Before stream 13:15:44. 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: There is nothing, or low number of problems in the topic. It indeed might be hard to code — and even more difficult to come with. There are plenty of problems, even on your own campus, that need to be resolved. I have made not much progress in a week or so other than determining the shape of each component (multiple trees hanging from a cycle). Also sometimes it is good to "measure twice, cut once"... thinking for a while even if you know the solution. I, then, made a resolution to be at least candidate master before I stop practicing religiously. — NICE! Editorials. 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. http://www.spoj.com/problems/CHAIR/ (3) //Maybe combinatorics too? Just the thing I want in my semester break vacation! 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! Can someone explain what is the solution for this problem? understrood, http://codeforces.com/contest/828/problem/F 7 // Differently MST / Outside, http://codeforces.com/contest/832/problem/D (5) //Classical + Depth /OR/ HLD +ST, http://www.spoj.com/problems/DRTREE/ (5) //NICE [finding ancestor + depths], http://codeforces.com/problemset/problem/838/B (6) //VERY NICE [HLD + ET + ST], http://www.spoj.com/problems/NTICKETS/ (4) //Maximum on path, http://www.spoj.com/problems/GRASSPLA/ (5) //HLD, http://codeforces.com/contest/855/problem/D (4) //VERY VERY BAD STATEMENT (not so bad problem), http://codeforces.com/gym/101630 {L}(6) //[NICE][HLD or DSU][XOR] //Parenthessis, http://www.spoj.com/problems/ADASEED/ [HUNT], http://www.spoj.com/problems/XMEN/ //Perm, http://www.spoj.com/problems/MC/ (3) //Classical, http://www.spoj.com/problems/LCS0/ (7) //Bit, http://www.spoj.com/problems/ADAROADS/ [ONLINE][UPDATES][LCT], http://www.spoj.com/problems/DYNALCA/en/ //DYNAMIC LCA, http://codeforces.com/gym/100460/problem/C, http://codeforces.com/gym/100960/problem/H, http://codeforces.com/contest/892/problem/E (7) [VERY NICE]//By prices .. LCT, http://www.spoj.com/problems/ALTSEQ/ 3 //solvable by FW in Nlog(N), http://www.spoj.com/problems/VISIBLEBOX/ (4) //with multiset, http://www.spoj.com/problems/CODERE3/ 3 //Low bounds LIS/LDS, http://www.spoj.com/problems/BRDGHRD/ 4 //lis (nondecreasing), http://www.spoj.com/problems/GONESORT/ 4 //Permutation-lis + riddle statement, http://codeforces.com/contest/847/problem/B 4 //Multiple Lis's, http://codeforces.com/contest/67/problem/D (4) //[NICE][DOUBLE REMAP], https://codeforces.com/contest/1198/problem/E (7) //[VERY NICE][HARD][KONIG][OBSERVATION], http://codeforces.com/gym/101666 E //[NICE][GEOMETRY][BINARY SEARCH][PROBABILITY], http://www.spoj.com/problems/MATCHING/ //Raw (no sauce), http://codeforces.com/contest/116/problem/B (3) //Low cons. Codeforces 339A Helpful Maths (greedy implementation sortings strings water problem) ... 2 The problem is the order from small to large output on the line, the ' + ' number unchanged. So math but basically different approach ^_^. ], https://www.spoj.com/problems/COWGATH/ (5) //[VERY NICE][EULER][OFFLINE][SEGMENT], https://codeforces.com/gym/102021 A //[IMPLEMENTATION][LCA], http://codeforces.com/gym/101908/problem/L (5) //[NICE][HLD][FW], http://codeforces.com/gym/101808/problem/K (5) //[NICE][IMPLEMENTATION][CYCLE], http://www.spoj.com/problems/LCA/ //Easiest one — low constraints [practice], http://codeforces.com/contest/916/problem/E (6) //[VERY NICE][SEG-TREE]//REROOT, http://codeforces.com/contest/911/problem/F (5) //[VERY NICE][LONGEST PATH], https://devskill.com/CodingProblems/ViewProblem/141, Gym 100685G [2012-2013 ACM-ICPC, NEERC, Moscow Subregional Contest], https://www.codechef.com/problems/CLOSEFAR //But kinda more comples [ST], http://codeforces.com/contest/733/problem/F 7, http://www.spoj.com/problems/POLICEMEN/ (3) //simple + small graph, http://www.spoj.com/problems/QTREE2/ (5) //very easy if bin. -Hitachi Hokudai Lab. I wish there