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Dynamic Programming problems
Problem Name Online Judge Year Contest Difficulty Level
1 DNA Sequences Categories SPOJ 1
2 Buying Apples! Categories SPOJ 1
3 I Can Guess the Data Structure! Categories UVA 1
4 To the Max Categories PKU 1
5 Chat room Categories Codeforces Codeforces Beta Round #54 (Div. 2) 1
6 Joysticks Categories Codeforces Codeforces Round #345 (Div. 2) 1
7 Activities Categories SPOJ 1
8 Tiling a Grid With Dominoes Categories Live Archive 2007 North America - Greater NY 1
9 The 3n + 1 problem Categories UVA 1
10 The Knapsack Problem Categories SPOJ 1
11 Forming Quiz Teams Categories UVA 1
12 Permutations Categories SPOJ 1
13 Collecting Beepers Categories UVA 1
14 Flags Categories Timus 1
15 Coin Change Categories UVA 1
16 Histogram Categories SPOJ 1
17 Grandpa's Walk Categories Live Archive 2012 Asia - Jakarta 1
18 ShorterSuperSum Categories TopCoder SRM 467 - Div2 easy] (14151) 1
19 Cross-country Categories SPOJ 1
20 Tri graphs Categories SPOJ 1
21 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 1
22 ACM (ACronymMaker) Categories SPOJ 1
23 Blueberries Categories SPOJ 1
24 Kefa and First Steps Categories Codeforces Codeforces Round #321 (Div. 2) 1
25 Kuriyama Mirai's Stones Categories Codeforces Codeforces Round #248 (Div. 2) 1
26 Taxi Categories SPOJ 1
27 Dividing coins Categories UVA 1
28 The Bale Tower Categories TJU 1
29 Longest Palindrome Categories UVA 1
30 Trees Categories Live Archive 2004 South Pacific 1
31 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
32 The Twin Towers Categories UVA 1
33 Bridging signals Categories Live Archive 2003 Europe - Northwestern 1
34 Palindrome 2000 Categories SPOJ 1
35 Pilots Categories SPOJ 1
36 Sums in a Triangle Categories CodeChef 1
37 Wedding shopping Categories UVA 1
38 What Goes Up Categories UVA 1
39 Staircases Categories Timus 1
40 The Tower of Babylon Categories UVA 1
41 Fishmonger Categories SPOJ 1
42 Two Ends Categories Live Archive 2005 North America - East Central NA 1
43 Take the Land Categories UVA 1
44 Testing the CATCHER Categories UVA 1
45 Dreamoon and WiFi Categories Codeforces Codeforces Round #272 (Div. 2) 1
46 Candy Categories SPOJ 1
47 Longest Common Substring Categories SPOJ 1
48 Bicoloring Categories UVA 1
49 Fibonacci Freeze Categories UVA 1
50 Given Length and Sum of Digits... Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
51 Aibohphobia Categories SPOJ 1
52 THE DRUNK JAILER Categories PKU 1
53 Petya and Strings Categories Codeforces Codeforces Beta Round #85 (Div. 2 Only) 1
54 Easy Longest Increasing Subsequence Categories SPOJ 1
55 Optimal Array Multiplication Sequence Categories UVA 1
56 Party Schedule Categories SPOJ 1
57 Sums in a Triangle Categories SPOJ 1
58 Maximum in Table Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 1
59 Lucky Tickets Categories Timus 1
60 23 out of 5 Categories UVA 1
61 ABC Path Categories SPOJ 1
62 QAQ Categories Codeforces Codeforces Round #447 (Div. 2) 1
63 Exploring Pyramids Categories Live Archive 2005 Europe - Northeastern 1
64 LATGACH3 Categories SPOJ 1
65 How do you add? Categories UVA 1
66 The Double HeLiX Categories SPOJ 1
67 New Year and Hurry Categories Codeforces Good Bye 2016 1
68 Way Too Long Words Categories Codeforces Codeforces Beta Round #65 (Div. 2) 1
69 Cutting Sticks Categories UVA 1
70 Enormous Input Test Categories CodeChef 1
71 Puzzles Categories Codeforces Codeforces Round #196 (Div. 2) 1
72 Scuba diver Categories SPOJ 1
73 Can you answer these queries I Categories SPOJ 1
74 Membership Management Categories Live Archive 2010 Asia - Tokyo 1
75 Stacking Boxes Categories UVA 1
76 Ilya and Queries Categories Codeforces Codeforces Round #186 (Div. 2) 1
77 Two Ends Categories SPOJ 1
78 Fool the Police Categories SPOJ 1
79 Positive or Negative Categories A2 Online Judge 1
80 Luggage Categories UVA 1
81 Edit distance Categories SPOJ 1
82 Tower of Babylon Categories SPOJ 1
83 Number Steps Categories Live Archive 2000 Asia - Tehran 1
84 Binary Lexicographic Sequence Categories Timus 1
85 Largest Submatrix Categories UVA 1
86 Vacation Categories UVA 1
87 Quasi Binary Categories Codeforces Codeforces Round #300 1
88 Boredom Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 1
89 Roads Categories SPOJ 1
90 Chocolate Categories SPOJ 1
91 Scientific Conference Categories Timus 1
92 Milliard Vasya's Function Categories Timus 1
93 Candy Categories Live Archive 2008 Latin America - South America 1
94 Flowers Categories Codeforces Codeforces Round #271 (Div. 2) 1
95 Omar Categories A2 Online Judge 1
96 BLAST Categories SPOJ 1
97 Hotels Along the Croatian Coast Categories SPOJ 1
98 Hangover Categories PKU 1
99 Mice and Maze Categories Live Archive 2001 Europe - Southwestern 1
100 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
101 Let Me Count The Ways Categories UVA 1
102 Pearls Categories Live Archive 2002 Europe - Northwestern 1
103 0110SS Categories SPOJ 1
104 Vertex Cover Categories SPOJ 1
105 Seinfeld Categories SPOJ 1
106 Pocket Money Categories SPOJ 1
107 Maximum Sum Categories UVA 1
108 Tiling Up Blocks Categories Live Archive 2003 Asia - Kaohsiung 1
109 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 1
110 Sereja and Suffixes Categories Codeforces Codeforces Round #215 (Div. 2) 1
111 Summing to a Square Prime Categories SPOJ 1
112 Drazil and Factorial Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 1
113 Stacking Cylinders Categories Live Archive 2004 North America - North Central NA & North America - Pacific Northwest & North America - Greater NY 1
114 Prime Permutations Categories CodeChef 1
115 History Grading Categories UVA 1
116 Divisibility by Eight Categories Codeforces Codeforces Round #306 (Div. 2) 1
117 Wachovia Bank Categories SPOJ 1
118 Rectangles Perimeter Categories SPOJ 1
119 Bee Walk Categories SPOJ 1
120 Prime Path Categories Live Archive 2006 Europe - Northwestern 1
121 COSTLY CHESS Categories SPOJ 1
122 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
123 Treats for the Cows Categories SPOJ 1
124 Alphacode Categories Live Archive 2004 North America - East Central NA 1
125 Party Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 1
126 SuperSale Categories UVA 1
127 MAXIMUM WOOD CUTTER Categories SPOJ 1
128 K-based Numbers. Version 2 Categories Timus 1
129 Woodcutters Categories Codeforces Codeforces Round #303 (Div. 2) 1
130 Distinct Subsequences Categories SPOJ 1
131 Assignments Categories SPOJ 1
132 Mixtures Categories SPOJ 1
133 Training for final Categories SPOJ 1
134 DZY Loves Chessboard Categories Codeforces Codeforces Round #254 (Div. 2) 1
135 Strategic Defense Initiative Categories UVA 1
136 Two Substrings Categories Codeforces Codeforces Round #306 (Div. 2) 1
137 Equal Sum Sets Categories Live Archive 2013 Asia - Aizu 1
138 Rent your airplane and make money Categories SPOJ 1
139 Watermelon Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
140 Save Thy Toys Categories SPOJ 1
141 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
142 Exponentiation Categories PKU 1
143 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
144 Trip Planning Categories Live Archive 2008 Asia - Taipei 1
145 Dollars Categories UVA 1
146 Unidirectional TSP Categories UVA 1
147 Phidias Categories SPOJ 1
148 Chop Ahoy! Revisited! Categories SPOJ 1
149 Permutation Arrays Categories UVA 1
150 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
151 XOR Maximization Categories SPOJ 1
152 BerSU Ball Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
153 Bytelandian gold coins Categories SPOJ 1
154 Square Brackets Categories SPOJ 1
155 Toy Army Categories Codeforces Codeforces Beta Round #72 (Div. 2 Only) 1
156 Jill Rides Again Categories UVA 1
157 Maximum Sum Categories Timus 1
158 Princess Farida Categories SPOJ 1
159 Tile Code Categories Live Archive 2007 Asia - Seoul 1
160 Aliens at the train Categories SPOJ 1
161 Coins Game Categories SPOJ 1
162 Flipping Game Categories Codeforces Codeforces Round #191 (Div. 2) 1
163 Feynman Categories SPOJ 1
164 Perfection Categories UVA 1
165 Making Change Categories TJU 1
166 Trip Categories SPOJ 1
167 Martian Mining Categories SPOJ 1
168 Black or White Categories SPOJ 1
169 Twin Primes Categories UVA 1
170 Sum of Digits Categories SPOJ 1
171 Homer Simpson Categories UVA 1
172 Longest Common Subsequence Categories UVA 1
173 K-based Numbers Categories Timus 1
174 Divisibility Categories UVA 1
175 Longest Run on a Snowboard Categories UVA 1
176 Mashmokh and ACM Categories Codeforces Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) 1
177 Alphacode Categories SPOJ 1
178 Largest Rectangle in a Histogram Categories SPOJ 1
179 The jackpot Categories UVA 1
180 Getting in Line Categories UVA 1
181 Square Country Categories Timus 1
182 Anton and Danik Categories Codeforces Codeforces Round #379 (Div. 2) 1
183 Building Bridges Categories SPOJ 1
184 Divisible Group Sums Categories UVA 1
185 Generations of Tribbles Categories Live Archive 2013 North America - Pacific Northwest 1
186 In Danger Categories SPOJ 1
