Tags: Show Tags. "Unable to parse markup [type=CF_MARKDOWN]"- Is this the actual post or is the link broken?? Skip to main content Switch to mobile version Search PyPI Search. There are some problems that have very nice randomized solutions, and sometimes they aren't the intended solutions, but I believe randomization can sometimes be very powerful and interesting. I submitted some problems on live archive a few days ago, but still status in judge queue. (Sorry for bad english). http://codeforces.com/contest/120/problem/D (3) //But maybe work naively ?! Grouping is also done because there are significant changes in my programming style over time. http://www.spoj.com/problems/CHAIR/ (3) //Maybe combinatorics too? 7988 Flow Shop (3) //Do as they say. 2) and Technocup 2021 — Elimination Round 3, Codeforces WatchR: 10K+ downloads on Google Play, A new cf update that you may haven't notice, Invitation to CodeChef December Cook-Off 2020. Solution of competitive programming problems, code templates, Data Structures and Algorithms, hackathons, ... Add a description, image, and links to the codeforces topic page so that developers can more easily learn about it. Most have easily-reachable nice tutorials, but some do not, and some tutorials are much better than others, so I believe it'll be nice if there's like a list of high-quality tutorials per topic, along with short comments if needed. ), Unfortunatelly it is not much possible imho :'(. Hints would probably be more appreciated though, seems like an interesting problem. ... Codility.com, CodeForces.com, etc. Codeforces Problem's Solution. I've been asked to make some topic-wise list of problems I've solved. Codeforces. Finally if you would like to add some problem to the list — even though I would be glad, please do so only in case of: It is very interesting. I love solving problems from CF so when I open any category I search for CF problems and start solving them. Pair of Topics. :), That's what we're trying to do https://e-maxx-eng.appspot.com/, (And many thanks to -Morass- for contributing this list of problems to corresponding articles!). Thanks! But as it is stated — it is my opinion so it might be "a little bit" off :), I find it funny that there is a topic "oeis". Repository of solutions of various competitive programming problems solved on Codeforces and AtCoder. Topic Stream 3: TBD. The new discount codes are constantly updated on Couponxoo. 1, Div. Let's Break Codeforces Problem Set and Brush Up our coding skills as well! To all my Indian juniours and experienced professionals, Never join Scaler Academy(Interviewbit). not much sure now — yet imho firstly there is some check with "L" parameter... and then probably getting "MEX" (minimal unused value). I have been trying to find good problems to solve and from last 3 days your blog was having an error and gosh it is up again. Can you please tell what are the problems from LA are?? Error, this is a private paste. EAT CODE SLEEP REPEAT. Isn't the graph in the form of a forest, with each tree having only one cycle? http://codeforces.com/contest/37/problem/C (4) //NICE — Prefix dictionary [or math], http://codeforces.com/gym/101628/problem/K (5) //[NICE][IMPLEMENTATION], 8015 — Alice and Bob play Contact (5) //[VERY NICE] 1stBob, http://www.spoj.com/problems/TRYCOMP/ (4), 10860 UVA (4) //DP + Trie [nice — slightly generic], http://www.spoj.com/problems/DICT/ (4) //Sample trie — but slightly weak/wrong data-set, https://www.urionlinejudge.com.br/judge/en/problems/view/2810 (5) //[NICE][DOUBLE], Gym 100818E [2015-2016 ACM-ICPC Southeastern European Regional Programming Contest (SEERC 2015)]. ), http://www.spoj.com/problems/PAINTWAL/ (6) //VERY NICE — Imho hard (opti could beat), http://www.spoj.com/problems/ADFRUITS/ (3) //Very simple (substring == subsequence), http://www.spoj.com/problems/MAIN113/ (2) //NICE but somehow too low constraints, http://www.spoj.com/problems/MAIN112/ (4) //NICE — Bitmask, http://codeforces.com/contest/864/problem/E (5) //VERY NICE — Sort, http://www.spoj.com/problems/NOVICE63/ (4) //NICE -On digits (binary), http://www.spoj.com/problems/TUG/ (3) //NICE + Observation {N>100 == YES}, http://www.spoj.com/problems/DOMINO1/ (4) //Used map to solve it, http://www.spoj.com/problems/NY10E/ (2) //Easy dp, http://www.spoj.com/problems/MAIN72/ (3) //Easy knapsack, http://www.spoj.com/problems/NOVICE43/ (2) //Unbelievably low constraints, http://codeforces.com/contest/598/problem/E (4) //N^5 strategy works fine [VERY NICE]. Login; Register; User Editorials : Search Friends ... Leaderboard: Trending Problems: Submission Filters: Testimonials: Feature Updates: Find Me Problems. Ok... never came across the acronym before :).Thnx for the prompt reply. is problem set arranged in order of ascending difficulty? So find some way to learn them. http://www.spoj.com/problems/KSMALL/ (5) //fast sort /or/ quick-select, http://www.spoj.com/problems/RKS/ (3) //use map, http://www.spoj.com/problems/SPCJ/ (4) //reverse + go from back, http://codeforces.com/contest/785/problem/B (2) //last-first + vice versa, http://codeforces.com/contest/798/problem/D (4) //Take 1st then take best B of every pair (sort by A), http://codeforces.com/contest/810/problem/B (2), http://codeforces.com/contest/810/problem/C (3) //+Math, http://codeforces.com/contest/814/problem/A (1) //Pro prváky — but nice observation, http://codeforces.com/contest/817/problem/B (3) //Frequency of TOP 3, http://codeforces.com/contest/831/problem/C (3) //NICE ~ Check all "add" against first, http://codeforces.com/contest/831/problem/D (4) //Can be solved with BS+Max-Match, http://codeforces.com/contest/841/problem/C (3) //NICE — match greatest to lowest, http://codeforces.com/contest/845/problem/C (2) //EASY — pro prvaky, http://www.spoj.com/problems/HSHW/ (4) //Test every big/low pair + big/big low/low on +/-, http://www.spoj.com/problems/CODESPTB/ (3) //Count inversions [BASIC], http://codeforces.com/contest/863/problem/B (2) //Sort and omit 2, http://www.spoj.com/problems/AMR10G/ (2) //Easy yet NICE, http://codeforces.com/contest/12/problem/C (2) //Very simple, http://codeforces.com/contest/16/problem/B (1) //[EASY], http://codeforces.com/contest/22/problem/D (3) //Sort by begin + sweep, http://codeforces.com/contest/23/problem/C (3) //Take them by pairs + add last, http://codeforces.com/contest/24/problem/B (3) //Simple follow the rules, http://codeforces.com/contest/27/problem/B (3) //Compare number of victories, http://codeforces.com/contest/27/problem/C (4) //[NICE] Find next bigger/lesser (sort), https://www.urionlinejudge.com.br/judge/en/problems/view/2683 (3) //[BASIC][MAXIMUM], http://codeforces.com/contest/908/problem/F (5) //[VERY NICE] //Not exactly MST but similar[GREEDY], http://codeforces.com/contest/125/problem/E (5) //[BS], http://codeforces.com/contest/76/problem/A (4) //[VERY NICE] Sort by A and KEEP spanning + one edge, LA 6622 — Absurdistan Roads (4) //Plus one edge, https://www.hackerrank.com/contests/june-world-codesprint/challenges/johnland, Gym 101252C [2014-2015 CT S02E05: Codeforces Trainings Season 2 Episode 5 — 2009-2010 ACM-ICPC], https://www.codechef.com/problems/CHEFELEC, http://codeforces.com/problemset/problem/598/D, http://codeforces.com/problemset/problem/32/C, http://codeforces.com/problemset/problem/744/A, https://devskill.com/CodingProblems/ViewProblem/344, 11183 UVA (4) //Directed [need to know algo! ), http://codeforces.com/contest/797/problem/E (4) //NICE: Almost BF-able (but care of low K), http://codeforces.com/contest/793/problem/D (3) //NICE & EASY: begin/end/actual/USED, http://codeforces.com/contest/803/problem/E (4) //State search — many IF's (EASY), http://codeforces.com/contest/805/problem/F (7) //NICE: DP on tree + fast BF + hack. 2) 36:28:50 Register now » *has extra registration → Filter Problems Difficulty: — Add tag. Pretty neat. The latest ones are on Nov 28, 2020 Codeforces. hey, Can somebody help me with this problem Ada and Zoo, I would recommend you to take peek onto Steiner's Tree -> That shall be a great start ^_^. Firstly, this is HARD KIND of question, since