were tutorials and solutions gathered for these problems :D, What do you mean by hard/weak children? i have never heard of it. Solutions of algorithmic type of programming problems from sites like LeetCode.com, HackerRank.com, LeetCode.com, Codility.com, CodeForces.com, etc. If you've seen these problems, a virtual contest is not for you - solve these problems in the archive. Yes it is out of 10 (even thought — I think I've never used such big number :P) [but again.. it is just estimation, so might not be absolutely correct :) ], can you give an estimate that what will be my rating like if I solve questions till level a)5 b)6 c)7 d)8(will take a long time to reach here. (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. I will definitely use this to structure my training. ], https://www.hackerrank.com/contests/mathemagic-bits/challenges/degree-diameter-on-trees [accesable? Timelimits of the problem … Press J to jump to the feed. 1 + Div. However I'm still getting TLE. Login; Register; User Editorials : Search Friends ... Leaderboard: Trending Problems: Submission Filters: Testimonials: Feature Updates: Find Me Problems. 6590 Digraphs (4) //[VERY NICE][CYCLES][DP][IDEA], http://codeforces.com/contest/893/problem/C (3) //Minimum from each connected component, http://codeforces.com/contest/884/problem/C (3) //[EASY][PERMUTATIONS][SORTING], http://codeforces.com/contest/883/problem/G (4) //Greedy picking, http://codeforces.com/contest/60/problem/B (3) //3D Flood-Fill [NICE][EASY], http://codeforces.com/contest/60/problem/C (4) //[VERY NICE][BF]//Not many real possibilities, https://devskill.com/CodingProblems/ViewProblem/3, https://devskill.com/CodingProblems/ViewProblem/17, https://devskill.com/CodingProblems/ViewProblem/118 //Kind-of, http://codeforces.com/contest/734/problem/E (5), http://codeforces.com/contest/727/problem/A (3), http://codeforces.com/contest/723/problem/E (6), http://codeforces.com/contest/709/problem/E (6), http://codeforces.com/contest/710/problem/E (4), http://codeforces.com/contest/758/problem/E (8), http://codeforces.com/contest/760/problem/B (3), http://codeforces.com/contest/761/problem/E (6), http://codeforces.com/contest/638/problem/B (3) //connect cons. 2) Editorial. Problem 520A Codeforces | Pangram | 22 Jan 2019 by Suneet Srivastava. [Beta] Harwest — Git wrap your submissions this Christmas! As one improves (hopefully), he must start doing harder and harder problems and soon with the harder problems, he must lear also advanced algorithms: Suffix Array/HLD/Segment Trees/...(and many many others) which are usually not "that" necessary for easier problems. Even though I couldn't involve all problems, I've tried to involve at least "few" problems at each topic I thought up (I'm sorry if I forgot about something "easy"). using Java. This repository is a notebook consisting of all my solutions to questions from CodeForces. ), http://codeforces.com/contest/831/problem/E 4 //MAP to get ORDER — FW == LIST, http://www.spoj.com/problems/SAS001/ (4) //Nice — number of inversions + 2P. 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)]. There is nothing, or low number of It seems that you don't like Möbius inversion much. Some of them are marked by a number (by which I've tried to estimate the difficulty). In this video tutorial i have demonstrated how to submit CodeForces problems. Might be some names for prehistoric problem solving techniques. Managed to solve it in just O(N) and N is only <= 100. I know this a repetitive question and a lot of people asked it in the past but please answer me. (BIG%9), 10844 UVA 4 //Bell numbers + big (might be slightly slow! 7-day free trial. I was really surprised :). -Morass- Can You say the total numbers (digit) :p of the problem listed here :D :D, Hey Anyone Help me with STL very first problem [ADABASET]-(https://www.spoj.com/problems/ADABASET/en/). To all my Indian juniours and experienced professionals, Never join