187 Prime Digital Roots Categories Live Archive 2001 South Pacific 1
188 DIE HARD Categories SPOJ 1
189 Tiling a Grid With Dominoes Categories SPOJ 1
190 Simple Math Categories A2 Online Judge 1
191 Piggy-Bank Categories SPOJ 1
192 Ingenuous Cubrency Categories UVA 1
193 A+B Problem Categories PKU 1
194 Help the soldier Categories SPOJ 1
195 Cleaning Robot Categories SPOJ 1
196 Sweet and Sour Rock Categories SPOJ 1
197 Fibonacci Words Categories Live Archive 2012 World Finals - Warsaw 1
198 Number of Ways Categories Codeforces Codeforces Round #266 (Div. 2) 1
199 Compromise Categories UVA 1
200 Is Bigger Smarter? Categories UVA 1
201 Binary Apple Tree Categories Timus 1
202 Robot Instructions Categories UVA 1
203 Magic Grid Categories SPOJ 1
204 The Great Ball Categories SPOJ 1
205 Adjacent Bit Counts Categories SPOJ 1
206 Philosophers Stone Categories SPOJ 1
207 No Change Categories SPOJ 1
208 Binary Search Tree Categories Live Archive 2010 Asia - Daejeon 1
209 Cormen --- The Best Friend Of a Man Categories Codeforces Codeforces Round #377 (Div. 2) 1
210 Metro Categories Timus 1
211 Non-Decreasing Digits Categories SPOJ 1
212 Fence Categories Codeforces Codeforces Round #211 (Div. 2) 1
213 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
214 Point Connection Game in a Circle Categories SPOJ 2
215 Making Change Categories UVA 2
216 Mobile Service Categories SPOJ 2
217 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
218 Travelling Salesman Categories UVA 2
219 Polo the Penguin and Matrix Categories Codeforces Codeforces Round #177 (Div. 2) 2
220 Bar Codes Categories UVA 2
221 Tower of Cubes Categories UVA 2
222 Three-coloring of binary trees Categories SPOJ 2
223 Vasya and String Categories Codeforces Codeforces Round #354 (Div. 2) 2
224 Feline Olympics - Mouseball Categories SPOJ 2
225 Flight Planner Categories UVA 2
226 Anniversary Party Categories Timus 2
227 Leaves Categories SPOJ 2
228 Problem 3 Categories SPOJ 2
229 Chain Reaction Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 2
230 Game of Credit Cards Categories Codeforces Codeforces Round #401 (Div. 2) 2
231 Sinking Ship Categories Codeforces Codeforces Beta Round #59 (Div. 2) 2
232 Chopsticks Categories UVA 2
233 BATMAN3 Categories SPOJ 2
234 Bit Mask Categories UVA 2
235 Restoring Password Categories Codeforces Codeforces Beta Round #76 (Div. 2 Only) 2
236 Destruction Cannon Categories URI 2
237 Jugs Categories UVA 2
238 Con-Junctions Categories SPOJ 2
239 Hard problem Categories Codeforces Codeforces Round #367 (Div. 2) 2
240 Counting The Way of Bracket Replacement Categories SPOJ 2
241 Dancing Cows Categories SPOJ 2
242 Musketeers Categories SPOJ 2
243 Tennis Championship Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 2
244 Bing it Categories Live Archive 2009 Asia - Harbin 2
245 Nested Dolls Categories SPOJ 2
246 String to Palindrome Categories UVA 2
247 Up Subsequence Categories SPOJ 2
248 Counting K-Rectangle Categories SPOJ 2
249 Counting binary strings Categories SPOJ 2
250 Painting the balls Categories SGU 2
251 Another Longest Increasing Subsequence Problem Categories SPOJ 2
252 Little Elephant and Painting Categories CodeChef 2
253 Covered Path Categories Codeforces Codeforces Round #298 (Div. 2) 2
254 Card Sorting Categories SPOJ 2
255 Interesting number Categories SPOJ 2
256 Always on the run Categories UVA 2
257 Fibonacci System Categories Live Archive 2008 Europe - Northeastern 2
258 Kyoya and Colored Balls Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 2
259 Unnatural Conditions Categories Codeforces AIM Tech Round 5 (rated, Div. 1 + Div. 2) 2
260 String Partition Categories UVA 2
261 KTV Categories UVA 2
262 BATMAN2 Categories SPOJ 2
263 Diving for Gold Categories UVA 2
264 Soldier and Number Game Categories Codeforces Codeforces Round #304 (Div. 2) 2
265 Erdos Numbers Categories Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 2
266 Inna and Choose Options Categories Codeforces Codeforces Round #234 (Div. 2) 2
267 Menu Categories SPOJ 2
268 Dab of Backpack Categories SPOJ 2
269 Wooden Sticks Categories SPOJ 2
270 Another Box Problem Categories SPOJ 2
271 Mosaic Categories Live Archive 2009 North America - Southeast USA 2
272 Weights and Measures Categories UVA 2
273 Game of Sum Categories UVA 2
274 Queue Categories UVA 2
275 Tourist Categories SPOJ 2
276 Bicolored Horses Categories Timus 2
277 Make Palindrome Categories UVA 2
278 Decoding Morse Sequences Categories SPOJ 2
279 Functions again Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 2
280 Squares Categories UVA 2
281 Deliver pizza Categories SPOJ 2
282 NERED Categories SPOJ 2
283 Shopping Categories Live Archive 2014 Asia - Tokyo 2
284 Pebble Solitaire Categories UVA 2
285 Boxes Categories UVA 2
286 Square Categories UVA 2
287 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
288 Maximum Sub-sequence Product Categories UVA 2
289 Nudnik Photographer Categories Timus 2
290 Chop Ahoy! Revisited! Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 2
291 Pebbles Categories Live Archive 2007 North America - Pacific Northwest & North America - Southern California 2
292 LUCIFER Number Categories SPOJ 2
293 Ferry Loading Categories UVA 2
294 Again Palindrome Categories UVA 2
295 Color the Fence Categories Codeforces Codeforces Round #202 (Div. 2) 2
296 Reposts Categories Codeforces VK Cup 2015 - Qualification Round 1 2
297 Particular Palindromes Categories SPOJ 2
298 Street Categories SPOJ 2
299 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 2
300 Railway Tickets Categories Timus 2
301 Murcia's Skyline Categories UVA 2
302 New Year and Domino Categories Codeforces Good Bye 2015 2
303 Walking on the Safe Side Categories UVA 2
304 Land Acquisition Categories SPOJ 2
305 Making A Budget Categories SPOJ 2
306 Dice Categories SPOJ 2
307 Pay the Price Categories UVA 2
308 False Mirrors Categories Timus 2
309 Balancing the Stone Categories SPOJ 2
310 Handball Categories UVA 2
311 Threeprime Numbers Categories Timus 2
312 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
313 The Courier Categories SPOJ 2
314 Concert Tour Categories Live Archive 2014 Asia - Bangkok 2
315 Fibo Categories A2 Online Judge 2
316 Slurpys Categories UVA 2
317 Triangular N-Queens Problem Categories Live Archive 2006 North America - Greater NY 2
318 Segments Categories Timus 2
319 Approximating a Constant Range Categories Codeforces Codeforces Round #333 (Div. 2) 2
320 Temptation Island Categories SPOJ 2
321 Brackets Sequence Categories Timus 2
322 G-One Numbers Categories SPOJ 2
323 Space Elevator Categories PKU 2
324 Modulo Sum Categories Codeforces Codeforces Round #319 (Div. 2) 2
325 JEDNAKOST Categories SPOJ 2
326 I-Keyboard Categories SPOJ 2
327 Quadratic Equation Categories SPOJ 2
328 String Distance and Transform Process Categories UVA 2
329 Photo to Remember Categories Codeforces VK Cup 2015 - Qualification Round 1 2
330 Partition Categories SPOJ 2
331 String Shuffle Categories SPOJ 2
332 Pride Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 2
333 BATMAN1 Categories SPOJ 2
334 Simple Minded Hashing Categories UVA 2
335 Sum of Different Primes Categories UVA 2
336 Geometric Progression Categories Codeforces Codeforces Round #Pi (Div. 2) 2
337 Marks Distribution Categories UVA 2
338 Optimal Binary Search Tree Categories UVA 2
339 Ministry Categories Timus 2
340 String Computer Categories UVA 2
341 Distinct Subsequences Categories UVA 2
342 Longest Match Categories UVA 2
343 Motoboy Categories URI 2
344 DZY Loves Sequences Categories Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 2
345 Password Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 2
346 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
347 Sorting is not easy Categories SPOJ 2
348 A DP Problem Categories Live Archive 2003 Asia - Tehran 2
349 Sequence Categories Live Archive 2014 Asia - Kuala Lumpur 2
350 Rain Categories SPOJ 2
351 Tight Words Categories UVA 2
352 Journey Categories Codeforces Codeforces Round #428 (Div. 2) 2
353 Catch Fish Categories SPOJ 2
354 Alternative Thinking Categories Codeforces Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) 2
355 Ra-One Numbers Categories SPOJ 2
356 Drop the Triples Categories Live Archive 2007 Latin America - South America 2
357 Black-White Grid Categories Live Archive 2006 Asia - Hanoi 2
358 Yoda Goes Palindromic ! Categories SPOJ 2
359 Cow Frisbee Team Categories TJU 2
360 String problem Categories SPOJ 2
361 Esferas Categories SPOJ 2
362 Timofey and a tree Categories Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 2
363 Polo the Penguin and Strings Categories Codeforces Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) 2
364 The Marriage Interview :-) Categories UVA 2
365 Beautiful People Categories SGU 2
366 1807 Categories SPOJ 2
367 Another Tree Problem Categories SPOJ 2
368 Maximum sum on a torus Categories UVA 2
369 Game Show Math Categories UVA 2
370 Chest of Drawers Categories UVA 2
371 Tiling Categories UVA 2
372 Caesar's Legions Categories Codeforces Codeforces Beta Round #89 (Div. 2) 2
373 Trouble of 13-Dots Categories UVA 2
