Practice Programming Problems (1503)

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1 Monk and Greed H ... ... Graph Theory, Medium
2 Grizzly Circuit H ... ... Graph Theory, Medium
3 Monk and Hops H ... ... Graph Theory, Easy-Medium
4 Color the graph H ... ... Graph Theory, Easy-Medium
5 Tree query H ... ... Graph Theory, Easy
6 Permutation H ... ... Hard
7 Add Alternate Elements of 2-D... H ... ... Easy
8 Invert Case of Character H ... ... Medium
9 Short Name H ... ... Medium
10 Prime Number H ... ... Very-Easy
11 SumOn H ... ... Easy
12 Weighing the Stones H ... ... Easy
13 ZeroHero H ... ... Very-Easy
14 OddEve H ... ... Very-Easy
15 VowelPhobia H ... ... Very-Easy
16 Pallindrome H ... ... Very-Easy
17 Amit and Prime Numbers H ... ... Binary Search, Bitmask, Easy-Medium
18 Souvik and Permutations H ... ... Easy
19 Seating Arrangement H ... ... Very-Easy
20 COUNT NUMBERS H ... ... Very-Easy
21 Swapping Characters H ... ... Easy
22 Connected Permutations H ... ... Hard, Combinatorics, FFT, generating-functions, Algorithms
23 Retroactive Integers H ... ... Segment Trees, Matrices, Medium-Hard, Data Structures
24 Longest Paths in Tree H ... ... Medium, Algorithms
25 Minimal Popcount H ... ... Easy-Medium, Math, Simple-math
26 Ball Elimination H ... ... Dynamic Programming, Algorithms, Very-Easy
27 Even Sum H ... ... Implementation, Math, Easy-Medium
28 Little Monk's interviews H ... ... Graph Theory, Medium, Minimum Spanning Tree, Greedy
29 Rjit need leaves H ... ... Algorithms, Greedy, Easy-Medium
30 Little Monk and his toy-story H ... ... Math, Greedy, Easy-Medium
31 Little Monk and Library H ... ... Easy, Algorithms, Greedy
32 Competition H ... ... Medium, Dynamic Programming, Probability
33 Special Substrings H ... ... Medium
34 Submatrix Updates H ... ... Easy-Medium
35 Solitary String H ... ... Strings, Easy
36 Count the Matches H ... ... Easy
37 Canteen Logs H ... ... Medium
38 Little Shino And Swaps H ... ... Very-Easy
39 Chessboard and Dominoes H ... ... Implementation, Easy
40 Raees's Liquor Tank H ... ... Easy
41 Caesar's Cipher H ... ... Map, HashMap, Data Structures, Easy, approved
42 Palindrome H ... ... Data Structures, Algorithms, Very-Easy
43 Sahil's computer address H ... ... Implementation, Data Structures, approved, Easy
44 Confused Principal H ... ... Medium
45 War in 1D Kingdom H ... ... Hard
46 Student Selection H ... ... Easy-Medium
47 Micro and Mike H ... ... Segment Trees, Medium, Data Structures
48 Micro and Lucky Tree H ... ... Bitmask, Dynamic Programming, Algorithms, Medium
49 Micro and Array Function H ... ... Data Structures, Fenwick Tree, Medium
50 Micro and Matrix H ... ... Dynamic Programming, Algorithms, Medium
51 Micro and Sweet Distribution H ... ... Ad-Hoc, Data Structures, Easy-Medium
52 Micro and Array Update H ... ... Ad-Hoc, Data Structures, Very-Easy
53 Sanket and Laptops H ... ... Easy-Medium
54 Sanket and rose H ... ... Medium-Hard
55 Surojit with Balls H ... ... Easy
56 Lazy-Active vs Strict H ... ... maths, prime factorization, sieve, Medium
57 The Right One H ... ... Geometry, Implementation, Easy, Math
58 Non-coprime sequences H ... ... Hard
59 Favorite Subsequence H ... ... String Algorithms, Dynamic Programming, approved, Easy-Medium
60 It's Christmas. H ... ... Easy-Medium
61 Coloring a tree H ... ... Easy-Medium
62 Trystland rulers H ... ... Easy-Medium
63 A peaceful separation H ... ... Medium-Hard
64 Expected distance of point fr... H ... ... Medium
65 Daya,Doors and breaking H ... ... Very-Easy
66 Special Years H ... ... Medium
67 Vedansh and Fibonacci H ... ... Easy-Medium, Math
68 Strings Hate Zeroes H ... ... Medium-Hard
69 Monk missing home H ... ... Medium-Hard
70 Monk and Graph G H ... ... Medium
71 Monk meets Dynamic Array H ... ... Binary Search, Medium
72 Monk and Conversion Game H ... ... Easy-Medium
73 Lonely Monk H ... ... Easy-Medium
74 Monk and Digital World H ... ... Easy, strings, easy