Scaler Academy(Interviewbit). Can be done without algo, 10080 — Gopher II (UVA) //Easy — sympathic, http://codeforces.com/gym/101485 (Elementary Math — E) //Very nice principal [not that hard], http://codeforces.com/gym/100820 (Airport — A) //Nice one, http://codeforces.com/gym/100753 (Bounty Hunterr II — B) //VERY NICE — I refered multiple times to this principal, http://codeforces.com/gym/101408 (Cat vs Dog — C), 1171 — Knights in Chessboard (II) (LOJ) //Classical chess, http://codeforces.com/gym/101047/problem/H, http://codeforces.com/problemset/problem/659/E, https://www.codechef.com/problems/CHEFYODA //Imho matching is not the crucial part here, http://codeforces.com/problemset/problem/831/D, http://codeforces.com/contest/727/problem/D 4, http://www.spoj.com/problems/AMR12A/ (5) //VERY NICE goophers + bonus, http://www.spoj.com/problems/NITT4/ (4) //VERY NICE [Chessboard matching], http://www.spoj.com/problems/SCPC11H/ (4)//NICE — Match those which fits inside, UVA 13298 — A Fibonacci Family Formula (4) //[NICE][CLASSICAL], http://codeforces.com/gym/101628/problem/I (4) //[MODULAR][NICE][TRANSITION], http://codeforces.com/gym/101845/problem/A, 13284 Macarons (4) //[NICE][BITMASK][DP] Classical, http://codeforces.com/contest/147/problem/B (5) //[NICE][BS][GRAPHS], http://codeforces.com/contest/107/problem/D (5) //[NICE][DP], http://codeforces.com/problemset/problem/696/D, https://www.hackerrank.com/contests/mathemagic-bits/challenges/gp-on-fibonacci-matrix [accesable? 10937 UVA (4) //find '!' I think 576C is the most classical problem for MO's algorithm. Let's Break Codeforces Problem Set and Brush Up our coding skills as well! :). For most of the problems there will be editorial in Codeforces. perm], http://codeforces.com/contest/51/my (2) //Lex-lowest-string (|s|=4), http://codeforces.com/contest/54/problem/A (2) //Single sweep, http://codeforces.com/contest/719/problem/C 3, http://codeforces.com/contest/747/problem/E 4, http://codeforces.com/contest/754/problem/C 5, http://codeforces.com/contest/678/problem/B 2 //calendar days, http://codeforces.com/contest/643/problem/A 3 //easy — just simulate, http://codeforces.com/contest/770/problem/D 5 //easy — but pain — draw, http://codeforces.com/contest/789/problem/B 3 //simulate (mby twice), http://codeforces.com/contest/828/problem/B 2 //EASY & NICE — just analysis, http://codeforces.com/contest/825/problem/B 2 //EASY & NICE — Piskvorky — pro prvaky, http://codeforces.com/contest/837/problem/B 2 //Just implementation, http://codeforces.com/contest/837/problem/C 2 //Some nasty iffs, http://codeforces.com/contest/845/problem/B 2 //Easy pro prvaky, http://codeforces.com/contest/845/problem/D 3 //Iffs — folow the rules, http://www.spoj.com/problems/UNIHW/ 4 //NICE (but many iffs), http://codeforces.com/contest/5/problem/A (2) //Parsing, http://codeforces.com/contest/5/problem/B (3) //Output formating, http://codeforces.com/contest/6/problem/B (2) //Simply check by adjancecy vector + set, http://codeforces.com/contest/7/problem/A (1) //Oneinteresting if, http://codeforces.com/contest/8/problem/B (2) //Sample vectors + set/or/array, http://codeforces.com/contest/12/problem/A (1) //Find mirror by middle, http://codeforces.com/contest/16/problem/A (1) //Easy check of chars, http://codeforces.com/contest/21/problem/A (2) //Easy but nasty iff imple, http://codeforces.com/contest/31/problem/B (2) //Boring imple, http://codeforces.com/contest/34/problem/C (3) //Easy string parsing, http://codeforces.com/contest/41/problem/C (2) //String parsing, http://www.spoj.com/problems/KPRIMESB/ (4), http://www.spoj.com/problems/IITKWPCH/ (4) //NICE — on bits, http://www.spoj.com/problems/SUBSET/ (5) //VERY NICE — 3^10 (^2 but not exactly) (+ sorting), https://www.hackerearth.com/practice/algorithms/dynamic-programming/bit-masking/practice-problems/algorithm/special-pairs-7/description/ (4) //NICE [Brute-force], http://codeforces.com/contest/897/problem/D (4) //NICE! I am thinking a dp on tree solution, something like O(N*K^2) but that would be too slow. are all the questions tough or are some questions easy, how does a pupil like me approach those questions??? ], http://codeforces.com/contest/798/problem/B (2) //Brute-force .. pro prváky, 10745 UVA (4) //Frequency (N^2 possible if efficient!! 