374 Bubble Sort Graph Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 3
375 Hackers' Crackdown Categories UVA 3
376 FOODIE Categories SPOJ 3
377 Painting Fence Categories Codeforces Codeforces Round #256 (Div. 2) 3
378 String reduction Categories SPOJ 3
379 Raucous Rockers Categories UVA 3
380 Term Strategy Categories UVA 3
381 Hippity Hopscotch Categories UVA 3
382 Art Union Categories Codeforces Codeforces Round #241 (Div. 2) 3
383 Re-Arrange II Categories SPOJ 3
384 Probablistic OR Categories SPOJ 3
385 Fetching Cooking Tools Categories CodeChef 3
386 Common Subsequences Categories SPOJ 3
387 Candy (Again) Categories SPOJ 3
388 Arpa's weak amphitheater and Mehrdad's valuable Hoses Categories Codeforces Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) 3
389 Combo Deal Categories UVA 3
390 Car with powers Categories SPOJ 3
391 Slikar Categories SPOJ 3
392 The least round way Categories Codeforces Codeforces Beta Round #2 3
393 Longtail Hedgehog Categories Codeforces Codeforces Round #338 (Div. 2) 3
394 Little Elephant and Interval Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 3
395 Walking Around Wisely Categories UVA 3
396 Free Candies Categories UVA 3
397 Hierarchy Categories Timus 3
398 Working out Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 3
399 Bear and Compressing Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
400 Polygon Categories SPOJ 3
401 Mike and gcd problem Categories Codeforces Codeforces Round #410 (Div. 2) 3
402 Booking System Categories Codeforces Codeforces Round #241 (Div. 2) 3
403 Partition the sequence Categories SPOJ 3
404 Determine it Categories UVA 3
405 Cards, bags and coins Categories CodeChef 3
406 Zuma Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 3
407 Permutation Categories Codeforces Codeforces Round #209 (Div. 2) 3
408 Good Sequences Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 3
409 Plug-in Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 3
410 Kefa and Dishes Categories Codeforces Codeforces Round #321 (Div. 2) 3
411 Simple Strings Categories Codeforces Educational Codeforces Round 12 3
412 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
413 Bribe the Prisoners Categories SPOJ 3
414 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 3
415 Beautiful Numbers Categories UVA 3
416 Mike and Feet Categories Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 3
417 Omar Loves Candies Categories A2 Online Judge 3
418 Minus Operation Categories SPOJ 3
419 Save the problem! Categories Codeforces MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists) 3
420 Orchard Trees Categories UVA 3
421 Mysterious Present Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 3
422 Ilya and Escalator Categories Codeforces Codeforces Round #293 (Div. 2) 3
423 Count Paths Categories A2 Online Judge 3
424 Long Path Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
425 Greenhouse Effect Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 3
426 Journey Categories Codeforces Codeforces Round #374 (Div. 2) 3
427 RGBStreet Categories TopCoder SRM 325 - Div2 medium] (10005) 3
428 Little Red Riding Hood Categories UVA 3
429 Little Girl and Maximum XOR Categories Codeforces Codeforces Round #169 (Div. 2) 3
430 Triangles Categories Live Archive 2014 South Pacific 3
431 Budget Travel Categories UVA 3
432 Sagheer, the Hausmeister Categories Codeforces Codeforces Round #417 (Div. 2) 3
433 Even Palindrome Categories SPOJ 3
434 Physics Practical Categories Codeforces Codeforces Round #154 (Div. 2) 3
435 BadNeighbors Categories TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
436 Zeta-Nim Game Categories CodeChef 3
437 Barcode Categories Codeforces Codeforces Round #139 (Div. 2) 3
438 ACM (ACronym Maker) Categories Live Archive 2005 North America - East Central NA 3
439 String Popping Categories UVA 3
440 Crime Wave - The Sequel Categories UVA 3
441 Mr. Kitayuta, the Treasure Hunter Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 3
442 Recycling Bottles Categories Codeforces Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) 3
443 Palindromic Subsequence Categories UVA 3
444 Tour Categories UVA 3
445 Building Bridges(HARD) Categories SPOJ 3
446 Many polygons Categories SPOJ 3
447 Ada and Game Categories SPOJ 3
448 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
449 An impassioned circulation of affection Categories Codeforces Codeforces Round #418 (Div. 2) 3
450 How Many O's? Categories UVA 3
451 Minimal Coverage Categories Timus 3
452 Scheduling Lectures Categories UVA 3
453 New Skateboard Categories Codeforces Educational Codeforces Round 8 3
454 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
455 IOI07 Miners Categories SPOJ 3
456 Paid Roads Categories SPOJ 3
457 Help Bob Categories SPOJ 3
458 Many Paths, One Destination Categories UVA 3
459 Best Coalitions Categories UVA 3
460 Fast Food Categories UVA 3
461 Alyona and Spreadsheet Categories Codeforces Codeforces Round #401 (Div. 2) 3
462 Little Elephant and Movies Categories CodeChef 3
463 Gentlemen Categories Timus 3
464 Intervals of Monotonicity Categories Timus 3
465 Petya and Java Categories Codeforces Codeforces Beta Round #61 (Div. 2) 3
466 End up with More Teams Categories UVA 3
467 Hard Process Categories Codeforces Educational Codeforces Round 11 3
468 The Secret of an Aerolite Categories SPOJ 3
469 The Vindictive Coach Categories UVA 3
470 Most Servings Meal Categories SPOJ 3
471 Writing Code Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 3
472 Cards Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 3
473 Robbers' watch Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 3
474 Maximum Triangle Area Categories SPOJ 3
475 Sum of Digits Categories Timus 3
476 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 3
477 Coloring Trees Categories Codeforces Codeforces Round #369 (Div. 2) 3
478 Distance in Tree Categories Codeforces VK Cup 2012 Round 1 3
479 COUNT PAREN Categories SPOJ 3
480 Pleasing Chief Categories CodeChef 3
481 Vanya and Scales Categories Codeforces Codeforces Round #308 (Div. 2) 3
482 Xenia and Weights Categories Codeforces Codeforces Round #197 (Div. 2) 3
483 Shopping Trip Categories UVA 3
484 Hopeless Coach Categories TJU 3
485 Choosing Capital for Treeland Categories Codeforces Codeforces Round #135 (Div. 2) 3
486 Fewest Flops Categories UVA 3
487 Alyona and the Tree Categories Codeforces Codeforces Round #358 (Div. 2) 3
488 Bear and Prime Numbers Categories Codeforces Codeforces Round #226 (Div. 2) 3
489 Mahmoud and a Message Categories Codeforces Codeforces Round #396 (Div. 2) 3
490 A and B and Interesting Substrings Categories Codeforces Codeforces Round #294 (Div. 2) 3
491 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
492 Sereja and Game Categories CodeChef 3
493 I-Keyboard Categories Live Archive 2000 Europe - Central 3
494 Bear and Blocks Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
495 Ladder Categories Codeforces Codeforces Round #171 (Div. 2) 3
496 Sense of Beauty Categories Timus 3
497 Internet Address Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 3
498 The Debut Album Categories Timus 3
499 Mnemonics and Palindromes Categories Timus 3
500 Make Psycho Categories SPOJ 3
501 AGTC Categories UVA 3
502 Dynamic LCA Categories SPOJ 3
503 Greg and Graph Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
504 Traveling by Stagecoach Categories SPOJ 3
505 Greedy Hydra Categories SPOJ 3
506 Lazy Math Instructor Categories Live Archive 2000 Asia - Tehran 3
507 The Matrix Game Categories CodeChef 3
508 The Values You Can Make Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 4
509 Busy Programmer Categories UVA 4
510 Bridge Building Categories UVA 4
511 Trees Again Categories SPOJ 4
512 One-two, One-two 2 Categories Timus 4
513 The Intriguing Obsession Categories Codeforces Codeforces Round #439 (Div. 2) 4
514 Fatawy Categories SPOJ 4
515 Bad Luck Island Categories Codeforces Codeforces Round #301 (Div. 2) 4
516 A and B and Lecture Rooms Categories Codeforces Codeforces Round #294 (Div. 2) 4
517 A DP Problem Categories UVA 4
518 Minion Circle Categories CodeChef 4
519 Lov-e Pap Pap-e Polti Categories SPOJ 4
520 Maximum Submatrix 2 Categories Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 4
521 Riding in a Lift Categories Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 4
522 Bottle Taps Categories Timus 4
523 Gerald and Giant Chess Categories Codeforces Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) 4
524 Appleman and Tree Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 4
525 The Child and Zoo Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 4
526 XOR Equation Categories Codeforces 8VC Venture Cup 2016 - Final Round 4
527 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 4
528 Gasoline Station Categories Timus 4
529 Red-Green Towers Categories Codeforces Codeforces Round #273 (Div. 2) 4
530 Expect the Expected Categories UVA 4
531 Zero Tree Categories Codeforces Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) 4
532 Boy Scouts Categories SPOJ 4