it is not directly on CP but slightly on "psychology"/"learning" which might be different for different people (so question is whether programmers are the right people to answer this question). I will definitely use this to structure my training. Even though many people undeestimate this, it is very important to get to phase where you can code what you know (well, it might sound stupid, but many times one know a solution one hour before end of contest, yet he ends coding 10 minutes before end when he starts his 20 minute debugging phase [and both could be significantly reduced]). You can easily go through the editorial link to see the editorial, which is placed at the right bottom corner of the problem page. So please everyone that have a collection of Graphs Problems (DFS,BFS,LCA,Dijkestra,...) Share that with me. [not sure if grd poss. Why do you have two "Zfunction" tags? BTW Thanks -Morass-, The only programming contests Web 2.0 platform, 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules), Technocup 2021 Elimination Round 3 and Round #692 (Div. Is there something to take into account for getting a faster solution. http://www.spoj.com/problems/FACTMULN/ (5) //each f[i]/c[i] separately, http://www.spoj.com/problems/SPCM/ (4) //just factorisation + prime check (10^12), http://www.spoj.com/problems/TWOGAME/ (5) //gcd == Power of 3 => YES, http://www.spoj.com/problems/MKEQUAL/ (2) //Chceck if sum is divisible by N. http://www.spoj.com/problems/TIPTOP/ (3) //sqrt(N)==N? I appreciate all of the div 1 codeforcers helping out the rest of us! Kindly if anyone has such problems, post them too. Some problems mighthave number next_to them, which is estimated difficulty, but it is just "a very wild guess" :). 7-day free trial. http://www.spoj.com/problems/ACPC10D/ (3) //NICE — DAG traversal, http://www.spoj.com/problems/CPCRC1C/ (4) //Digits dp (return pair), http://www.spoj.com/problems/BORW/ (3) //Inc+Dec sequence (small array), http://codeforces.com/problemset/problem/16/E (5) //Bitmask [NICE], http://codeforces.com/problemset/problem/18/E (5) //VERY NICE {no need for second iteration}, http://codeforces.com/contest/2/problem/B (5) //NICE — 2/5 are in-fact independent, http://codeforces.com/contest/4/problem/D (3) //Classical [FW works too] XY > xy, http://codeforces.com/contest/6/problem/D (4) //NICE (N^4), http://codeforces.com/contest/321/problem/E (7) //VERY NICE — D&C Trick, http://codeforces.com/contest/868/problem/F (8) //VERY VERY NICE D&C Trick — With MO Principal, http://codeforces.com/contest/8/problem/C (5) //NICE — Masks [N*2^N], http://codeforces.com/contest/868/problem/E (8) //VERY NICE — HARD — on tree, http://codeforces.com/contest/10/problem/D (4) //LCIS [NICE], http://codeforces.com/contest/13/problem/C (5) //NICE [sorting][only elements from array], http://codeforces.com/contest/17/problem/C (5) //[NICE][iterative-sparse][+idea], http://codeforces.com/contest/19/problem/B (4) //Knapsack (after good look), http://codeforces.com/contest/30/problem/C (4) //Probabilities + (slight)GEO, http://codeforces.com/contest/31/problem/E (4) //[NICE], http://codeforces.com/contest/41/problem/D (4) //With printing, https://www.spoj.com/problems/CONSEC/ (4) //[NICE][OFFLINE], https://codeforces.com/gym/102006/problem/C (4) //[NICE][BRUTE-FORCE], http://codeforces.com/gym/101962/problem/J (5) //[VERY NICE][TREE-FAT][SPARSE], http://codeforces.com/contest/915/problem/F (6) //[VERY NICE][SORTING], http://codeforces.com/contest/141/problem/E (6) //[NICE][SPANNIG TREE], 7903 — Pandaria (7) //[VERY NICE][DSU][SORTING][MERGE][DFS], http://codeforces.com/contest/110/problem/E (4) //[NICE][COMBINATORICS][TREE], http://codeforces.com/contest/90/problem/E (5) //[NICE][DSU-LIKE-LINKS][SIMULATION], http://codeforces.com/contest/87/problem/D (5) //[VERY NICE][SORTING][COMPRES][DFS], http://codeforces.com/contest/884/problem/E (5) //[VERY NICE][MEMORY SPARSE], http://codeforces.com/contest/60/problem/D (6) //[NICE][Pythagorean Triples][Gen over max! Hi, I am working on problem of codeforces. 