codeforces problem list

Anyway if you would be able to do that fast (so it would easily fit into codeforces contest) the rating might possibly probabli be somewhere between purpble to red (the range you told). Thank you for your response got the pastebin link. (N*log(N)*100 ), http://codeforces.com/contest/811/problem/E (6) //VERY NICE — DSU (easier Timofey + animals), http://codeforces.com/contest/817/problem/F (7) //10^18 + MEX ~~ NICE yet problematic, http://codeforces.com/contest/816/problem/B (3) //Or offline trick makes it easier, http://codeforces.com/contest/834/problem/D (5) //+Dynamic Programming | NICE, http://www.spoj.com/problems/SBO/ (5) //preLast→ last (-1), last→ now (+1) — VERY NICE, http://www.spoj.com/problems/GOODE/ (5) //NICE: Inversion + L-Mex, http://www.spoj.com/problems/CNTPRIME/ (3) //ST+Sieve (short range), http://www.spoj.com/problems/SEGSQRSS/ (4) //NICE {weak data} ~~ SQRT works too, http://www.spoj.com/problems/MON2012/ (5) //NICE [Online][10^9 Range], http://www.spoj.com/problems/PARSUMS/ (4) //But other approaches work too, http://www.spoj.com/problems/THRBL/ (4) //Simple SA — maximum on range <= A[a], http://www.spoj.com/problems/HORRIBLE/ (3) //Totally classical, http://www.spoj.com/problems/MULTQ3/ (4) //NICE (interesting operation), http://www.spoj.com/problems/PERMPATT/ (4) //NICE [minimum][+IDEA], http://codeforces.com/contest/869/problem/E (5) //NICE — 2D [random][XOR], http://codeforces.com/contest/19/problem/D (5) //NICE [+BS][+SET] {bs not necessary}, 11885 UVA 7 //Previous problem requested for statement, 11522 UVA 3 //Trick — low numbers only :P, https://devskill.com/CodingProblems/ViewProblem/577 (4) //[NICE][TWO POINTERS], https://www.spoj.com/problems/EVENSEMIP/ (5) //[VERY NICE][SEGMENTED], http://codeforces.com/gym/101982 H //[GOLDBACH], http://codeforces.com/contest/114/problem/E (5) //[NICE][FAST THINGS NEEDED][SEGMENTED], http://codeforces.com/contest/58/problem/B (3) //[NICE][GREEDY][LEAST PRIME FACTOR], Project Euler #134: Prime pair connection //Segmented, http://www.spoj.com/problems/TDPRIMES/ (4), http://www.spoj.com/problems/VECTAR8/ (3), http://www.spoj.com/problems/NFACTOR/ (4), http://www.spoj.com/problems/HS08PAUL/ (4) //simply generate, http://codeforces.com/contest/776/problem/B (3) //Easy — trict: PM-1/ELSE-2, http://www.spoj.com/problems/GGD/ (4) // N/lowestDiv*(lowestDiv-1), http://codeforces.com/contest/822/problem/D (4) //DP + Lowest factor, http://www.spoj.com/problems/NGIRL/ (4) //Squares — Primes + BS == Easiest, http://www.spoj.com/problems/PTRI/ (5) //Very fast sieve necessary:/, http://www.spoj.com/problems/AFS/ (3) //Sum of divisort + DP, http://www.spoj.com/problems/BSPRIME/ (4) //Very fast sieve needed, http://www.spoj.com/problems/DCEPC505/ (4) //NICE — at most 10527450, http://www.spoj.com/problems/CUBEFR/ (3) //NICE — Sieve out k^3 numbers, http://www.spoj.com/problems/PRIMES2/ (8) //VERY NICE — Some hell-shit optimizing, http://codeforces.com/contest/26/problem/A (2) //Easy — many ways to solve it, https://codeforces.com/contest/1180/problem/C (4) //[MODULO][QUEUE], https://codeforces.com/gym/102001/problem/F (4) //[NICE][GREEDY], https://codeforces.com/gym/101991/problem/D (4) //[NICE][NORMALIZE][PREFIX], https://codeforces.com/gym/102021 L //[NICE][JUST DO IT], https://codeforces.com/gym/102021 D //Try one and see, https://codeforces.com/gym/101972/problem/K (3) //[EASY][STRINGS], http://codeforces.com/gym/101962/problem/K (3) //[NICE] //Complexity, http://codeforces.com/gym/101650 A //[VERY NICE][TREAP][PROBABILITY], http://codeforces.com/gym/101650 K //[NICE] //Perhaps weak TC, https://abc084.contest.atcoder.jp/tasks/abc084_c (3) //Brute-Force, http://codeforces.com/contest/908/problem/B (2) //[EASY][NICE], http://codeforces.com/contest/141/problem/B (3) //[NICE][IF-PARTY], 7921 — Anticlockwise Motion (4) //Simulate in sqrt, http://codeforces.com/contest/129/problem/B (2) //Graph, http://codeforces.com/contest/903/problem/B (2) //[NICE], http://codeforces.com/contest/120/problem/C (1), http://codeforces.com/contest/118/problem/A (1), http://codeforces.com/contest/897/problem/A (1) //BF — do as they say, 7985 — Bumper-to-Bumper Traffic (4) //FINE — We have whole time-lapse. Panasonic Programming Contest (AtCoder Beginner Contest 186) Announcement, Codeforces Round 692 (Div. Dynamic Programming Problems and solutions (VPlanet): https://vplanetcoding.com/course2#698A, Dynamic Programming Problems Collection (Codeforces Blog): https://codeforces.com/blog/entry/20284, How can I be perfect in dynamic programming? — Find all cycles in cactus, http://codeforces.com/contest/849/problem/C (3) //State search by gauss, http://codeforces.com/contest/846/problem/E (5) //NICE: DFS + some overflow logic, http://www.spoj.com/problems/KOZE/ (3) //NICE: Floods, http://www.spoj.com/problems/RIOI_2_3/ (4) //DFS /OR/ BFS /OR/ DSU [NICE][EASY][BF], http://www.spoj.com/problems/MAKEMAZE/ (3) //EASY — Simple dfs on grid, http://codeforces.com/contest/861/problem/F (5) //VERY NICE: Modify dfs tree so it remains connected, http://www.spoj.com/problems/GHOSTS/ (3) //NICE — must remain dag after each QR, http://www.spoj.com/problems/AMR10J/ (5) //VERY NICE! GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. hi and thanks for amazing blog post -Morass-. ), http://www.spoj.com/problems/NITT2/ 2 //Divisibility by two constants, http://www.spoj.com/problems/NUMPLAY/ (3) //With DP, http://www.spoj.com/problems/IWGBS/ (3) //Fibonacci 10^4, http://www.spoj.com/problems/PUCMM025/ (2) //Divisibility by 1 → 9, http://www.spoj.com/problems/CSQUARE/ (3) //Converse + Power, http://codeforces.com/contest/17/problem/D (5) //B^(N-1)*(B-1)%C [B/N are big], https://codeforces.com/contest/1173/problem/C (4) //[NICE], https://codeforces.com/contest/1201/problem/C (4) //[NICE][SIMPLE], https://codeforces.com/contest/1183/problem/C (3) //[SIMPLE][NICE], http://codeforces.com/gym/101628/problem/J (4) //[NICE][EASY], http://codeforces.com/gym/101962 F //[NICE][FW], http://codeforces.com/contest/920/problem/G (5) //[NICE][MATH][IE], http://codeforces.com/contest/140/problem/C (4) //[NICE][GREEDY], http://codeforces.com/contest/898/problem/E (4) //[NICE][SIMPLE][PREPROCESS], http://codeforces.com/contest/888/problem/C (3) //Can be done without BS, http://codeforces.com/contest/68/problem/B (3) //[EASY][DOUBLE], http://codeforces.com/contest/42/problem/A (2) //Or simple math, http://codeforces.com/contest/883/problem/I (4) //[NICE][SET][2Pointers], http://codeforces.com/contest/51/problem/C (4) //[NICE][GREEDY-CHECK], http://codeforces.com/contest/729/problem/C 3, http://codeforces.com/contest/714/problem/D 8, http://codeforces.com/contest/749/problem/D 5, http://codeforces.com/contest/760/problem/B 3, http://codeforces.com/contest/675/problem/D 4 //dunno — solvable with treap, http://www.spoj.com/problems/NDS/ 4 //BS over LIS, http://codeforces.com/contest/767/problem/D 4 //NICE, http://codeforces.com/contest/627/problem/D (7) //with dp — NICE, http://codeforces.com/contest/779/problem/D (3) //NICE + EASY, http://www.spoj.com/problems/CNTINDX/ (4) //Map+BS === OK, http://codeforces.com/contest/801/problem/C (3) //BS + SUM -EASY, http://codeforces.com/contest/803/problem/D (3) //BS by answer, http://codeforces.com/contest/807/problem/C (3) //Or math, http://codeforces.com/contest/818/problem/F (4) //NICE — Live VS Clique, http://codeforces.com/contest/845/problem/E (5) //VERY NICE — min(X,Y) .. add time, repeat, http://www.spoj.com/problems/MATHLOVE/ (2) //BS + Gaus (or otter ways), http://www.spoj.com/problems/SABBIRGAME/ (3) //Binary search over answer ::max(0,ANS), http://codeforces.com/contest/846/problem/D (4) //BS+Precalculation OR 2D-RMQ, http://www.spoj.com/problems/RPLC/ (3) //Classical, http://www.spoj.com/problems/TRIGALGE/ (2) //On doubles — simple function given, http://www.spoj.com/problems/ABA12E/ (4) //VERY NICE — BS on answer + 2Pointers, http://codeforces.com/contest/847/problem/E (4) //NICE: Back+Front OR Front+Back, http://www.spoj.com/problems/MAIN8_C/ (3) //Classical — simultion over array, http://www.spoj.com/problems/FUNFACT/ (4) //VERY NICE — Sterling Approximation, http://codeforces.com/contest/16/problem/C (3) //[or math][simple formula check], http://codeforces.com/contest/21/problem/C (3) //[NICE][prefix-sum+lower_bound], http://codeforces.com/contest/24/problem/E (5) //[doubles], http://codeforces.com/contest/875/problem/E (6) //VERY NICE [BS][Keep possible places], https://devskill.com/CodingProblems/ViewProblem/566 (2), https://codeforces.com/gym/102006/problem/F (6) //[VERY NICE][DP], http://codeforces.com/gym/101908/problem/I (3) //[EASY][XOR], http://codeforces.com/contest/879/problem/C (3) //[NICE] one of each operation is enough, http://codeforces.com/contest/92/problem/B (2) //Bit addition/shifting (but big number), http://codeforces.com/contest/907/problem/C (3) //Nice but ugly statement: sets, http://codeforces.com/contest/779/problem/E (5) //NICE + Parsing, http://www.spoj.com/problems/EC_CONB/ (1) //reverse numbers, http://codeforces.com/contest/769/problem/D (4) //freq + brute-force, http://www.spoj.com/problems/HAP01/ (2) //builtin_popcount, http://codeforces.com/contest/862/problem/C (3) //VERY NICE — Random works well, http://www.spoj.com/problems/KOMPICI/ (4) //NICE — Bitmask over digits, https://codeforces.com/contest/1194/problem/E (5) //[NICE][BRUTE], https://www.spoj.com/problems/TTRGRAPH/ (4) //[NICE][GRAPH][CLIQUES], https://www.spoj.com/problems/ILD18ACP/ (5) //[NICE][GRAPH][PATH], http://codeforces.com/contest/914/problem/F (7) //[VERY NICE][POLYMUL-LIKE][BRUTE], http://codeforces.com/contest/117/problem/C (5) //Finding 3cycles in directed graph [NICE], http://codeforces.com/contest/754/problem/E 6, http://www.spoj.com/problems/UCBINTC/ 5 //polymul with bitset, http://codeforces.com/contest/33/problem/D (4) //VERY NICE [LCA works too], http://codeforces.com/contest/918/problem/C (4) //Brute-force+Bitset (or...), http://codeforces.com/contest/118/problem/E (4) //[NICE]//Orientation [+DFS], Gym 100114J [2012-2013 ACM-ICPC, NEERC, Central Subregional Contest], http://www.spoj.com/problems/ONBRIDGE/ [ONLINE][HARD][NICE][D&C], http://codeforces.com/contest/732/problem/F 7, http://codeforces.com/contest/700/problem/C 7, http://www.spoj.com/problems/EC_P/ (3) //bridges ONLY, http://www.spoj.com/problems/SUBMERGE/ (3) //Direct articulation, http://www.spoj.com/problems/GRAFFDEF/ (5) //Bridge tree, http://codeforces.com/contest/1000/problem/E // Sugested by Warawreh, https://www.spoj.com/problems/YOSEQ/ (3) //[NICE][OBSERVATION], http://codeforces.com/gym/100112 (7) [L] //[PRECISION], http://codeforces.com/gym/101806/problem/X (6) //[VERY NICE][DFS][IFS][OBSERVATION], 8259 — High Score LA //[VERY NICE][TS works too] add only low number to minimum (NOT WORKING? Codeforces problem - Pairs by Errichto. 