533 Fire Again Categories Codeforces Codeforces Beta Round #35 (Div. 2) 4
534 The Bridges of Kolsberg Categories UVA 4
535 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
536 Bright Bracelet Categories Live Archive 2003 North America - Mid-Central USA 4
537 Round Table Knights Categories Codeforces Codeforces Beta Round #65 (Div. 2) 4
538 Malevich Strikes Back! Categories Timus 4
539 Buns Categories Codeforces Codeforces Beta Round #82 (Div. 2) 4
540 Classmates 2 Categories Timus 4
541 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
542 Babaei and Birthday Cake Categories Codeforces Codeforces Round #343 (Div. 2) 4
543 Cookies Categories Codeforces Codeforces Beta Round #64 4
544 Can U Win? Categories UVA 4
545 A Lot of Games Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
546 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
547 Dominoes Categories SPOJ 4
548 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 4
549 Reberland Linguistics Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 4
550 Pie Rules Categories Codeforces MemSQL Start[c]UP 3.0 - Round 1 4
551 Expression Again Categories UVA 4
552 Image Preview Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 4
553 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 4
554 SMS Categories Timus 4
555 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 4
556 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
557 INVITATION FOR TECHOFES Categories SPOJ 4
558 Zeros and Ones Categories UVA 4
559 Bag of mice Categories Codeforces Codeforces Round #105 (Div. 2) 4
560 Fools and Roads Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
561 Dima and Salad Categories Codeforces Codeforces Round #214 (Div. 2) 4
562 Rent your airplane and make money Categories Live Archive 2003 Europe - Southwestern 4
563 Matches Categories UVA 4
564 Convex Polygons Categories SPOJ 4
565 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
566 Shaass and Bookshelf Categories Codeforces Codeforces Round #178 (Div. 2) 4
567 Python Indentation Categories Codeforces Codeforces Round #455 (Div. 2) 4
568 Forming Teams Categories Codeforces Codeforces Round #133 (Div. 2) 4
569 BATMAN4 Categories SPOJ 4
570 Cái túi ( Hard version ) Categories SPOJ Vietnam 4
571 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
572 Chocolate Categories SPOJ 4
573 Another Assignment Problem Categories SPOJ 4
574 Avoiding Jungle in the Dark Categories UVA 4
575 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 4
576 Letter Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 4
577 Book of Evil Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 4
578 Clique Problem Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 4
579 Vladik and Memorable Trip Categories Codeforces Codeforces Round #416 (Div. 2) 4
580 Ingredients Categories SPOJ 4
581 Crack Categories Timus 4
582 Digit Sum Categories UVA 4
583 Chloe and pleasant prizes Categories Codeforces Codeforces Round #384 (Div. 2) 4
584 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
585 ICPC Team Strategy Categories UVA 4
586 Drazil and Tiles Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
587 Namit In Trouble Categories SPOJ 4
588 Bit by Bit Categories SPOJ 4
589 Little Elephant and Blocks Categories CodeChef 4
590 Civilization Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
591 DIVSEQ Categories SPOJ 4
592 Party Categories A2 Online Judge 4
593 Lemon Tale Categories Timus 4
594 Arthur and Table Categories Codeforces Codeforces Round #311 (Div. 2) 4
595 New Year and Fireworks Categories Codeforces Good Bye 2016 4
596 Divide and conquer Categories CodeChef 4
597 Matchsticks Categories TJU 4
598 Drop the Triples Categories SPOJ 4
599 Generate a String Categories Codeforces Educational Codeforces Round 16 4
600 Dumb Bones Categories UVA 4
601 Cow Program Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
602 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
603 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 4
604 Mars Canals Categories Timus 4
605 Philip J. Fry Problem Categories UVA 4
606 Chocolate Box Categories UVA 4
607 Balanced Numbers Categories SPOJ 4
608 Tiling Dominoes Categories UVA 4
609 Communication Fiend Categories Timus 4
610 Assignments Categories Live Archive 2010 Asia - Harbin 4
611 Antimatter Ray Clearcutting Categories UVA 4
612 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 4
613 Folding Categories Timus 4
614 Number of Paths in the Empire Categories SGU 4
615 Antimonotonicity Categories UVA 4
616 Batman Categories UVA 4
617 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
618 Account Book Categories UVA 4
619 Who is The Boss Categories SPOJ 4
620 Jeff and Rounding Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 4
621 Prefixes and Suffixes Categories Codeforces Codeforces Round #246 (Div. 2) 4
622 Queries for Number of Palindromes Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
623 Fire Categories Codeforces Codeforces Round #436 (Div. 2) 4
624 Fox And Jumping Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
625 Free Parentheses Categories UVA 4
626 Najkraci Categories SPOJ 4
627 Let go to the movies Categories SPOJ 4
628 Once Again... Categories Codeforces Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) 4
629 Going Postal Categories Live Archive 2014 South Pacific 4
630 Mysterious Crime Categories Codeforces Codeforces Round #519 by Botan Investments 4
631 Binary Search Categories Live Archive 2000 Europe - Northeastern 4
632 Famil Door and Brackets Categories Codeforces Codeforces Round #343 (Div. 2) 5
633 Correcting Mistakes Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
634 Checkout Assistant Categories Codeforces Codeforces Beta Round #19 5
635 Cargo Agency Categories Timus 5
636 Paint the Tree Categories CodeChef 5
637 Promotion Categories URI 5
638 Berzerk Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 5
639 Spy Syndrome 2 Categories Codeforces Manthan, Codefest 16 5
640 Wet Shark and Blocks Categories Codeforces Codeforces Round #341 (Div. 2) 5
641 Mario Kart Categories A2 Online Judge 5
642 Dima and Hares Categories Codeforces Codeforces Round #208 (Div. 2) 5
643 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
644 Valid Sets Categories Codeforces Codeforces Round #277 (Div. 2) 5
645 Jeff and Furik Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 5
646 Optimal Cut Categories UVA 5
647 Fibonacci Words Categories UVA 5
648 Sum Categories Codeforces Codeforces Beta Round #46 (Div. 2) 5
649 An overnight dance in discotheque Categories Codeforces Codeforces Round #418 (Div. 2) 5
650 JUMPING DORA Categories SPOJ 5
651 Counting Rectangles is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 5
652 Substring and Subsequence Categories Codeforces VK Cup 2012 Round 2 5
653 Two Paths Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
654 Connect Line Segments Categories SPOJ 5
655 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 5
656 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
657 Count Digits Categories CodeChef 5
658 Connected Components Categories Codeforces Croc Champ 2013 - Round 1 5
659 A Simple Task Categories Codeforces Codeforces Beta Round #11 5
660 Sums of Digits Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 5
661 Bear and Tower of Cubes Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 5
662 IPL - CRICKET TOURNAMENT Categories SPOJ 5
663 Inversions problem Categories Codeforces Rockethon 2015 5
664 Allergy Test Categories UVA 5
665 Longest Increasing Sequence Categories UVA 5
666 Patches Categories URI 5
667 DNA Laboratory Categories SPOJ 5
668 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
669 Ciel and Duel Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 5
670 Spiders Categories Codeforces School Regional Team Contest, Saratov, 2011 5
671 Dynasty Puzzles Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
672 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 5
673 Running Track Categories Codeforces Codeforces Round #338 (Div. 2) 5
674 Restaurant Categories Codeforces Testing Round #12 5
675 HexagonalBattlefield Categories TopCoder SRM 449 - Div1 medium] (13903) 5
676 Anniversary Firework Categories Timus 5
677 K-based Numbers. Version 3 Categories Timus 5
678 Pillars Categories Codeforces Codeforces Round #271 (Div. 2) 5
679 Covering Sets Categories CodeChef 5
680 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
681 Basketball Team Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
682 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 5
683 Sereja and Bubble Sort Categories CodeChef 5
684 Lucky Common Subsequence Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
685 WordMath Categories TopCoder Unknown () 5
686 Sequence Categories Codeforces Codeforces Beta Round #13 5
687 Subsequence Problem Categories SPOJ 5
688 Running with Obstacles Categories Codeforces VK Cup 2016 - Qualification Round 1 5
689 Roman and Numbers Categories Codeforces Codeforces Round #235 (Div. 2) 5
690 Super M Categories Codeforces Codeforces Round #328 (Div. 2) 5