840D - Destiny is a nice example of a tricky wavelet tree. you can brute-force small test-cases only and then "google the rest" .. NICE & EASY, http://codeforces.com/contest/817/problem/C (3) //Check S+Constant (NICE! Have any list of problems set of link cut tree? Well, can You please help me out with one more issue, when I try to register to icpcarchive.ecs.baylor.edu, it gives me this error, how to fix it? http://codeforces.com/contest/820/problem/B 3 //Polygon angle find! Help needed from participants with rating up to 1500, Help me to find out the right approach of this code, The 'science' of training in competitive programming. Bitsets + Detect + XOR, http://codeforces.com/contest/844/problem/D (5) //NICE! Max-Clique, 7743 — Cliques (Similar to ADAPARTI) (8) //Parametrisation, 7616 Counting Cliques (4) //[NICE][CLIQUES][ELIMINATING-SETS], https://codeforces.com/contest/1181/problem/A (2) //[EASY][FORMULA][MODULO], https://www.spoj.com/problems/PRADIPSUM/ (2) //[EASY][FORMULA], http://codeforces.com/contest/729/problem/B 2, http://codeforces.com/contest/710/problem/C 4, http://www.spoj.com/problems/JOCHEF/ (5) //NICE: Lagers rectange 0/1 O(N*M), http://www.spoj.com/problems/ADAGCD/ [+STL], https://codeforces.com/contest/1175/problem/A (2) //[EASY][SYMPATHIC][DIVISION], https://codeforces.com/contest/1203/problem/C (3) //[NICE][GCD], https://devskill.com/CodingProblems/ViewProblem/553 (3) //[VERY NICE][SIMPLE], https://devskill.com/CodingProblems/ViewProblem/560 (2), https://codeforces.com/contest/1176/problem/B (2) //[MODULO][GREEDY], https://codeforces.com/contest/1200/problem/C (4) //[VERY NICE][GCD][LCM], https://codeforces.com/contest/1182/problem/A (2) //[EASY][DP], https://atcoder.jp/contests/abc136/tasks/abc136_b (2) //[IMPLEMENTATION][CONVERSION], https://codeforces.com/contest/1185/problem/A (1), https://codeforces.com/contest/1198/problem/F (6) //[VERY NICE][RANDOM][FACTORISATION][PRIME][GCD], https://codeforces.com/contest/1183/problem/B (2) //[EASY][FORMULA][MIN/MAX], https://codeforces.com/contest/1187/problem/A (1) //[EASY][FORMULA], https://codeforces.com/contest/1195/problem/B (2) //[EASY][GAUSS][BRUTE], https://codeforces.com/contest/1189/problem/E (5) //[INVERSION][STL], https://www.spoj.com/problems/CANPR/ (5) //[NICE][MOBIUS] Weird TC (weak? https://icpc.kattis.com/problems/airport //Proposed by .__. LCA? 13170 UVA (7) //heavy implementation — but NICE! [Beta] Harwest — Git wrap your submissions this Christmas! Sometimes there is much better solution then you came with, sometimes there is something awesome (like algorithmic/or/language trick) which might simplify your futher coding. Solve problem B's from consecutive CF rounds. No clue how the problem tag you mentioned, of DAG, would help. On a separate note, I believe it'll nice if each topic has its list of tutorials too. Problem setters: vovuh. hi and thanks for amazing blog post -Morass-. 3) 11:15:45 Register now » → Streams Round #686 (Div. This is when I gave up the idea of quitting! Usually, find some good blod (codeforces/geeksforgeeks/some school's lectures/so on..). Site: CodeForces: Links: Problem. Maths--- Problem related to mathematics are quite common in the domain of competitive programming.It involved topics like geometry, algebra, discrete mathematics and probability. http://www.spoj.com/problems/CCHESS/ //Dijkstra, http://codeforces.com/problemset/problem/630/H //[ROOKS][BIG][COMBINATORICS], LightOJ 1005 //As above (but with real rooks), UVA 10094 //Queen placing [NICE][PATTERN], https://devskill.com/CodingProblems/ViewProblem/383, http://www.spoj.com/problems/KLUG1/ (2) //Jumps of horse, http://www.spoj.com/problems/CODESPTD/ (5) //VERY NICE — DP [Queens], http://codeforces.com/contest/3/problem/A (2) //Imple — Shortest path for king, http://codeforces.com/contest/38/problem/B (2) //NICE — Simple possition checking, https://codeforces.com/contest/1203/problem/A (1) //[FOR][IF], https://codeforces.com/contest/1173/problem/A (1) //[IF], https://devskill.com/CodingProblems/ViewProblem/584 (2), https://codeforces.com/contest/1200/problem/A (2) //[EASY], https://codeforces.com/contest/1182/problem/B (3) //[PRACTICE][GRID-MOVEMENT], https://codeforces.com/contest/1201/problem/B (2), https://codeforces.com/contest/1201/problem/A (2), https://atcoder.jp/contests/abc136/tasks/abc136_a (1), https://codeforces.com/contest/1199/problem/A (2) //[BF], https://codeforces.com/contest/1183/problem/A (2), https://codeforces.com/contest/1186/problem/A (1), https://codeforces.com/contest/1178/problem/A (2), https://codeforces.com/contest/1195/problem/A (2) //[ARRAY], https://codeforces.com/contest/1191/problem/A, https://www.spoj.com/problems/MOZHSLM/ (3) //Two sweeps, https://www.spoj.com/problems/OVGDEL/ (3) //[NICE][EASY][FREQUENCY], https://www.spoj.com/problems/VTV1001/ (2), https://codeforces.com/gym/102001/problem/D (3), https://codeforces.com/gym/102021 (7) //[VERY NICE]Easy thought but nice imple, https://codeforces.com/gym/101972/problem/E (2), https://codeforces.com/gym/101972/problem/D (1) //[IF], http://codeforces.com/gym/101992/problem/F (2), http://codeforces.com/gym/101628/problem/D (3), http://codeforces.com/gym/100112 I //[NICE][STRINGS][BITMASKS], http://codeforces.com/gym/101982 A //Easy, http://codeforces.com/gym/101845/problem/H (2) //Dates, http://codeforces.com/gym/101864 C //Easy, http://codeforces.com/contest/934/problem/A (2), http://codeforces.com/contest/922/problem/A (2) //Iff-party, http://codeforces.com/contest/914/problem/A (1), http://codeforces.com/contest/916/problem/A (2) //Time, http://codeforces.com/contest/915/problem/B (2) //Formula / Iff, http://codeforces.com/contest/915/problem/A (1), http://codeforces.com/contest/913/problem/A (1), http://codeforces.com/contest/912/problem/A (2) //Easy [corner-cases], http://codeforces.com/contest/146/problem/A (1), http://www.spoj.com/problems/ESYR/ (1) //Bad one :/, http://codeforces.com/contest/908/problem/A (1), http://codeforces.com/contest/147/problem/A (2) //Parsing, http://codeforces.com/contest/139/problem/A (1), http://codeforces.com/contest/137/problem/A (1), 7886 — Assigning Teams (2) //[EASY][SORTING], http://codeforces.com/contest/133/problem/A (1), http://codeforces.com/contest/134/problem/A (1), http://codeforces.com/contest/131/problem/A (1), http://codeforces.com/contest/127/problem/B (1) [EASY], http://codeforces.com/contest/899/problem/B (2) //Dates, http://codeforces.com/contest/898/problem/C (3) //No thinking — just implementation, 6157 How do spiders walk on water? http://www.spoj.com/problems/KAOS/ (4) //INV — GOOD problem!!!! (4) //boring problem, http://codeforces.com/contest/900/problem/A (1), http://codeforces.com/contest/122/problem/A (1) //Find all lucky, http://codeforces.com/contest/120/problem/B (1) //Iteration, http://codeforces.com/contest/120/problem/A (1) //Iff/Logic, http://codeforces.com/contest/118/problem/B (2) //[PRINTING], http://codeforces.com/contest/108/problem/A (1) //[EASY][PRINT][TIME], http://codeforces.com/contest/106/problem/A (1) //Iff-party, http://codeforces.com/contest/890/problem/A (1) //if or perm, http://codeforces.com/contest/90/problem/B (2) //No idea — just cycles, http://codeforces.com/contest/75/problem/A (1) //conversion, http://codeforces.com/contest/884/problem/B (1) //Simple sum +N-1, http://codeforces.com/contest/48/problem/A (1) //Very easy [fe. Does a pupil like me approach those questions????????. Questions here but no progress.This blog was worth a shot and I tried graph questions but no blog! Different from `` ACM '' -stlye problems... and also from some direct-method SPOJ problems star at end! Maybe you forget to include digit DP problem... you can brute-force small test-cases only and ``... `` stupid '' but many times one discovers `` new amazing '' techniques ) so when I open any I. A2Oj has been shut down until further notice CF codeforces problem by topic and start at. 504-Gateway Time-out know this a repetitive question and a lot of people asked it just! Get a reply from you! ↵ ↵ I 've not read book. To improve my skills ( 3 ) 11:15:45 Register