75 Wacky Workouts H ... ... Very-Easy
76 Employee with the lowest salary H ... ... Very-Easy
77 Employee with the highest salary H ... ... Easy
78 Two points and a circle H ... ... Medium
79 Frontend library question H ... ...
80 C programmer test question H ... ...
81 To-do list H ... ...
82 The Productivity To-Do list H ... ... Easy-Medium
83 Euler's Exponents H ... ... Modular exponentiation, Medium
84 Find the term H ... ... Hard, Math
85 The suit life H ... ... Bit manipulation, Ad-Hoc, Medium
86 Subham and Binary Strings H ... ... Very-Easy
87 Curious Costs H ... ... Medium
88 The Tree H ... ... Medium
89 Don wants help H ... ... Medium
90 Little Shino and Contests H ... ... Very-Easy
91 Yet Another Valentine's Proposal H ... ... Easy-Medium
92 An Unfair Game H ... ... Easy-Medium
93 Chakde India H ... ... Very-Easy
94 Little Shino and Clicks H ... ... Very-Easy
95 Foosball Tournament H ... ... Easy-Medium
96 Arithmetic Progressions H ... ... Easy-Medium
97 Inverse Subarray H ... ... Segment Trees, Easy-Medium, approved, Two-pointer
98 Lexical Analyzer H ... ... Ad-Hoc, String Algorithms, approved, Easy
99 One mismatch H ... ... Data Structures, Hard
100 Minimum distance H ... ... Hard, Algorithms
101 Two paths H ... ... Algorithms, Medium-Hard
102 Strange order H ... ... Math, Easy-Medium
103 Cycle string H ... ... Dynamic Programming, Algorithms, Easy-Medium
104 Game H ... ... Dynamic Programming, Algorithms, Easy
105 Sum of Digits H ... ... Ad-Hoc, approved, Easy
106 Vowel Phelia H ... ... Implementation, String Algorithms, Two-pointer, Easy, approved
107 Party With Trees H ... ... Medium-Hard, Trees
108 Tree and Coprime Queries H ... ... Data Structures, Hard, Trees, Prime Factorization, Algorithms
109 Sonya and sticks H ... ... Dynamic Programming, Algorithms, Medium-Hard
110 Largest Windmill H ... ... Medium, Algorithms
111 Little Shino And Equation H ... ... Math, Easy-Medium
112 Happy and Sets H ... ... Combinatorics, Easy, Math
113 Destroy the machine H ... ... Very-Easy
114 Save the Kidney H ... ... Dynamic Programming, Medium
115 Circuit breaks Long into segm... H ... ... Hard
116 AISH AND XOR H ... ... Easy-Medium
117 TnP Thanksgiving Party H ... ... Very-Easy
118 Sherlock and Highways H ... ... Medium-Hard
119 Sherlock and Travelling H ... ... Medium
120 Sherlock and Subarrays H ... ... Medium-Hard
121 The Nim Game Ritual H ... ... Easy-Medium
122 Molly And Flame H ... ... Easy
123 Sherlock and Robots H ... ... Medium
124 Easy Question H ... ... Very-Easy
125 Valentine Time <3 H ... ... Very-Easy
126 Presidential Problem H ... ... Very-Easy
127 Prof. H.Pole and his Strict ... H ... ... Very-Easy
128 Matrix sum H ... ... Binary Search, Algorithms, approved, Easy-Medium
129 Innocent Swaps and His Emotions H ... ... Combinatorics, Modular exponentiation, approved, Math, Easy-Medium
130 Divisor Queries. H ... ... Data Structures, Number Theory, Easy-Medium, Math
131 Lexical Sorting Reloaded H ... ... Sorting, approved, Easy
132 Maximal Connection. H ... ... approved, Medium-Hard
133 Student Arrangement H ... ... Basic Programming, approved, Easy
134 Collecting Apples H ... ... Dynamic Programming, Easy-Medium, approved
135 Random Words H ... ... Sorting, Implementation, Easy, approved
136 Fibonacci substrings 2 H ... ... Dynamic Programming, Combinatorics, Algorithms, Medium-Hard, Fibonacci numbers
137 Space smugglers H ... ... Dijkstra, Medium, Algorithms, Shortest-path
138 Family competition H ... ... Segment Trees, Sorting, Fenwick Tree, Medium, Algorithms, Dynamic Programming
139 Gadget fan H ... ... Combinatorics, Easy-Medium, Math
140 Dorsplen H ... ... Algorithms, Easy
141 Exploring ruins H ... ... Algorithms, Greedy, Very-Easy
142 Faster than Flash H ... ... Easy-Medium
143 Employee Complaints Management H ... ... approved, Medium-Hard
144 Appropriate Partitioning H ... ... Implementation, Bitmask, Brute Force, Medium-Hard