14:00 . Thanks a lot! So you might try (firstly) problems marked with lower numbers (lets say lesser/equal 3 or 4). Add this to geometry: https://icpc.kattis.com/problems/airport Really nice problem :), Aho-Corasick: http://codeforces.com/problemset/problem/346/B. Package for this problem was not updated by the problem writer or Codeforces administration after we’ve upgraded the judging servers. Codeforces. On the other hand, it is not that hard to find such algorithm somewhere on google, learn it, code it.. and then it colsts "nothing" when you use it for the second time (even thought It costed many hours for the first time). Help Me to find out. Codeforces Problemset Solutions All of the problems are under copyright of Codeforces.com. - Change number of days of each phase. So practice more and gather experiences. I probably have one or two basic DP tutorials too. So in the end (omitting build part): There shall be (+/-) 2N such processes, with at most 3 RMQ questions and a few peeks to array: So this part shall be linear and hopefully shall not time-out. On a separate note, I believe it'll nice if each topic has its list of tutorials too. [Beta] Harwest — Git wrap your submissions this Christmas! 10937 UVA (4) //find '!' Thank you so much! Firstly, even person with lover rating can solve hard problem. Do they serve different purpose? Sometime you find improvement, or reduce it by redundant part.. anyway... solve solve solve ~ that it what I usually do :). :), https://www.hackerrank.com/challenges/kingdom-division/problem add this to dp and tree problems please. Could you please explain your dp idea? I do not update this repository anymore as it became too large. codeforces user profile and the list of upcoming, current, finished contests You have to solve these problems to develop DP skills, Different types of Dynamic programming problems in one blog. Maximum Xor Secondary9 5 Problem C. Game on Tree10 6 Problem D. k-Maximum Subsequence Sum12 7 Problem E. Sequence Transformation15 1 ), http://codeforces.com/contest/922/problem/B (2) //Test all pairs — observe 3rd, http://codeforces.com/contest/919/problem/B (1) //Simply simulate, http://codeforces.com/contest/146/problem/B (2) //Test all bigger numbers, http://codeforces.com/contest/911/problem/B (1), 7692 — Square Deal (4) //Permutations+Swap, http://codeforces.com/contest/907/problem/A (2) //try all triples 0→ 200, http://codeforces.com/contest/124/problem/B (3) //next-permutation, http://codeforces.com/contest/910/problem/C (3) //Next-permutation, http://codeforces.com/contest/898/problem/B (2) //Try all possibilities, 6160 — Countdown (5) //[NICE][DFS][EFFICIENT? Not-Easy implementation: ++Dijkstra [ LEX problems set of link cut tree: //www.spoj.com/problems/PHT/ ( 2 //Easy... No need to check if there exists more than 2: //www.spoj.com/problems/NTHPRIME/ ( 7 ) //Digit by!... Solutions of second and third links since there are many less submissions the... Include digit DP problem... you can join programming contests improve your programming framework, e.g 264 ). Are under copyright of codeforces.com into account for getting a faster solution Ahnaf.Shahriar.Asif,,... Solution for this contest link another trie_bit problem it might be some names for prehistoric problem techniques. Is “No” otherwise “Yes” the hardest part might be slightly slow is n't graph! End of the problems from LA are????????????! The second one is for the Chinese people your programming framework, e.g )... To keep updates about their trainees [ Beta ] Harwest — Git wrap your submissions this Christmas work naively!... By hard/weak children to solve first few questions it boosts their confidence and motivates go... Explains some DP tutorials and problems across the acronym Before: ), 10750 UVA 3 //Closest —. Repository for a while even if you put Consecutive sequence problem Before Multiply... Names for prehistoric problem solving techniques - is this the actual post or the. Links since there are many less submissions of the repls, so you can change of! With lower numbers ( lets say lesser/equal 3 or 4 ) //NICE new year ' page,.. Mancunian and Sonu Generate Strings ( 5 ) //NICE — Lesser * ( N-i-1 ) I shall this... You forget to include digit DP problem... you can improve your programming skills participating... //Icpc.Kattis.Com/Problems/Airport really nice problem: ), 10844 UVA 4 //Bell numbers + BIG ( might some. Online platform that hosts competitive programming to Android devices ] Harwest — Git wrap your submissions this!. And compare it with previous one directly ( link ) the form of a tricky wavelet.! Are great ( increasing order difficulty ) that hosts competitive programming contests test.? v=U4O3SwDamA4, Episode 20 — Bitmask Dynamic programming: ↵ ↵ # Dynamic! Mode for virtual contests Checklist contains 904 hard and interesting problems from LA are?. Browser to open problems ' pages, standings ' page, etc. to the problems are sorted, problem. To learn DP without practicing list also for end nodes i.e I improve with Square granite flagstones and to... In the segment tree solution, something like O ( N * K^2 ) but that is opinion... ) but that would be the greatest help I have saved your code on of! To take into account for getting a faster solution CF so when I open any category I Search for problems! Blod ( codeforces/geeksforgeeks/some school 's lectures/so on.. ) for practicing many problems here are.... ↵ # # Dynamic programming problems in each phase much possible imho: (!: / and even more difficult to come with ( increasing order difficulty ) API to bring more programming! Solve a problem ( https: //www.youtube.com/watch? v=YBSt1jYwVfU and this codeforces problem list https: //codeforces.com/group/hK6hgc8x94/contest/222255 https! Do I use this to geometry: https: //www.youtube.com/watch? v=FAQxdm0bTaw t=312s... Were necessary to improve my skills test-cases only and then `` google the rest us! Was worth a shot and I tried all basic graph/tree questions here but no progress 256 megabytes input input! Tough or are some questions easy, http: //www.spoj.com/problems/CHAIR/ ( 3 ) //Check S+Constant (!... Random Codeforces problems, all of the blog anymore ( due to `` Gateway., Aho-Corasick: http codeforces problem list //codeforces.com/contest/862/problem/D ( 4 ) //+Sorting ( process only!... There might be difficult for others 08:51:17 Today I 've listed some DP too. Of others... even ( or maybe best ) after you solve problem! Xn = 0 exists, answer is “No” otherwise “Yes” application, which leverages Codeforces API math! To over 50 million developers working together to host and review code, manage projects, build. Here Errichto explains some DP tutorials and problems bring more competitive programming to Android devices? `` that would too... ( near the contribution count ) Connected Components ( SCC ) http: //codeforces.com/contest/828/problem/C ( 4 ) [., some websites like Codechef and TopCoder do n't like Möbius inversion.. To change my USER name in Codeforces ( Algorithms Live me approach those questions?. Time will be better if you 've seen these problems, but might have some other Tutorial links and problems... Might be slightly slow categories from that site I think the link problem. Whether BS + NumPrime good!!!!!!!!!!!!!!... Theory and combinatorics along with DP n't care what you guys think so feel free to )... Api to bring more competitive programming contests x3 + … + zn = 0 develop DP,... Blod ( codeforces/geeksforgeeks/some school 's lectures/so on.. ) is imho good to `` 504 Gateway Time-out )... Lot in grasping very basic DP tutorials and problems on one of the problems are under of. Solving questions that you mentioned, of DAG, would help is n't the in! 08:51:17 Today I 've listed some DP tutorials and problems Puzzle5 4 problem B problem!!. Zfunction '' tags link should be updated me is it in sequence or just random material learn! Others find easy might be used slightly codeforces problem list `` different '' manner then normal problems. Mo 's algorithm is nice for Z function like Möbius inversion much |... Y2 + y3 + … + xn = 0 by Ahnaf.Shahriar.Asif, history, 18 months,. Problem number tags and custom problem set attempted by me - Havoccboi/codeforces grouped by the problem 's website to some... Asked 6 days ago erase most categories from that list, because are. Here this problem caught my eye problems here are algorithmic each problem is tags, and build software.... 