691 Levko and Array Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 5
692 Choosing Balls Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 5
693 Strip Categories Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 5
694 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
695 Independent Attacking Zones Categories UVA 5
696 The Unreal Tournament Categories UVA 5
697 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
698 Alyona and Strings Categories Codeforces Codeforces Round #358 (Div. 2) 5
699 The Bakery Categories Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 5
700 How many trees? Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 5
701 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
702 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
703 Party trouble Categories SPOJ 5
704 Obsessive String Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 5
705 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
706 Minimization Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 5
707 Iahub and Permutations Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 5
708 Candy Categories UVA 5
709 Weak Links Categories UVA 5
710 Summing Slopes Categories CodeChef 5
711 Lucky Tree Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 5
712 Happiness to People! Categories Timus 5
713 CreatureTraining Categories TopCoder TCO08 Round 2 - Div1 medium] (12012) 5
714 Elimination Categories Codeforces RCC 2014 Warmup (Div. 2) 5
715 Coin Changing Again Categories UVA 5
716 Upgrading Array Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 5
717 Square Subsets Categories Codeforces Codeforces Round #448 (Div. 2) 5
718 Huffman´s Greed Categories SPOJ 5
719 Roadworks Categories Timus 5
720 Increase Sequence Categories Codeforces Codeforces Round #266 (Div. 2) 5
721 E-mail Categories Timus 5
722 Chocolate Bar Categories Codeforces Educational Codeforces Round 1 5
723 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
724 Atomic Car Race Categories UVA 5
725 Hotel Categories Live Archive 2005 Asia - Tehran 5
726 Winter is here Categories Codeforces Codeforces Round #428 (Div. 2) 5
727 Antimatter Categories Codeforces Codeforces Round #225 (Div. 1) 5
728 Ship Routes Categories Timus 5
729 Enterprise Categories Timus 5
730 Robot Rapping Results Report Categories Codeforces CROC 2016 - Elimination Round 5
731 Hanoi Factory Categories Codeforces Codeforces Round #401 (Div. 2) 5
732 Testing the CATCHER Categories Live Archive 1994 World Finals - Phoenix 5
733 GO FOR DIAMONDS Categories SPOJ 5
734 Symmetric and Transitive Categories Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 5
735 Vasya and Beautiful Arrays Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 5
736 Train Categories Timus 5
737 The Islands Categories UVA 5
738 Match & Catch Categories Codeforces Codeforces Round #244 (Div. 2) 6
739 Bracket Sequence Categories SPOJ 6
740 Eating High Categories Timus 6
741 Vanya and Brackets Categories Codeforces Codeforces Round #308 (Div. 2) 6
742 LCIS Categories Codeforces Codeforces Beta Round #10 6
743 Arthur and Brackets Categories Codeforces Codeforces Round #288 (Div. 2) 6
744 Anfisa the Monkey Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 6
745 Maximum Sub-sequence Product Categories Live Archive 1996 Europe - Southeastern 6
746 Road Improvement Categories Codeforces Codeforces Round #302 (Div. 1) 6
747 Anya and Cubes Categories Codeforces Codeforces Round #297 (Div. 2) 6
748 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
749 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
750 Beaver Categories Codeforces Codeforces Beta Round #71 6
751 Minesweeper 1D Categories Codeforces Codeforces Round #237 (Div. 2) 6
752 New Year Domino Categories Codeforces Good Bye 2014 6
753 Common Palindrome Categories UVA 6
754 Special Matrices Categories Codeforces Codeforces Round #277.5 (Div. 2) 6
755 Least Common Multiple Categories Live Archive 2014 South Pacific 6
756 Maxim and Restaurant Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 6
757 Paint templates Categories SPOJ 6
758 Vladik and cards Categories Codeforces Codeforces Round #384 (Div. 2) 6
759 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
760 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 6
761 Dynamic Problem Scoring Categories Codeforces VK Cup 2017 - Round 3 6
762 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 6
763 Stripe 2 Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
764 Karen and Supermarket Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
765 Looking for Order Categories Codeforces Codeforces Beta Round #8 6
766 Snakes Categories A2 Online Judge 6
767 Jzzhu and Numbers Categories Codeforces Codeforces Round #257 (Div. 1) 6
768 Alternative Solution Categories Timus 6
769 Sort that Queue Categories Live Archive 2005 Africa/Middle East - Arab and North Africa 6
770 Array GCD Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 6
771 Pluses everywhere Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
772 EKG Categories Codeforces ABBYY Cup 3.0 6
773 Plants vs. Zombies HD SP Categories UVA 6
774 Wizards and Huge Prize Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 6
775 Okabe and El Psy Kongroo Categories Codeforces Codeforces Round #420 (Div. 2) 6
776 ACM Diagnostics Categories Timus 6
777 LIS of Sequence Categories Codeforces Codeforces Round #277 (Div. 2) 6
778 Substitutes in Number Categories Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 6
779 Palindrome Categories Codeforces MemSQL start[c]up Round 2 - online version 6
780 Decimation Categories Timus 6
781 Trains and Statistic Categories Codeforces Codeforces Round #353 (Div. 2) 6
782 Permutation Sum Categories Codeforces Codeforces Round #175 (Div. 2) 6
783 Train Categories Codeforces Codeforces Beta Round #68 6
784 Phone Talks Categories Codeforces VK Cup 2012 Qualification Round 1 6
785 Jill Rides Again Categories Live Archive 1997 World Finals - San Jose 6
786 Watching Fireworks is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
787 Pig and Palindromes Categories Codeforces Codeforces Round #316 (Div. 2) 6
788 Partial Teacher Categories Codeforces Manthan 2011 6
789 Mahmoud and a xor trip Categories Codeforces Codeforces Round #396 (Div. 2) 6
790 Segment Tree Categories SPOJ 6
791 Array Queries Categories Codeforces Educational Codeforces Round 19 6
792 Animals Categories Codeforces Codeforces Beta Round #35 (Div. 2) 6
793 Sonya and Problem Wihtout a Legend Categories Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 6
794 Martian Army Categories Timus 6
795 Salary for Robots Categories Timus 6
796 MagicNaming Categories TopCoder SRM 526.5 - Div2 hard] (14762) 6
797 Incrementing The Integer Categories SPOJ 6
798 Beautiful numbers Categories Codeforces Codeforces Beta Round #51 6
799 Yet Another Number Game Categories Codeforces Codeforces Round #173 (Div. 2) 6
800 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
801 Unusual Sequences Categories Codeforces Codeforces Round #450 (Div. 2) 6
802 The Top-Code Categories SPOJ 6
803 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
804 Game --- Mouse and Cheese Categories UVA 6
805 Fence Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
806 Demogorgon Categories URI 6
807 Buses Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
808 Longest Common Subsequence Categories SPOJ 6
809 Subsequences Categories Codeforces Testing Round #12 6
810 Ilya and Roads Categories Codeforces Codeforces Round #186 (Div. 2) 6
811 Solitaire Categories Codeforces Codeforces Round #130 (Div. 2) 6
812 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
813 Hamiltonian Spanning Tree Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 6
814 Dreamoon and Strings Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 6
815 Memory and Scores Categories Codeforces Codeforces Round #370 (Div. 2) 6
816 Random Task Categories Codeforces Codeforces Round #247 (Div. 2) 6
817 The Maths Lecture Categories Codeforces Codeforces Round #287 (Div. 2) 6
818 Numbers Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
819 Save the Python Programmers! Categories Live Archive 2010 North America - Pacific Northwest 6
820 Mystic Craft Categories SPOJ 6
821 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 6
822 Brainwashing Device Categories Timus 6
823 Fedor and Essay Categories Codeforces Codeforces Round #267 (Div. 2) 6
824 Two Strings Categories Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 6
825 Table Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
826 Shooting Gallery Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 6
827 Magic Numbers Categories Codeforces Educational Codeforces Round 8 6
828 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
829 Let's Play Osu! Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 6
830 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
831 Two out of Three Categories Codeforces Yandex.Algorithm 2011 Qualification 2 6
832 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 6