145 Prove us Wrong! H ... ... Medium
146 Hector & Safe house H ... ... Easy-Medium, Easy
147 Area of Union of Rectangles H ... ... Easy
148 We love pirates! H ... ... Easy
149 "MONTY MONTY MONTY" H ... ... Easy
150 Spidey Mania Strikes Again H ... ... Easy-Medium
151 Love Triangle H ... ... Very-Easy
152 Skyler & Marie's Shoplifting H ... ... Easy
153 Monk and Palindromes H ... ... Medium, Disjoint Set
154 Friends And Foes H ... ... Disjoint Set, Easy-Medium
155 Marriage Problem H ... ... Disjoint Set, Easy-Medium
156 Teacher's Dilemma H ... ... Disjoint Set, approved, Easy
157 Count Friends H ... ... Disjoint Set, approved, Easy
158 Transaction H ... ... Segment Trees, Merge Sort, Data Structures, Medium-Hard, Binary Search
159 Convoluted Operations H ... ... Data Structures, Fenwick Tree, Compression, Easy-Medium
160 Share Market H ... ... Bitmask, Dynamic Programming, Algorithms, Medium-Hard
161 Little Shino and Pairs H ... ... Data Structures, Stack, Easy
162 Micro's House H ... ... Trie, Medium, Data Structures
163 Good String H ... ... Implementation, Ad-Hoc, Easy, Basic Programming
164 MINION TROUBLE H ... ... Medium
165 Killjee And Sequence H ... ... Medium-Hard
166 Nimxor and Bit-Strings H ... ... Easy-Medium
167 Mogu Loves Numbers H ... ... Easy
168 Katari and his love for Mex H ... ... Prime Factorization, Very-Easy, Very-Easy
169 Naughty Vineeth H ... ... Implementation, String Algorithms, Very-Easy, Very-Easy
170 Bishu and his Girlfriend H ... ... Very-Easy, Very-Easy
171 Can you Guess ? H ... ... Very-Easy, Very-Easy
172 Bishu and Soldiers H ... ... Binary Search, Brute Force, Very-Easy, Very-Easy
173 Monica and Gaming Obsession H ... ... Easy-Medium, Easy, Easy
174 Games With Shiva! H ... ... mathematics, Medium-Hard, Medium-Hard
175 Dangal with Shiva! H ... ... Mathematics, Easy, Easy
176 Twins Fight H ... ... Combinatorics, Easy, Math
177 Benny and Sum H ... ... Hard, Algorithms, Sqrt-Decomposition
178 Benny and String H ... ... Segment Trees, Medium-Hard, Data Structures, Medium-Hard
179 Benny and Some Magic H ... ... Medium, Algorithms, DFS, Medium
180 Benny and Candies H ... ... Algorithms, Easy-Medium, Greedy, Easy-Medium
181 Benny and GCD H ... ... Easy, Math, Easy
182 Ash and Obstacles H ... ... Implementation, Sorting, Easy, Easy
183 Batman and Tick-tack-toe H ... ... Implementation, Basic Programming, Ad-Hoc, Very-Easy
184 Boring Question H ... ... Very-Easy, Easy, Number Theory, Easy
185 Jarvis and Numbers H ... ... Very-Easy, Very-Easy
186 MR problem 1 H ... ... Very-Easy
187 Jarvis and Seven Segments H ... ... Ad-Hoc, ad-hoc, Very-Easy, Very-Easy
188 Monk and String Search H ... ... Set, Medium, Binary Search, String Algorithms, Hashing, Medium
189 Monk and Number Query H ... ... Hashing, Easy-Medium, Trees, Easy-Medium
190 The Monk and Prateek H ... ... Implementation, Hashing, Easy-Medium, Easy-Medium
191 Little Jhool and the matchmaker H ... ... Ad-Hoc, Hashing, Easy-Medium, Easy-Medium
192 The Monk and Kundan H ... ... Ad-Hoc, Easy, Hashing, Easy
193 Employee Details H ... ... Easy
194 Jarvis and Lone Integer H ... ... Basic Programming, Bitwise-xor, Easy, Easy
195 Saul Goodman's Problem Statement H ... ... Easy-Medium, Easy-Medium
196 Walter White's Special Compounds H ... ... Medium, Math, Number Theory, Medium
197 Harry Potter and the Deathly ... H ... ... Medium-Hard, Medium-Hard
198 Harry Potter and the Order of... H ... ... Medium-Hard, Medium
199 New Game H ... ... Very-Easy
200 Harry Potter and the Prisoner... H ... ... Easy-Medium, Easy-Medium
201 New Friends H ... ... Easy-Medium
202 Subsequences H ... ... Medium
203 String Queries H ... ... Data Structures, String Algorithms, approved, Easy-Medium
204 Overplay Your Hand H ... ... Medium
205 Cool numbers H ... ... Implementation, approved, Math, Easy-Medium
206 Fibonacci Numbers H ... ... Easy