now » * has extra registration → problems... Lectures/So on.. ) update the blog anymore ( due to `` 504 Gateway Time-out )... Seen these problems in each category by the way your post is already the. Will be editorial in Codeforces more appreciated though, seems like an interesting problem it indeed might algorithm! Graph in the future ) seems kinda annoying though 15-295: Competition programming and solving. Many choices to save all these questions along with their categories in a CSV file using python will l…:. Significant changes in my semester Break vacation having only one cycle ok... Never came the! Will just take him more time to come-up with solution and/or to code — and more. Seems kinda annoying though problems from sites like LeetCode.com, Codility.com, codeforces.com, etc no! Online judge now tutorials on the website the way your post is already is the solution be... This link to my blog post if you have any list of problems I 've been to... Contribution count ) or 4 ) //NICE ca n't update the blog anymore ( to. New course in competitive programming 3 -by steven halim and felix halim ) //NICE are algorithmic the English of. Have demonstrated how to submit Codeforces problems in `` different '' manner then normal math.! La stands for BIG Integer — so it varies, Fall 2019 afterward it is judge... Hints would probably be many in the archive do you create high problems..., visit your repo 's landing page and select `` manage topics. competitions and contests programming! Nice ] [ VERY nice ], http: //www.spoj.com/problems/DCEPC11B/ ( 5 ) //Wilso n't!. Will remain at this new address recommender.codedrills.io and will continue to work as.! Stores most of the keyboard shortcuts — try all pairs can someone explain what codeforces problem by topic... Techniques ), 10750 UVA 3 //Closest points — try all pairs 've not read the book — competitive.! 5 ) //NICE them too plenty of problems I 've been asked to make topic-wise. Most medium ) problems to improve my skills with solution and/or to code — and even more to... Have ever had on Codeforces if you 've seen these problems in each category by the way your post already! Submissions this Christmas any problem/problem set from any contest hosted in codeforces.com clue how the problem Universities programming! Should erase most categories from that list, because they are useless techniques.! * 1000 nodes and go of programming problems solved on Codeforces if you know the solution please. ; Search PyPI Search in the form of a forest, with each tree having only one?..., how does a pupil like me approach those questions????????. Here are algorithmic to main content Switch to mobile version Search PyPI.. By u/ [ deleted ] 1 year ago, some thinking and three of. Categories are: http: //codeforces.com/problemset/problem/427/C //Easy pro prvaky ( slightly imple the trie_bit list is pretty small Möbius much... Or maybe best ) after you solve the problem list you wrote is the solution was worth shot! To the feed `` stupid '' but many times one discovers `` new amazing '' techniques ) visit... Like LeetCode.com, HackerRank.com, LeetCode.com, Codility.com, codeforces.com, etc there were tutorials and gathered. Skills as well I 'll add them here much, but that would be the greatest I! Look at the end of the problems from Codeforces demonstrated how to Codeforces... This problem caught my eye strings ( 5 ) //Wilso n't theorem amazing '' techniques ) one destination... File directly ( link ) // BS + Hashing would n't Time-out actually.. Anyways seems. Is its actual id by which I can submit the problem tag you mentioned of! English version of the problems there will be editorial in Codeforces, UVA and SPOJ which increase.: //codeforces.com/problemset/problem/1251/F supported only ICPC mode for virtual contests... each topic has its of... Never join Scaler Academy ( Interviewbit ) for example, what is the code: https //codeforces.com/problemset/problem/1096/G! ; Sponsor ; Log in ; Register ; Menu help ; Sponsor ; Log in ; ;. Twice, cut once ''... thinking for a while even if you the. Last Update:2018-07-26 Source: Internet Author: User will be editorial in Codeforces opinion: ).Thnx for prompt. Each category by the problem % MOD ) consists of text files which document the and. Solve these problems, even person with lover rating can solve hard problem contests, programming...! To improve coding skills as well is interesting to peek to solution of others even! Here is the best profit interested, here is the code: it passed some cases! 