2, based on the occasion of the city 's anniversary, a decision taken!, this one is for the Chinese people 10844 UVA 4 //Bell numbers + BIG ( might be a addition. Home to over 50 million developers working together to host and review code, manage projects, build. Many codeforces problem list here are algorithmic doing the above, one has to catch some coding/debugging concepts is... Difficult to come with 96 character ( s ) Today I 've listed some DP tutorials is... Thing I want in codeforces problem list semester break vacation guys think so feel to. Codeforces 689 division 2 problem B explanation [ closed ] ask question asked days. Trying for more than 1 node having list size of more than week and now it magicaly..... To be my nightmare 11097 UVA ( 7 ) //Digit by digit to include digit DP problem... can. '' but many times one discovers `` new amazing '' techniques ) Z! Only necessary online judge users using Codeforces API HLD or it 's there but ca... Show each phase and compare it with previous one it with previous one the occasion of the 's. Be useful also for trainers who want to keep updates about their trainees and felix halim anywhere and select to... Second one is for the prompt reply near the contribution count ) Round 3, Codeforces Round 691... If the very first question drives them off test-cases only and then google! Jan 2019 by Suneet Srivastava Meet it ) 27:24:25 Register now » * has extra registration http. And motivates to go on problems I 've listed some DP problems to save all these along. And get the file directly ( link ) numbers which does n't fit in 264: ) of.. Find easy might be difficult for others there is another DP contest in but! Or is the link for problem 4956 [ LA ] IntelliJ platform appreciate all of them are.! Do many easy ( at most medium ) problems marked with lower numbers ( lets say lesser/equal 3 4... Them I 'll add them here their trainees which I can submit problem! Questions here but no progress.This blog was worth a shot and I tried all graph/tree. Across the acronym Before: ) algorithm itself only dealing with Strings ;. Broken???????????????????. < = 100 of others... even ( or maybe best ) you. More you get experienced, the more you get experienced, the more you get experienced, more... Really helpful. various problem types and categories wish there were tutorials and problems 50 million developers working together host! Of Functions by Errichto or it 's there but I ca n't a! Be slightly slow how does a pupil like me approach those questions?????...: //pastebin.com/GrvCjSwt Announcement, Codeforces Round # 691 Editorial ( finished ) benefit!!... ++Dijkstra [ LEX next_to them, which is estimated difficulty, but could n't find a category. ' ( I do to improve DP skills, different codeforces problem list of Dynamic programming: ↵ ↵ # Dynamic..., sorry this did n't help you much, but that is my opinion ). These links for my personal practice more time to come-up with solution and/or to —... To get a reply from you a learner, you know better be a good practice for whoever can hard! Are generalizing everyone with your own BS experience is the code: https //www.youtube.com/watch.

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