207 Harry Potter and the Sorcerer... H ... ... BFS, Dijkstra, Easy, Easy
208 Mystery H ... ... Very-Easy, Number Theory, Very-Easy
209 SubString Divide H ... ... Implementation, Simple-math, Medium
210 Simple Function H ... ... Implementation, Math, Probability, approved, Easy
211 Colourful Toys H ... ... Greedy, Dynamic Programming, Math, Easy-Medium
212 Not So Simple Function H ... ... Binary Search, Data Structures, Medium-Hard
213 Candy Distribution H ... ... Math, Medium
214 One-Sized Game H ... ... Sorting, approved, Simulation, Easy-Medium
215 You get your Christmas gift! H ... ... Medium-Hard
216 Closest Gift H ... ... Very-Easy
217 Help Santa H ... ... Easy-Medium
218 Little Monk and Flip Operations H ... ... Bit manipulation, Graph Theory, Algorithms, DFS, Easy-Medium
219 Monk and Xor Tree H ... ... Graph Theory, Algorithms, DFS, Trees, Easy
220 Little Monk and Edge Count H ... ... Graph Theory, Algorithms, DFS, Easy-Medium
221 Monk and Graph Problem H ... ... Graph Theory, Algorithms, DFS, Easy
222 Monk Learning Graph H ... ... Graph Theory, Algorithms, Easy
223 Clean String H ... ... Medium-Hard
224 Elves and Dwarves on War H ... ... Medium
225 New Queries H ... ... Easy-Medium
226 Monk and BST H ... ... Data Structures, Trees, Easy-Medium
227 Little Monk and Swaps H ... ... Data Structures, Binary Search Tree, Easy-Medium
228 Monk and Tree Counting H ... ... Data Structures, Easy-Medium
229 Monk and Cursed Tree H ... ... Data Structures, Binary Search Tree, Easy-Medium
230 Monk watching fight H ... ... Data Structures, Binary Search Tree, Easy
231 Christmas queries H ... ... String Algorithms, Algorithms, Hard
232 Christmas tree H ... ... Algorithms, DFS, Medium-Hard
233 Christmas digits H ... ... Dynamic Programming, Algorithms, Medium
234 Christmas string H ... ... Easy-Medium
235 Play with Ranges! H ... ... Easy-Medium
236 Little Shino and Unique Students H ... ... Easy
237 Fredo and Interview Data H ... ... Easy-Medium
238 Counting stars H ... ... Combinatorics, approved, Math, Easy-Medium
239 Long ATM Queue H ... ... Data Structures, Greedy, approved, Easy
240 Vanya and Students 3rd time a... H ... ... Easy, math
241 Micro and Messages H ... ... Very-Easy
242 Monk Celebrating Checkpoint H ... ... Data Structures, Stack, approved, Medium
243 Monk and Number H ... ... approved, Math, Medium
244 Little Monk and Balanced Pare... H ... ... Data Structures, approved, Stack, Easy-Medium
245 Monk and New Array H ... ... Binary Search, Sorting, approved, Easy
246 Monk and Operations H ... ... Data Structures, approved, Easy
247 Monk and Lucky Minimum H ... ... Data Structures, approved, Easy
248 Permutation Intersections H ... ... Inclusion Exclusion, Dynamic Programming, approved, Medium-Hard
249 Jumping Tokens H ... ... ad hoc, approved, Medium
250 Grid Scramble H ... ... approved, Math, Medium
251 Triangle Game H ... ... Geometry, approved, Game Theory, Easy-Medium
252 GCD Strings H ... ... Recursion, Math, Easy
253 Longest Non-Decreasing Subarray H ... ... Data Structures, Dynamic Programming, Easy
254 Eat Or Not? H ... ... Data Structures, Easy
255 Write a checker ! H ... ... Data Structures, approved, Easy-Medium
256 Odd Even Pairs H ... ... Math, Easy
257 Monk and Fredo H ... ... Medium, Math, Medium
258 Monk and Divisible Numbers H ... ... Prime Factorization, approved, Modular exponentiation, Easy-Medium
259 Monk and Students H ... ... approved, Number Theory, Easy-Medium
260 Monk and Divisor Conundrum H ... ... Math, Easy
261 Monk and Square Root H ... ... approved, Math, Easy
262 Rhezo and his array H ... ... Data Structures, Hard
263 Good Subarrays H ... ... Data Structures, Medium-Hard
264 Rhezo and his birthday gift H ... ... Algorithms, Medium
265 Mojo, Jojo and Game H ... ... Algorithms, Easy-Medium
266 Rhezo and character frequency H ... ... Basic Programming, Easy
267 Digit Problem H ... ... Basic Programming, Very-Easy
268 The Close-i-ness H ... ... Easy