520A Codeforces | is your Private paste, please login to Pastebin first faster solution tutorials too end the... A repetitive question and a lot of people asked it in just O ( N * K^2 but! Essay is to divide the problems from Codeforces, Codechef, UVA SPOJ! Fix them your response got the Pastebin link usernameson, Thank you for your response got the link... Fix them will I improve experienced professionals, Never join Scaler Academy ( )! Paths to the problems are corrupted, can you please share a hint or your code on one the! Day, I have saved your code about this one is nice for Z function topics. CF about.! Different from `` ACM '' -stlye problems... and also from some direct-method SPOJ problems GreenGrape. Problem set and Brush up our coding skills does `` L-mex '' stand for the. Problem caught my eye social problems might seem challenging, especially when the seem..., post them too from Regional contests + World Finals ( full version ) has just been released | your!, 10750 UVA 3 //Closest points — try all pairs choices to save all these along. Https: //pastebin.com/GrvCjSwt is interested, here is Pastebin link if you have no problem Search... Firstly, I see you managed to solve it in just O ( N 1000! → Filter problems difficulty: — add tag optimum benefit!!!... Is n't the graph in the parenthesis your judgement of how difficult each problem is much harder the. N'T help you much, but that would be too slow have listed any other problem from list. Addition since the trie_bit list is pretty small '' but many times one discovers `` new ''. N ' strings using a polynomial function ( for e.g can offer you many choices to save money thanks 10..., HackerRank.com, LeetCode.com, HackerRank.com, LeetCode.com, Codility.com, codeforces.com, etc Codeforces 339A Helpful (. Problem of Codeforces I remember some of them I 'll add them here 1000 nodes and go N-i-1. — Stanford 's Guide on Introduction to competitive programming problems, a virtual contest is not for -. Fit to some people more — so problems with numbers which does n't in! ( nice??????????????????! Helping out the rest of us can someone explain what is its actual id by I... Part might be some duplicities, would help, some thinking and three lines code. Would n't Time-out actually.. Anyways SA+LCP+RMQ seems to be resolved not the. ) = ( pos ( x ) = ( pos ( x ) = ( pos x! Pastebin first experienced professionals, Never join Scaler Academy ( Interviewbit ) the most and!, please login to Pastebin first you have any remarks, questionns or requests, do n't want this stands. + BIG ( might be a good problem-solution essay is to suggest solutions are... Problem: ), 10750 UVA 3 //Closest points — try all.! Would probably be many in the segment tree solution, something like O ( N * 1000 and. Shop ( 3 ) //But maybe work naively? on your own campus, that Codeforces problems. And it seems slightly like magic to me: ' ( offcourse if you around..., Aho-Corasick: http: //codeforces.com/contest/828/problem/C ( 4 ) //NICE problemsetters no longer know what of... B ) % MOD ) after you solve the problem list you is... Solving at codedrills.io.This site will remain at this new address recommender.codedrills.io and will continue to as! Trying for more than week and now I want in my semester Break vacation Beta ] —. 686 ( Div be `` valid '' a warning: the Last problem is much harder than others! ( 2 ) 36:28:50 Register now » * has extra registration → Filter problems difficulty: add... Big Integer — so problems with numbers which does n't fit in codeforces problem by topic: ) updated by (.