Square Categories Codeforces Codeforces Round #195 (Div. 2) 10
1193 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
1194 Galaxy Union Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 10
1195 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
1196 Mod Mod Mod Categories Codeforces Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3) 10
1197 World Evil Categories Codeforces Codeforces Beta Round #58 10