269 Study- Flyover H ... ... Easy-Medium
270 ML Test Practice H ... ... Very-Easy
271 Strange Creatures H ... ... Medium, Medium
272 Magical Word H ... ... Easy-Medium
273 The Demonetization Dilemma H ... ... Dynamic Programming, Algorithms, Medium, Medium
274 Zeus and Fibonacci H ... ... Segment Trees, Data Structures, Matrix Exponentiation, Hard
275 Utkarsh and Tiresome RMQ H ... ... Algorithms, Sqrt-Decomposition, Hard
276 GCD on a tree H ... ... Inclusion Exclusion, Math, DFS, Mobius Function, Medium
277 Factor Trees H ... ... Recursion, Dynamic Programming, Sieve, Math, Medium
278 Mike and Fraud H ... ... Math, Easy-Medium
279 Mike and GCD Issues H ... ... Ad-Hoc, gcd, Math, Easy
280 Fredo is in a Hurry H ... ... Ad-Hoc, Basic Programming, Easy
281 This is Code Apocalypse !!! H ... ... Medium-Hard
282 What's wrong with this CYPHER... H ... ... Dijkstra, Medium-Hard
283 String Fight H ... ... Easy-Medium
284 Rubik's Square H ... ... Easy-Medium
285 Simple Game H ... ... Sorting, Data Structures, Algorithms, Binary Search, approved, Easy-Medium
286 Sort me this way ! H ... ... Ad-Hoc, Data Structures, Sorting, Algorithms, approved, Easy
287 A Nightmare Quiz H ... ... Sieve, Math, Number Theory, Easy-Medium
288 Number game H ... ... hiring, approved, Data Structures, Easy-Medium
289 Maximum Rating H ... ... Easy
290 Little Shino and Elo Ratings H ... ... Medium
291 Min-Max H ... ... Basic Programming, Very-Easy
292 Sagar's Gift H ... ... Easy
293 Playful String H ... ... Easy
294 Maximum Chocolate H ... ... Easy-Medium
295 KillCode's Wish H ... ... Easy
296 Vanya and Students yet again !! H ... ... Very-Easy
297 Boring Game H ... ... Easy
298 War Begins H ... ... Easy-Medium
299 Monk and Order of Phoenix H ... ... Binary Search, Data Structures, Stacks, Medium
300 Little Monk and Goblet of Fire H ... ... Queue, Data Structures, approved, Easy-Medium
301 Monk and Prisoner of Azkaban H ... ... Data Structures, Stack, Easy
302 Monk and Chamber of Secrets H ... ... Queue, Data Structures, approved, recruit, Easy
303 Monk and Philosopher's Stone H ... ... Data Structures, Stack, approved, recruit, Easy
304 Addition ain't simple H ... ... Very-Easy
305 Micro and Assignment H ... ... Very-Easy
306 Sagar's Learning H ... ... Easy
307 Mr. Gora's Number H ... ... Medium-Hard
308 Deadpool Set H ... ... Easy-Medium
309 Palindrome Codiyapa H ... ... Easy-Medium
310 Game Time H ... ... Easy-Medium
311 Mr. Gora and his clever techn... H ... ... Medium
312 The exam H ... ... Easy
313 Registration system H ... ... Medium
314 Alice and rooks H ... ... Medium
315 Text editor H ... ... Hard
316 Furthest vertex H ... ... Medium-Hard
317 Iron man vs Captain America H ... ... Easy
318 killjee and balloons H ... ... Very-Easy
319 Anmol And Divisors H ... ... Easy-Medium
320 JP and the Escape Plan H ... ... Graph Theory, Recursion, DFS, Algorithms, Easy-Medium
321 Alice and her sequence H ... ... Algorithms, Math, Easy-Medium
322 Simple Game H ... ... Binary Search, Sorting, Easy
323 Confusion H ... ... Easy-Medium
324 Win-the-Game H ... ... Very-Easy
325 Guess H ... ... Very-Easy
326 Prime H ... ... Very-Easy
327 stringer H ... ... Very-Easy
328 Monk and Special Integer H ... ... Binary Search, Algorithms, Easy-Medium
329 Little Monk and Mountains H ... ... Binary Search, Algorithms, Easy-Medium
330 Monk and circular distance H ... ... Algorithms, Easy-Medium
331 Monk and Search H ... ... Binary Search, Easy, Easy
332 Monk Takes a Walk H ... ... Algorithms, searching, Very-Easy
333 Gaurav and Unique Edges H ... ... Medium
334 Aklank H ... ... Easy-Medium
335 Magical Islands H ... ... Easy-Medium
336 Perfect Matching H ... ... Dynamic Programming, Algorithms, Hard
337 Puzzled Grid H ... ... Binary Search, Algorithms, Medium-Hard
338 Palindromic Sum H ... ... FFT, Math, Medium-Hard
339 Edge Destruction H ... ... Graph Theory, Algorithms, Medium