833 Sereja and Subsequences Categories Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 6
834 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
835 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 6
836 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 6
837 Coloring Brackets Categories Codeforces Codeforces Round #106 (Div. 2) 6
838 Duff in Beach Categories Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 6
839 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
840 Oil Skimming Categories A2 Online Judge 6
841 Summing Slopes Categories SPOJ 6
842 Eleven Categories UVA 6
843 Kindergarten Categories Codeforces Codeforces Round #276 (Div. 1) 6
844 Demiurges Play Again Categories Codeforces Codeforces Round #300 6
845 Palindromes Categories Codeforces Codeforces Beta Round #98 (Div. 2) 6
846 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 6
847 Group Projects Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 6
848 ???? ?? ?????? - 2 (round version) Categories Codeforces VK Cup 2015 - Round 1 6
849 Cunning Gena Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 6
850 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
851 AlgoRace Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
852 Beaver Game Categories Codeforces Codeforces Beta Round #70 (Div. 2) 6
853 New Year Letter Categories Codeforces Good Bye 2013 6
854 Insertion Sort Categories Codeforces Codeforces Round #212 (Div. 2) 6
855 Money for Nothing Categories Live Archive 2017 World Finals - Rapid City 6
856 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
857 Little Elephant and LCM Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
858 Game Categories Codeforces Codeforces Beta Round #46 (Div. 2) 7
859 Axis Walking Categories Codeforces Codeforces Round #191 (Div. 2) 7
860 Hongcow Buys a Deck of Cards Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
861 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
862 Vladik and chat Categories Codeforces Codeforces Round #390 (Div. 2) 7
863 First Digit Law Categories Codeforces Codeforces Beta Round #50 7
864 Colored Tiles Categories UVA 7
865 FibonacciKnapsack Categories TopCoder SRM 352 - Div1 medium] (10709) 7
866 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 7
867 Free Market Categories Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 7
868 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 7
869 Lost in Space Categories Timus 7
870 Cats Transport Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
871 Intellectual Inquiry Categories Codeforces CROC 2016 - Elimination Round 7
872 Devu and Birthday Celebration Categories Codeforces Codeforces Round #251 (Div. 2) 7
873 Game with Powers Categories Codeforces Codeforces Round #188 (Div. 1) 7
874 Painting The Wall Categories Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 7
875 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
876 Pictures with Kittens (hard version) Categories Codeforces Codeforces Round #521 (Div. 3) 7
877 Join Categories Timus 7
878 Lannister Army Categories SPOJ 7
879 LionAge II Categories Codeforces Codeforces Beta Round #66 7
880 Duckindromes Categories UVA 7
881 Education Reform Categories Codeforces Codeforces Beta Round #90 7
882 Longest Run on a Snowboard Categories Live Archive 2006 Asia - Coimbatore 7
883 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
884 Rent your airplane and make money Categories UVA 7
885 Brainfuck Categories Timus 7
886 Bulbo Categories Codeforces Bubble Cup 8 - Finals [Online Mirror] 7
887 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 7
888 Lunar Code Categories Timus 7
889 Kleofáš and the n-thlon Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 7
890 Top Secret Task Categories Codeforces Codeforces Round #327 (Div. 1) 7
891 Dot Categories Codeforces Codeforces Beta Round #63 (Div. 2) 7
892 Yet Another Assignment Problem Categories SPOJ 7
893 Phone Number Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
894 Transmitting Levels Categories Codeforces ZeptoLab Code Rush 2015 7
895 Table Tennis Categories UVA 7
896 Word Cut Categories Codeforces Croc Champ 2012 - Round 2 7
897 Lucky Number Representation Categories Codeforces Codeforces Round #206 (Div. 1) 7
898 Maxim and Matrix Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 7
899 Treeland Tour Categories Codeforces Codeforces Round #279 (Div. 2) 7
900 Divisor Tree Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 7
901 Martian Plates Categories Timus 7
902 Fence Divercity Categories Codeforces Codeforces Round #346 (Div. 2) 7
903 Famil Door and Roads Categories Codeforces Codeforces Round #343 (Div. 2) 7
904 Plus and xor Categories Codeforces All-Ukrainian School Olympiad in Informatics 7
905 Catch Sheep Categories SPOJ 7
906 Guess the Tree Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 7
907 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
908 Quest Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
909 Special Grid Categories Codeforces Codeforces Round #249 (Div. 2) 7
910 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
911 Name That Tune Categories Codeforces Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) 7
912 Captains Mode Categories Codeforces Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) 7
913 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 7
914 Sweets Problem Categories CodeChef 7
915 Genetic Engineering Categories Codeforces Rockethon 2014 7
916 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
917 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
918 Fafa and Ancient Mathematics Categories Codeforces Codeforces Round #465 (Div. 2) 7
919 Sereja and Two Sequences Categories Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 7
920 Yaroslav and Two Strings Categories Codeforces Codeforces Round #179 (Div. 2) 7
921 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
922 Component Testing Categories Live Archive 2012 North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA 7
923 Yet Another Answer Categories Timus 7
924 Product Sum Categories Codeforces Codeforces Round #344 (Div. 2) 7
925 Right Triangles Categories Codeforces Codeforces Testing Round #1 7
926 TheProgrammingContestDivOne Categories TopCoder SRM 502 - Div1 medium] (14431) 7
927 Little Artem and Random Variable Categories Codeforces VK Cup 2016 - Round 2 7
928 Lucky Numbers Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
929 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
930 Traffic Jams in the Land Categories Codeforces Codeforces Round #284 (Div. 1) 7
931 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 7
932 Levko and Strings Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 7
933 Changing a String Categories Codeforces Codeforces Beta Round #52 (Div. 2) 7
934 Valera and Fools Categories Codeforces Codeforces Round #216 (Div. 2) 7
935 Ralph and Mushrooms Categories Codeforces Codeforces Round #447 (Div. 2) 7
936 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
937 Two Longest Paths Categories UVA 7
938 Identify the Number Categories A2 Online Judge 7
939 On the Bench Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 7
940 Zip-line Categories Codeforces Codeforces Round #345 (Div. 1) 7
941 Segment Sum Categories Codeforces Educational Codeforces Round 53 (Rated for Div. 2) 7
942 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
943 Thief in a Shop Categories Codeforces Educational Codeforces Round 9 7
944 Optical Experiment Categories Codeforces Manthan 2011 7
945 Merry-go-round Categories Timus 7
946 Inna and Sequence Categories Codeforces Codeforces Round #220 (Div. 2) 7
947 Binary Table Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 7
948 Ann and Half-Palindrome Categories Codeforces Codeforces Round #311 (Div. 2) 7
949 Nanami's Digital Board Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 7
950 Pawn Categories Codeforces Codeforces Beta Round #40 (Div. 2) 7
951 Remembering Strings Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 7
952 Ant Man Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
953 Archer's Travel Categories Timus 7
954 Playing War Categories UVA 7
955 Darth Vader and Tree Categories Codeforces Codeforces Round #291 (Div. 2) 7
956 Beautiful Pairs of Numbers Categories Codeforces Codeforces Round #236 (Div. 1) 7
957 Coin Troubles Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 7
958 Hiking Categories Codeforces Codeforces Round #277.5 (Div. 2) 7
959 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 7
960 Maximum Questions Categories Codeforces Codeforces Round #450 (Div. 2) 7
961 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
962 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 8
963 Fibonacci Sums Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 8
964 Roads in Yusland Categories Codeforces Codeforces Round #352 (Div. 1) 8
965 Numbers Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 8
966 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
967 Bear and Floodlight Categories Codeforces Codeforces Round #226 (Div. 2) 8