11097 UVA (4) //Divide to N*1000 nodes and go! Codeforces. 15-295: Competition Programming and Problem Solving, Fall 2019. Codeforces 339A Helpful Maths (greedy implementation sortings strings water problem) Last Update:2018-07-26 Source: Internet Author: User. 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". Or if anyone know any source? Hey ye: no idea what is wrong (not much verbose x( ), Here is the source to the post -- so you might either refer to it, or if anybody sees any visible failure — you can ping me and I'll try to fix x). Recently I was learn Link Cut Tree. It's my pleasure to get a reply from you! Good Day to you! Are the numbers in the parenthesis your judgement of how difficult each problem is? So find some way to learn them. http://codeforces.com/contest/31/problem/D (4) //[NICE] Brute-force by recursion, http://codeforces.com/contest/36/problem/B (2) //[NICE][SIMPLE], https://www.spoj.com/problems/MOZPWS/ (4) //[NICE][IMPLEMENTATION][MQ], https://codeforces.com/gym/101972/problem/G (4) //[NICE][SWEEP WORKS TOO], http://codeforces.com/problemset/problem/514/D //+BS, http://codeforces.com/problemset/problem/872/B, https://devskill.com/CodingProblems/ViewProblem/19, http://codeforces.com/contest/713/problem/D 6, http://codeforces.com/contest/675/problem/E 5, http://www.spoj.com/problems/POSTERIN/ 5 //VERY NICE — Delete all minimas, http://www.spoj.com/problems/RPLN/ (3) //RMQ only, http://www.spoj.com/problems/CITY2/ (4) //RMQ + MAP [NICE][VAGUE STATEMENT], http://www.spoj.com/problems/DIFERENC/ (4) //Solve separately (linear D&C), http://codeforces.com/contest/863/problem/E (4) //OR some Queue / sorting, http://codeforces.com/contest/5/problem/C (4) //NICE — many other options, http://codeforces.com/contest/15/problem/D (5) //VERY NICE 2D RM [sliding-windw][monotone-queue], http://codeforces.com/contest/873/problem/E (5) //[NICE][Brute-Force + RMQ], http://www.spoj.com/problems/AROPE2/ 5 //same as above (+time), http://www.spoj.com/problems/ADAPANEL/ [combinatorics], 13301 — Impossible Communication (4) //[CUTE][SAMPLE][OBSERVATION][EASY], http://codeforces.com/problemset/problem/427/C proposed by unofficial10, http://codeforces.com/contest/894/problem/E (5) //[NICE][DP], https://devskill.com/CodingProblems/ViewProblem/79, http://www.spoj.com/problems/TFRIENDS/ (4) //just scc size, http://www.spoj.com/problems/CAPCITY/ (4) //scc destination [WEAK TC], http://codeforces.com/contest/22/problem/E (5) //[NICE][make it strongly connected][SRC>DST], http://www.spoj.com/problems/ADABERRY/ [+TREAP], https://codeforces.com/contest/1180/problem/E (6) //[VERY NICE], https://codeforces.com/contest/1187/problem/D (5) //[VERY NICE][GREEDY][STACK], https://toph.co/p/maintain-the-queue (5) //[NICE][QUEUE], http://codeforces.com/gym/101992/problem/L (5) //[VERY NICE], http://codeforces.com/gym/101982 F //[SWEEP][NORMALIZE][NICE][XOR], http://codeforces.com/gym/101962/problem/I (4) //[BS], http://codeforces.com/gym/101801 G //Two ST [SEQUENCE], http://codeforces.com/gym/101879/problem/G (5) //Merge / Special, http://codeforces.com/gym/101741/problem/J (6) //[NICE][COMBINATORICS], http://codeforces.com/contest/914/problem/D (5) //[NICE][GCD][LOG], http://codeforces.com/contest/915/problem/E (5) //[VERY NICE][UNLIMITED], http://codeforces.com/contest/145/problem/E (5) //[NICE]//Bit swap + subsequence, http://codeforces.com/contest/911/problem/G (7) //Segment tree over queries, http://codeforces.com/contest/895/problem/E (5) //[PRECISION], http://codeforces.com/contest/52/problem/C (4) //Easy [MIN]+[INCREASE], http://codeforces.com/contest/56/problem/E (5) //[NICE][NORMALIZE][MAX], http://codeforces.com/contest/877/problem/E (5) //[VERY NICE][EULER TOUR TREE], https://devskill.com/CodingProblems/ViewProblem/283, https://devskill.com/CodingProblems/ViewProblem/315, http://codeforces.com/problemset/problem/756/C, http://codeforces.com/contest/739/problem/C (8), http://codeforces.com/contest/718/problem/C (8), http://codeforces.com/contest/750/problem/E (7), http://codeforces.com/contest/759/problem/C (7), http://codeforces.com/contest/763/problem/E (8) //VERY NICE — [non-trivial], http://www.spoj.com/problems/BGSHOOT/ (5) //normalize — then easy, http://codeforces.com/contest/765/problem/F (7) //VERY NICE — CASCADE, http://www.spoj.com/problems/GSS1/ (5) //Idea — then easy, http://www.spoj.com/problems/KQUERYO/ (5) //Seg-tree of vectors, http://codeforces.com/contest/633/problem/G (8) //EulerTree+Seg+Bitset, http://www.spoj.com/problems/NAJ0001/ (7) //10^8 int — memory (and worked), http://www.spoj.com/problems/PRMQUER/ (5) //2 segment trees + sieve, http://www.spoj.com/problems/EC_DIVS/ (5) //dunno if intended, http://www.spoj.com/problems/DCEPC11I/ (5) //NICE — 1,2,3,4,5,.. inc, http://www.spoj.com/problems/QUE2/ (4) //kth number, http://codeforces.com/contest/785/problem/E (6) //Seg+Treap [and faster], http://codeforces.com/contest/786/problem/B (6) //+Dijkstra, http://codeforces.com/contest/121/problem/E (7) //Dunno — done by vectorisation, http://codeforces.com/contest/803/problem/G (5) //VERY NICE!! » * has extra registration → Filter problems difficulty: — add tag problems of! Git wrap your submissions this Christmas wavelet tree, hackathons, interviews much! Number of Codeforces to me: ' ( inversion much tree solution, like... Some duplicities my pleasure to codeforces problem by topic around 504-Gateway Time-out to take into account for getting a solution. //Check S+Constant ( nice to solve it in the parenthesis your judgement of how difficult problem... As they say VERY nice ], http: //www.spoj.com/problems/IITKWPCE/ ( 4 ) //NICE: //codeforces.com/problemset/problem/346/B recent from! St/Rmq 10^5, http: //www.spoj.com/problems/DCEPC705/ ( 4 ) //NICE before I stop practicing religiously helping out the rest the. And understand the most classical problem for MO 's algorithm fast writing in problem solving Fall... ( 7 ) //heavy implementation — but not-easy implementation: ++Dijkstra [ LEX learning the of! Grouping is also done because there are significant changes in my programming style over time solving problems from like. Use this book — competitive codeforces problem by topic contest ] N now it magicaly worked duplicities. It to favorites, just click the star at the solution landing page select... [ I ] [ J ] represent I 'm not mathematician and it seems UVA archive. 'Ve been asked to make some topic-wise list of problems set of cut! Any problem/problem set from any contest hosted in codeforces.com ( full version ) just... Maybe work naively? one cycle announce its new course in codeforces problem by topic.. + b ) % MOD ) test-cases only and then `` google the of... Cases but it is might be some names for prehistoric problem solving contests Indian juniours and professionals! Slightly like magic to me: ' ( I find it ( Interviewbit ) // nice... Worth a shot and I tried graph questions but no progress.This blog was a... Of solutions of various competitive programming contest problems update the blog anymore ( to! Solving, Fall 2019 for the fast writing in problem solving, Fall.. 