340 Points on line H ... ... Data Structures, Medium-Hard
341 Connected Intervals H ... ... Graph Theory, Algorithms, DFS, Hard
342 N Div Tree H ... ... Graph Theory, Algorithms, Hard
343 Tree of Numbers H ... ... Dynamic Programming, Algorithms, Medium-Hard
344 Pebbles Game H ... ... Ad-Hoc, Data Structures, Easy
345 String Partitioning H ... ... Dynamic Programming, Algorithms, Medium-Hard
346 Monsters in Grid H ... ... Basic Programming, Medium
347 Xor thing H ... ... Graph Theory, Hard
348 Grovyle String H ... ... Very-Easy
349 Milly and the Magic Numbers H ... ... Bitmask, Algorithms, Easy-Medium
350 Simulate Network H ... ... Graph Theory, Sorting, Algorithms, Easy-Medium
351 Xor is Mad H ... ... Bit manipulation, Basic Programming, Easy
352 Good String H ... ... string, Easy
353 The Beatles H ... ... Prime Factorization, LCM, Math, Medium-Hard
354 Football teams H ... ... Binary Search, Disjoint Set, Dynamic Programming, Algorithms, DFS, Medium
355 Trustworthy network H ... ... Floyd Warshall, Dijkstra, Algorithms, Easy-Medium
356 Fibonacci substring H ... ... Combinatorics, Fibonacci, Math, Easy-Medium
357 Hibina H ... ... Math, Easy
358 Fruit shop H ... ... Math, Very-Easy
359 Digits and Fun H ... ... Medium
360 Monk being monitor H ... ... Sorting, Easy-Medium
361 Monk and Sorting Algorithm H ... ... radix sort, Sorting, Easy-Medium
362 Monk and Nice Strings H ... ... Easy
363 Monk and Suffix Sort H ... ... Sorting, Algorithms, Easy
364 Monk and Modulo Based Sorting H ... ... Sorting, Algorithms, Easy
365 Rank List H ... ... Easy
366 Hostel Visit H ... ... Easy
367 Naina Function H ... ... Easy
368 Monk and Rotation H ... ... Data Structures, Easy
369 Little Monk and Good String H ... ... Ad-Hoc, Basic Programming, String Algorithms, Easy
370 Monk and Inversions H ... ... Data Structures, Easy
371 Monk Teaches Palindrome H ... ... Data Structures, String Algorithms, Very-Easy
372 Monk and Welcome Problem H ... ... Data Structures, Very-Easy
373 House Travelling Problem H ... ... Greedy, Minimum Spanning Tree, Algorithms, Easy-Medium
374 XOR of Subarray H ... ... Ad-Hoc, Algorithms, Easy-Medium
375 Micro and Mini H ... ... Algorithms, String Algorithms, Suffix Arrays, Hashing, Easy-Medium
376 Vasya and Work H ... ... Data Structures, Math, Easy-Medium
377 Setting the Alarm H ... ... Easy-Medium
378 Tanjakan H ... ... Easy-Medium
379 Signal Range H ... ... Stack, Easy-Medium
380 Shil and Magic of Arrays H ... ... Sqrt-Decomposition, Math, Hard
381 Sum of Sums H ... ... Algorithms, DFS, Medium-Hard
382 Ways H ... ... Dijkstra, Algorithms, Medium
383 Shil and Lab Assignment H ... ... Matching, Math, Medium
384 Velma and Queries H ... ... Binary Search, Algorithms, DFS, Easy-Medium
385 Velma and Triplets H ... ... Ad-Hoc, Combinatorics, Implementation, Medium, Math, Easy
386 Mancunian in Palindromia H ... ... Basic Programming, Easy
387 Alice and Queries H ... ... Segment Trees, Sorting, Implementation, Data Structures, BIT, Easy
388 Alice and Pairs H ... ... Prime Factorization, Sieve, Math, Number Theory, Easy-Medium
389 Vasya and Mathematical Analysis H ... ... Sieve, Math, Number Theory, Easy-Medium
390 Micro and Optimus Prime H ... ... Math, Easy
391 Bob and Alphabet H ... ... Dynamic Programming, Algorithms, Medium
392 Albums H ... ... Binary Search, Math, Medium
393 Micro and his Son H ... ... Ad-Hoc, Data Structures, Easy
394 Annual Function H ... ... Medium
395 Easylife H ... ... Algorithms, DFS, Easy
396 phi-phi-phi H ... ... Math, Number Theory, Easy
397 Salesmen problem H ... ... Algorithms, Hungarian, Medium
398 K-th mean path H ... ... Data Structures, Fenwick Tree, Hard
399 Explorer's Birthday H ... ... Algorithms, Medium
400 Hamming H ... ... Algorithms, Easy
401 Computer Virus H ... ... Data Structures, Medium
402 Alice and wheel-graph H ... ... Algorithms, Medium-Hard
403 Shooting Range H ... ... Data Structures, Medium-Hard