968 Multicolored Marbles Categories Codeforces VK Cup 2012 Finals, Practice Session 8
969 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
970 E-The dynamic programming problem2 Categories TJU 8
971 Birthday Categories Codeforces Codeforces Round #282 (Div. 1) 8
972 The Minimum Number of Variables Categories Codeforces Codeforces Round #171 (Div. 2) 8
973 Mishka and Divisors Categories Codeforces Codeforces Round #365 (Div. 2) 8
974 Gifts Categories Codeforces Codeforces Round #142 (Div. 1) 8
975 Biathlon Track Categories Codeforces Codeforces Round #242 (Div. 2) 8
976 Find a car Categories Codeforces Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) 8
977 Drazil and Morning Exercise Categories Codeforces Codeforces Round #292 (Div. 1) 8
978 Vanya and Balloons Categories Codeforces Codeforces Round #355 (Div. 2) 8
979 Cows and Cool Sequences Categories Codeforces Codeforces Round #174 (Div. 1) 8
980 Frequent Flyer Card Categories Timus 8
981 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 8
982 Bombing Categories Codeforces Codeforces Beta Round #47 8
983 Yekaterinburg Subway Categories Timus 8
984 The Child and Polygon Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 8
985 Xenia and Dominoes Categories Codeforces Codeforces Round #199 (Div. 2) 8
986 Tourist Categories Codeforces All-Ukrainian School Olympiad in Informatics 8
987 Inventory Categories UVA 8
988 One-Based Arithmetic Categories Codeforces Testing Round #10 8
989 The Chocolate Spree Categories Codeforces Manthan, Codefest 16 8
990 Diverse Substrings Categories Codeforces Testing Round #9 8
991 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
992 Lucky Arrays Categories Codeforces Codeforces Round #156 (Div. 1) 8
993 Sereja and Intervals Categories Codeforces Codeforces Round #215 (Div. 1) 8
994 Jeff and Brackets Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 8
995 Bath Queue Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
996 Preorder Test Categories Codeforces 8VC Venture Cup 2016 - Final Round 8
997 Triangles Categories Codeforces Codeforces Beta Round #13 8
998 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
999 Greg and Caves Categories Codeforces Codeforces Round #179 (Div. 1) 8
1000 Balance Categories Codeforces Codeforces Beta Round #17 8
1001 Michael and Charging Stations Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 8
1002 Password Categories Codeforces Codeforces Beta Round #71 8
1003 Genetic engineering Categories Codeforces Yandex.Algorithm 2011 Round 2 8
1004 Gosha is hunting Categories Codeforces Codeforces Round #381 (Div. 1) 8
1005 Beads Categories Codeforces Codeforces Beta Round #8 8
1006 Flights for Regular Customers Categories Codeforces Codeforces Round #319 (Div. 1) 8
1007 Turtles Categories Codeforces Codeforces Round #202 (Div. 1) 8
1008 Progress Monitoring Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 8
1009 IT Restaurants Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 8
1010 Inversions problem Categories Codeforces Rockethon 2015 8
1011 Game with Strings Categories Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 8
1012 World of Darkraft - 2 Categories Codeforces Codeforces Round #265 (Div. 1) 8
1013 Antichain Categories Codeforces Codeforces Round #205 (Div. 2) 8
1014 An unavoidable detour for home Categories Codeforces Codeforces Round #418 (Div. 2) 8
1015 New Year Garland Categories Codeforces Codeforces Round #100 8
1016 Don't fear, DravDe is kind Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 8
1017 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
1018 Ostap and Tree Categories Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 8
1019 Vowels Categories Codeforces Codeforces Round #225 (Div. 1) 8
1020 Positions in Permutations Categories Codeforces Codeforces Round #175 (Div. 2) 8
1021 Bags and Coins Categories Codeforces Codeforces Round #207 (Div. 1) 8
1022 Maxim and Increasing Subsequence Categories Codeforces Codeforces Round #160 (Div. 1) 8
1023 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 8
1024 What Has Dirichlet Got to Do with That? Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
1025 Fractal Detector Categories Codeforces Codeforces Round #141 (Div. 2) 8
1026 Tree Categories Codeforces Codeforces Beta Round #23 8
1027 Somali Pirates Categories Timus 8
1028 Shaass the Great Categories Codeforces Codeforces Round #178 (Div. 2) 8
1029 Painting Square Categories Codeforces Codeforces Round #181 (Div. 2) 8
1030 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
1031 e-Government Categories Codeforces VK Cup 2012 Round 2 8
1032 Zublicanes and Mumocrates Categories Codeforces Codeforces Round #322 (Div. 2) 8
1033 Mausoleum Categories Codeforces Codeforces Round #Pi (Div. 2) 8
1034 Two Melodies Categories Codeforces Educational Codeforces Round 22 8
1035 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
1036 Linear Kingdom Races Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
1037 Sereja and Sets Categories Codeforces Codeforces Round #243 (Div. 1) 8
1038 Castle Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 8
1039 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 8
1040 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
1041 Name Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 8
1042 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
1043 Helping People Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 8
1044 Broken robot Categories Codeforces Codeforces Beta Round #24 8
1045 LCS Again Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 8
1046 Petya and Coloring Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) 8
1047 2048 Categories Codeforces Coder-Strike 2014 - Round 2 8
1048 Tower of Hanoi Categories Codeforces Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) 8
1049 Wilbur and Trees Categories Codeforces Codeforces Round #331 (Div. 2) 8
1050 Fibonacci army Categories Codeforces Unknown Language Round #2 8
1051 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
1052 Alex and Complicated Task Categories Codeforces Codeforces Round #267 (Div. 2) 8
1053 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
1054 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
1055 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 8
1056 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
1057 Smart Boy Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 9
1058 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
1059 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
1060 Faryuks Categories Timus 9
1061 Sandy and Nuts Categories Codeforces Codeforces Round #332 (Div. 2) 9
1062 Sereja and Squares Categories Codeforces Codeforces Round #187 (Div. 1) 9
1063 Half-decay tree Categories Codeforces Codeforces Beta Round #62 9
1064 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
1065 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
1066 Subarray Cuts Categories Codeforces Rockethon 2015 9
1067 Polycarp's Masterpiece Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 9
1068 Bear and Cavalry Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
1069 Rhombus Categories Codeforces Codeforces Round #161 (Div. 2) 9
1070 StackingBoxes Categories TopCoder SRM 261 - Div1 hard] (7995) 9
1071 Maze Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
1072 Binary Key Categories Codeforces Codeforces Round #193 (Div. 2) 9
1073 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
1074 Quick Tortoise Categories Codeforces Codeforces Round #144 (Div. 1) 9
1075 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
1076 Two Subsequences Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
1077 Power Defence Categories Codeforces Codeforces Round #115 9
1078 Wall Bars Categories Codeforces Codeforces Round #164 (Div. 2) 9
1079 Transferring Pyramid Categories Codeforces Codeforces Round #206 (Div. 1) 9
1080 Research Rover Categories Codeforces Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) 9
1081 Cowboys Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
1082 Flags Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1083 Black Widow Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 9
1084 Superhero's Job Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 9
1085 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
1086 Writing a Song Categories Codeforces Codeforces Beta Round #50 9
1087 Red and Black Tree Categories Codeforces Codeforces Round #221 (Div. 1) 9
1088 Gerald and Path Categories Codeforces Codeforces Round #313 (Div. 1) 9
1089 Representative Sampling Categories Codeforces ABBYY Cup 2.0 - Hard 9
1090 Tachibana Kanade's Tofu Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 9
1091 Road to Home Categories Codeforces Codeforces Round #374 (Div. 2) 9
1092 And Yet Another Bracket Sequence Categories Codeforces VK Cup 2015 - Round 1 9
1093 Berland Federalization Categories Codeforces Testing Round #10 9
1094 New Year Shopping Categories Codeforces Good Bye 2014 9
1095 Ksenia and Combinatorics Categories Codeforces Codeforces Round #224 (Div. 2) 9
1096 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 9