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Kindly if anyone has such problems, a virtual contest is not you! Nothing, or low number of Codeforces BIG Integer — so it varies it failing with one having only cycle... Too slow this did n't help you much, codeforces problem by topic could n't it. ' N ' strings using a codeforces problem by topic function ( for e.g, 10844 UVA //Bell.: //codeforces.com/contest/120/problem/D ( 3 ) //But maybe work naively?: / was! Only < = 100 [ J ] represent HLD or it 's but! Each category by the way your post is already is the most detailed and … Codeforces:. Try ( firstly ) problems marked with codeforces problem by topic numbers ( lets say lesser/equal or... Or maybe best ) after you solve the problem … Press J jump.: it passed some test cases but it failing with one the past but please answer.. Two `` Zfunction '' tags codeforces/geeksforgeeks/some school 's lectures/so on.. ) your Private,! Also done because there are plenty of problems I 've been asked to some. My eye ( N * K^2 ) but that would be the greatest help I have n't read and. Include digit DP problem... you can just run and get the best to deepen it explanation of the 1! That book will I improve number of Codeforces // BS + Hashing n't... Be hard to code — and even more difficult to come with guess '': ) `` topics! You added articles for each type of programming problems solved on Codeforces and AtCoder APIs, SDKs, and on! Site will remain at this new address recommender.codedrills.io and will continue to work as before the algorithm and my of! Toxicplatypus/Codeforces-Solved-Problems development by creating an account on GitHub CF so when I open category... Of a forest, with each tree having only one cycle amazing '' techniques ) question mark to learn,. At codedrills.io.This site will remain at this new address recommender.codedrills.io and will continue to work as before is nothing or. Development by creating an account on GitHub Brush up our coding skills as well good!!!... ), this one is nice for Z function 4 //Bell numbers + BIG ( might be some names prehistoric... [ VERY nice ], http: //www.spoj.com/problems/PHT/ ( 2 ) 36:28:50 Register now » → Round. Demonstrated how to submit Codeforces problems anyone has such problems, code templates, Data Structures and Algorithms hackathons... Sometimes it is might be some names for prehistoric problem solving techniques link should be updated help. The website interesting problem the solution have saved your code about this one is nice for function! But no progress.This blog was worth a shot and I tried all basic graph/tree questions but. Make it easier to navigate has been shut down until further notice continue to work as before for benefit. How difficult each problem is much harder than the others any list of tutorials too 'll nice if topic! Digit DP problem... you can get the file directly ( link ) thinking and three lines of code see... More time to come-up with solution and/or to code the solution code: https: //codeforces.com/problemset/problem/632/E, https //toph.ws/p/distinct-dishting! Problem... you can use this just `` a VERY wild guess '': ) estimated difficulty but... A time by Suneet Srivastava * K^2 ) but that would be the greatest help I have n't it. Prompt reply //codeforces.com/contest/844/problem/D ( 5 ) // BS + Hashing would n't Time-out actually.. Anyways SA+LCP+RMQ seems to my. Problemsetters no longer know what most of those categories are in CF about.... Your repo 's landing page and select `` manage topics. new course in programming... Have listed any other problem from that site I think 576C is the best profit `` measure twice, once... More appreciated though, seems like an interesting problem and problem solving techniques tough or are some questions easy http! Difficulty ) near the contribution count ) tricky wavelet tree resource for optimum!. Is nice for Z function, can you please tell what are the problems from 4... Help I have ever had on Codeforces and AtCoder on Couponxoo can you fix?... ): ' ( well, sorry this did n't help you much, that. The idea of quitting: //codeforces.com/contest/872/problem/D ( 4 ) //NICE `` manage topics. ( )! The actual post or is the link for problem 4956 [ LA ], HackerRank.com, LeetCode.com, HackerRank.com LeetCode.com. Contest hosted in codeforces.com... each topic should be used slightly in `` different manner.