404 Christmas shopping H ... ... Algorithms, Easy-Medium
405 Easy Money H ... ... Math, Easy-Medium
406 Courtney and convex polygon H ... ... Math, Hard
407 Alice and friends H ... ... Data Structures, Segment Trees, Hard
408 Shootout in London H ... ... Sieve, Math, Easy
409 XOR-Split! H ... ... Gaussian Elimination, Dynamic Programming, Medium
410 Mike's visit to a Black Hole H ... ... Combinatorics, Dynamic Programming, CRT, Medium
411 Gotta Catch 'Em All H ... ... Prime Factorization, Sorting, Easy
412 Vanya and Students again ! H ... ... Very-Easy
413 The Wealthy Landlord H ... ... Math, Easy
414 Vanya and Students H ... ... Very-Easy
415 BlackHat_Test H ... ... string manipulation, Easy
416 Make Groups H ... ... Medium
417 Users and Ratings H ... ... Medium
418 Cake Cutting H ... ... Math, Easy
419 Micro and Courses H ... ... Very-Easy
420 Ryotsu loves Primes H ... ... Basic Programming, Sieve, Math, Easy
421 Traveling Swamp Thing Problem H ... ... Dynamic Programming, Easy-Medium
422 Alex Magic Product H ... ... Modular arithmetic, Simple-math, Easy
423 Special Graph H ... ... Math, Medium
424 Prime Numbers H ... ... Math, Shortest-path, Easy-Medium
425 Benny and Balls H ... ... Implementation, Basic Programming, Medium
426 Byteland Trip H ... ... Floyd Warshall, Binary Search, Algorithms, Medium
427 Boring Marathon H ... ... Math, Easy-Medium
428 Counting In Byteland H ... ... Data Structures, Fenwick Tree, Easy-Medium
429 Closing Ceremony at Lolympics H ... ... Dynamic Programming, Algorithms, Simple-math, Medium
430 Gold at Lolympics H ... ... Prime Factorization, Dynamic Programming, Game Theory, Math, Easy-Medium
431 The Best Player H ... ... Basic Programming, Brute Force, Sorting, Easy
432 Vasya vs Rhezo H ... ... Data Structures, Easy-Medium
433 Awesome Sequence H ... ... Binary Search, Recursion, Dynamic Programming, Math, Easy-Medium
434 Beer And Strings H ... ... Very-Easy
435 A Complex Matrix Count H ... ... Ad-Hoc, Algorithms, Easy-Medium
436 Matt's Graph Book H ... ... Algorithms, Easy
437 Stranger Things H ... ... Easy-Medium
438 Micro and Challenge H ... ... Medium
439 Buy and Sell ! H ... ... Data Structures, Easy-Medium
440 Binary Queries H ... ... Very-Easy
441 Childhood Games H ... ... Easy
442 Open the locks H ... ... Dynamic Programming, Easy-Medium
443 Almost Pallindrome H ... ... Easy-Medium
444 Bear Roars H ... ... Geometry, Math, Medium-Hard
445 Oz's new problem H ... ... Combinatorics, Math, Hard
446 Adjacent Swaps H ... ... Binary Search, String Algorithms, Algorithms, Suffix Arrays, Hashing, Medium
447 Akash and GCD 2 H ... ... Segment Trees, Fenwick Tree, Number Theory, Data Structures, Math, Medium
448 Micro and Binary Strings H ... ... Bit manipulation, Basic Programming, Easy
449 A huge sum H ... ... Sieve, Math, Number Theory, Hard
450 Fun with strings H ... ... Suffix Trees, Suffix Arrays, LCP, Medium-Hard
451 Street racing H ... ... Algorithms, Medium
452 Rescuer H ... ... Algorithms, Easy-Medium
453 Fredo and Large Numbers H ... ... Ad-Hoc, Data Structures, data compression, Easy-Medium
454 Mishki Playing Games H ... ... Ad-Hoc, Basic Programming, Easy
455 Print hackerearth H ... ... Basic Programming, Very-Easy
456 Hexxagon H ... ... Very-Easy
457 Micro and Tree H ... ... Data Structures, Dynamic Programming, Medium
458 Vanya and Array H ... ... Ad-Hoc, Data Structures, BIT, Sorting, Easy-Medium
459 Fredo and Modified Notificati... H ... ... Ad-Hoc, Data Structures, Sorting, Easy-Medium
460 Lucky Digits and Modulo H ... ... Lucky-Digit, Simple-math, Math, Easy
461 Perfect Permutations H ... ... Combinatorics, Dynamic Programming, Math, Hard
462 Maximum Safety H ... ... Medium-Hard
463 KGCD H ... ... Math, Medium
464 Sightseeing Walk H ... ... DFS, Easy-Medium
465 Super String H ... ... Easy
466 Breaking Primes H ... ... Binary Search, Sieve, Math, Easy-Medium
467 Timely Orders H ... ... Binary Search, Data Structures, Easy