1097 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
1098 A Museum Robbery Categories Codeforces Codeforces Round #333 (Div. 1) 9
1099 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 9
1100 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1101 Moon Craters Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
1102 Simplified Nonogram Categories Codeforces Codeforces Round #298 (Div. 2) 9
1103 Hitchhiking in the Baltic States Categories Codeforces Codeforces Round #415 (Div. 1) 9
1104 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
1105 Transforming Sequence Categories Codeforces AIM Tech Round (Div. 1) 9
1106 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1107 Game with Points Categories Codeforces Testing Round #9 9
1108 Lostborn Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1109 Fibonacci String Subsequences Categories Codeforces Educational Codeforces Round 39 (Rated for Div. 2) 9
1110 Information Reform Categories Codeforces Codeforces Beta Round #64 9
1111 Four Divisors Categories Codeforces Educational Codeforces Round 12 9
1112 Maximum Waterfall Categories Codeforces Codeforces Round #165 (Div. 1) 9
1113 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 9
1114 Rectangles and Square Categories Codeforces MemSQL start[c]up Round 2 - online version 9
1115 Unambiguous Arithmetic Expression Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
1116 Valera and Number Categories Codeforces Codeforces Round #252 (Div. 2) 9
1117 Ciel and Flipboard Categories Codeforces Codeforces Round #190 (Div. 1) 9
1118 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
1119 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
1120 Largest Submatrix 3 Categories Codeforces Codeforces Round #239 (Div. 1) 9
1121 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
1122 Hanger Categories Codeforces Codeforces Beta Round #68 9
1123 Pasha and Pipe Categories Codeforces Codeforces Round #293 (Div. 2) 9
1124 Sequence of Balls Categories Codeforces Manthan 2011 9
1125 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 9
1126 Lesson Timetable Categories Codeforces Codeforces Beta Round #37 9
1127 Google Code Jam Categories Codeforces Codeforces Round #170 (Div. 1) 9
1128 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
1129 Random Function and Tree Categories Codeforces Codeforces Round #275 (Div. 1) 9
1130 Little Pony and Elements of Harmony Categories Codeforces Codeforces Round #259 (Div. 1) 9
1131 Pilgrims Categories Codeforces Codeforces Round #202 (Div. 1) 9
1132 Tavas in Kansas Categories Codeforces Codeforces Round #299 (Div. 1) 9
1133 The Great Julya Calendar Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1134 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
1135 Candy Store Categories Live Archive 2012 North America - Southeast USA 9
1136 Pudding Monsters Categories Codeforces Zepto Code Rush 2014 9
1137 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1138 Fox And Travelling Categories Codeforces Codeforces Round #290 (Div. 1) 9
1139 Singer House Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 9
1140 Strange Calculation and Cats Categories Codeforces Codeforces Round #329 (Div. 2) 9
1141 Colorful Stones Categories Codeforces Codeforces Round #162 (Div. 1) 9
1142 DFS Categories Codeforces Lyft Level 5 Challenge 2018 - Final Round 9
1143 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 9
1144 Dima and Figure Categories Codeforces Codeforces Round #167 (Div. 1) 9
1145 Game with Strings Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 9
1146 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
1147 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
1148 Polo the Penguin and Lucky Numbers Categories Codeforces Codeforces Round #177 (Div. 1) 9
1149 Shoe Store Categories Codeforces Codeforces Round #113 (Div. 2) 9
1150 Maxim and Calculator Categories Codeforces Codeforces Round #160 (Div. 1) 9
1151 Subarray Cuts Categories Codeforces Rockethon 2015 9
1152 Dreamoon and Binary Categories Codeforces Codeforces Round #272 (Div. 1) 9
1153 Xenia and String Problem Categories Codeforces Codeforces Round #207 (Div. 1) 9
1154 Crime Management Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) 9
1155 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
1156 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
1157 Triangles Categories Codeforces Codeforces Beta Round #15 9
1158 Yaroslav and Arrangements Categories Codeforces Codeforces Round #182 (Div. 1) 9
1159 Stairs and Lines Categories Codeforces Codeforces Round #284 (Div. 1) 9
1160 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 9
1161 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
1162 Roadside Trees Categories Codeforces Codeforces Round #162 (Div. 1) 9
1163 Steaks on Board Categories Timus 9
1164 Journey Categories Codeforces Codeforces Beta Round #53 9
1165 Dima and Game Categories Codeforces Codeforces Round #167 (Div. 1) 9
1166 Maximum Longest Increasing Subsequence Categories CodeChef 9
1167 Selling Numbers Categories Codeforces Codeforces Round #402 (Div. 1) 10
1168 Ada and Zoo Categories SPOJ 10
1169 Mutation Categories Codeforces All-Ukrainian School Olympiad in Informatics 10
1170 To Hack or not to Hack Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10
1171 Dynamic Programming Categories A2 Online Judge 10
1172 Vasily the Bear and Painting Square Categories Codeforces Codeforces Round #195 (Div. 2) 10
1173 Random Ranking Categories Codeforces Codeforces Round #183 (Div. 1) 10
1174 New Year Cactus Categories Codeforces Good Bye 2013 10
1175 Mod Mod Mod Categories Codeforces Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3) 10
1176 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
1177 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
1178 Longest Increasing Subsequence Categories Codeforces Codeforces Round #315 (Div. 1) 10
1179 Permanent Categories Codeforces Codeforces Round #268 (Div. 1) 10
1180 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
1181 Forward, march! Categories Codeforces Codeforces Beta Round #11 10
1182 Number of Binominal Coefficients Categories Codeforces Codeforces Round #323 (Div. 1) 10
1183 The Great Marathon Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
1184 Subsequences Return Categories Codeforces Codeforces Round #283 (Div. 1) 10
1185 Sequence Transformation Categories Codeforces Codeforces Round #172 (Div. 1) 10
1186 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
1187 Colored Jenga Categories Codeforces Codeforces Round #242 (Div. 2) 10
1188 Help Shrek and Donkey Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10
1189 Boolean Function Categories Codeforces Codeforces Round #323 (Div. 1) 10
1190 Kyoya and Train Categories Codeforces Codeforces Round #309 (Div. 1) 10
1191 Jzzhu and Squares Categories Codeforces Codeforces Round #257 (Div. 1) 10
1192 Days of Floral Colours Categories Codeforces Codeforces Round #431 (Div. 1) 10
1193 Kojiro and Furrari Categories Codeforces Codeforces Round #322 (Div. 2) 10
1194 School Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
1195 Sloth Categories Codeforces Codeforces Round #446 (Div. 1) 10
1196 Dynamic Shortest Path Categories Codeforces AIM Tech Round 4 (Div. 1) 10
1197 Digits of Number Pi Categories Codeforces Codeforces Round #325 (Div. 1) 10
1198 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
1199 Stock Trading Categories Codeforces Rockethon 2014 10
1200 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
1201 Simba on the Circle Categories Codeforces Educational Codeforces Round 4 10
1202 Inversions problem Categories Codeforces Rockethon 2015 10
1203 Cookie Clicker Categories Codeforces Codeforces Round #222 (Div. 1) 10
1204 Caramel Clouds Categories Codeforces Codeforces Round #426 (Div. 1) 10
1205 Longest Subsequence Categories Live Archive 2004 Asia - Manila 10
1206 Geometry Categories Live Archive 2005 Asia - Kolkata 10
1207 Counting Skyscrapers Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1208 Galaxy Union Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 10
1209 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10
1210 World Evil Categories Codeforces Codeforces Beta Round #58 10
1211 Combining Slimes Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 10
1212 Number Of ways Categories SPOJ 10
1213 An easy problem about trees Categories Codeforces MemSQL Start[c]UP 2.0 - Round 2 10
1214 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1215 Banners Categories Codeforces Zepto Code Rush 2014 10
1216 Buy One, Get One Free Categories Codeforces MemSQL start[c]up Round 2 - online version 10
1217 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
1218 #dynamic-programming&nbsp;(168)</span> Categories SPOJ 10
1219 Puzzle Lover Categories Codeforces Codeforces Round #339 (Div. 1) 10
1220 Numbers on the blackboard Categories Codeforces Codeforces Round #443 (Div. 1) 10
1221 Summer Reading Categories Codeforces Codeforces Round #217 (Div. 2) 10
1222 Dynamic Assignment Problem Categories SPOJ 10