468 Bob and Mathematics H ... ... Medium-Hard
469 Xoring in Base 10 H ... ... Meet-in-the-middle, Algorithms, Medium-Hard
470 Unique Subarrays H ... ... Implementation, Data Structures, Hard, Medium
471 Playful Strings H ... ... Implementation, Easy
472 The Dragon Type H ... ... Number Theory, Medium
473 The Ghost Type H ... ... Bitmask, Dynamic Programming, Algorithms, Medium
474 The Psychic Type H ... ... Implementation, Ad-Hoc, Basic Programming, Easy
475 The Electric Type H ... ... Map, Set, Data Structures, Easy-Medium
476 The Grass Type H ... ... Map, Disjoint Set, Trees, Data Structures, Medium-Hard
477 The Normal Type H ... ... Set, Rolling Pointer, Easy-Medium
478 N-Queens H ... ... Backtracking, Easy
479 Ash and shopping H ... ... FFT, Divide And Conquer, Generating Functions, Medium-Hard
480 Kevin and Sticks H ... ... Math, Greedy, Medium
481 Destroying houses H ... ... Geometry, Expectation, Probability, Easy-Medium
482 Killing Assistants H ... ... prob, Math, Easy-Medium
483 Dual issues H ... ... Prime Factorization, easy, Math, Easy
484 Ticket Counter H ... ... Hard
485 Joseph and String H ... ... Segment Trees, String Algorithms, Strings, Suffix Arrays, Data Structures, Hard
486 Nick and JosephLand H ... ... Data Structures, Trees, Medium-Hard
487 Greedy chairman H ... ... Combinatorics, Modular arithmetic, Trees, Medium
488 Joseph and Array H ... ... Combinatorics, Modular arithmetic, Math, Easy-Medium
489 Joseph and Tree H ... ... Data Structures, Trees, Segment Trees, Medium
490 Powers Everywhere! H ... ... Implementation, Data Structures, Binary Search, Math, Easy
491 Milly and pens H ... ... Implementation, Hashing, Data Structures, Easy
492 Milly and special subarrays H ... ... Math, Easy-Medium
493 Mancunian And Fantabulous Genes H ... ... String Algorithms, Hashing, Medium
494 Mancunian And Nancy Play A Game H ... ... Graph Theory, Medium
495 Mancunian And Multiplicative ... H ... ... Sqrt-Decomposition, Medium
496 Mancunian Goes To The Derby H ... ... Graph Theory, Easy-Medium
497 Mancunian And Colored Tree H ... ... Trees, Easy
498 Mancunian And Naughty Numbers H ... ... Number Theory, Easy
499 Milly and equal array H ... ... Math, Number Theory, Easy-Medium
500 Interval count H ... ... Math, Number Theory, Easy
501 Final battle H ... ... Hard
502 Benny and the universal numbers H ... ... Dynamic Programming, Medium-Hard
503 Little Achraf in Who Wants to... H ... ... Medium-Hard
504 Benny and the Universe H ... ... Medium-Hard
505 Little Shino and the Fibonacc... H ... ... Easy-Medium
506 Little Shino and the tournament H ... ... Easy-Medium
507 Little Shino and the coins H ... ... Easy
508 Rhezo and Cinema Hall H ... ... Combinatorics, Data Structures, Dynamic Programming, Easy-Medium
509 JP and rotations H ... ... Ad-Hoc, Data Structures, Easy
510 Mark The Answer H ... ... Data Structures, Easy
511 Divisible Digits H ... ... Hard
512 Covering Chessboard H ... ... Medium-Hard
513 Balanced Buildings H ... ... Easy-Medium
514 Assorted Arrangement H ... ... Algorithms, Greedy, Easy
515 Fredo's Crush H ... ... Bitmask, Graph Theory, Dynamic Programming, Medium
516 Fredo and his Birthday Gift H ... ... Bitmask, Graph Theory, Dynamic Programming, Medium
517 Micro and Permutations H ... ... Graph Theory, Very-Easy
518 Micro and Coins H ... ... Graph Theory, Very-Easy
519 Vasya and Party! H ... ... Data Structures, Graph Theory, DFS, Easy
520 Milly and Chocolates again H ... ... Binary Search, Data Structures, Easy-Medium
521 Encounter with the Lord H ... ... Graph Theory, Bipartite Graph, Medium-Hard
522 The String Monster H ... ... Algorithms, Monthly-Contest, Easy-Medium
523 Gudi and the Magical Orbs H ... ... Dynamic Programming, Medium
524 Gudi trapped in the Room H ... ... DFS, Easy
525 The Castle Gate H ... ... Bit manipulation, Very-Easy
526 Micro and Prime Prime H ... ... Sieve, Data Structures, Easy
527