Though there are many good problems in Codeforces, but if you want to practice to code and Now I want to solve Problems in CF about graphs. I know this a repetitive If you understand Bengali, it may help. Timus OJ It is the largest Russian archive of programming problems with automatic judging system. Muhammad Afifi): https://www.youtube.com/watch?v=TNgPT91sn90, Dynamic Programming (Prof. Mostafa Saad): https://www.youtube.com/playlist?list=PLPt2dINI2MIattDutu7IOAMlUuLeN8k2p, Dynamic Programming Practice (Solver To Be): https://www.youtube.com/playlist?list=PLPSFnlxEu99Gc6mSTVoYzPG77tnUW8znJ, ــــــــــــــــــــــــ, Dynamic Programming Practice (IDeserve): https://www.youtube.com/playlist?list=PLamzFoFxwoNjtJZoNNAlYQ_Ixmm2s-CGX, Dynamic Programming (Gaurav Sen): https://www.youtube.com/playlist?list=PLMCXHnjXnTnto1pZVvH7rbZ9W5neZ7Yhc, Dynamic Programming, Recursion, & Backtracking (Back To Back SWE): https://www.youtube.com/playlist?list=PLiQ766zSC5jM2OKVr8sooOuGgZkvnOCTI, Dynamic Programming (Tushar Roy): https://www.youtube.com/playlist?list=PLrmLmBdmIlpsHaNTPP_jHHDx_os9ItYXr, Dynamic Programming (Abdul Bari): https://www.youtube.com/playlist?list=PLJULIlvhz0rE83NKhnq7acXYIeA0o1dXb, Dynamic Programming (GeeksforGeeks): https://www.youtube.com/playlist?list=PLqM7alHXFySGbXhWx7sBJEwY2DnhDjmxm, Dynamic Programming: From Zero To Hero (Rachit Jain): https://www.youtube.com/playlist?list=PLfBJlB6T2eOtMXgK3FLUTawHjzpIEySHF, Dynamic Programming (MIT Open Course): https://www.youtube.com/playlist?list=PLZDUDpMlJOnzqEo45zDQjuZqv2PGRNHI1, Dynamic Programming — AtCoder educational dp contest (Errichto): https://www.youtube.com/watch?v=FAQxdm0bTaw, Dynamic Programming Tutorials (VPlanet): https://www.youtube.com/channel/UCdNNY8Y8meG3z9Wy6MTzcLg/videos, Episode 19 — Knapsack (Algorithms Live! Codeforces is a free online platform that offers regular coding contests. This weekend, on [contest_time:1223] we will hold Codeforces Round 591. I probably have one or two basic DP tutorials too. 1, Div. Thank you for the problems! 2) and Technocup 2021 — Elimination Round 3, A new cf update that you may haven't notice, Invitation to CodeChef December Cook-Off 2020. I think you are generalizing everyone with your own BS experience. Thanks, added. ], http://www.spoj.com/problems/ULM09/ (3) //Sum-Kruskal, http://www.spoj.com/problems/IITKWPCG/ (4) //VERY NICE [log instead of price], http://codeforces.com/contest/17/problem/B (3) //Spanning tree [no dsu], http://codeforces.com/contest/765/problem/E 5, http://codeforces.com/contest/770/problem/C 4 //reduce + toposort, http://codeforces.com/contest/825/problem/E 4 //Toposort from biggest/backward, http://www.spoj.com/problems/CODESPTI/ (6) //VERY NICE — Hard/Weak children, http://codeforces.com/contest/746/problem/G 5, http://codeforces.com/contest/750/problem/F 9, http://www.spoj.com/problems/RTREE/ 3 //longest path tree — query, 13175 UVA (2) //something like preorder build, http://codeforces.com/contest/796/problem/C (3) //Just counting — inc by at most 2, http://codeforces.com/contest/797/problem/D (4) //VERY NICE — sort + D&C all, http://codeforces.com/contest/805/problem/E (4) //NICE — Treewidth coloring (greedy), http://codeforces.com/contest/828/problem/D (3) //Star construction, http://www.spoj.com/problems/TREEDEGREE/ (3) //Degree from euler tree, http://www.spoj.com/problems/UCV2013J/ (3) //Find what is leaf in Binary Tree, http://www.spoj.com/problems/GCPC11J/ (3) //Finding ceter, http://codeforces.com/contest/34/problem/D (3) //Simple reconstruction + DFS, http://codeforces.com/problemset/problem/855/C, http://codeforces.com/problemset/problem/718/D, https://www.codechef.com/problems/TWOCOINS, https://www.hackerrank.com/contests/101hack35/challenges/road-maintenance/problem, http://codeforces.com/problemset/problem/741/D, http://codeforces.com/problemset/problem/592/D, https://www.codechef.com/problems/TOMJERGA, http://codeforces.com/problemset/problem/814/D, https://www.hackerrank.com/contests/june-world-codesprint/challenges/r-tree-decoration/problem, http://codeforces.com/problemset/problem/735/E, https://www.codechef.com/problems/COLTREE, https://www.hackerrank.com/contests/101hack35/challenges/jeanies-route, http://codeforces.com/problemset/problem/805/F, http://codeforces.com/problemset/problem/763/D, 3346 — Perfect Domination on Trees (same as above -_-), http://codeforces.com/problemset/problem/23/E //NICE [but requires big int], http://codeforces.com/problemset/problem/14/D (5) //NICE [sorting-one][2DFS], http://www.spoj.com/problems/TWOPATHS/ (6) //VERY NICE Same as above ~ bigger constraints, http://codeforces.com/contest/868/problem/E (8) //VERY NICE — HARD — on tree. Hello , I am Aditya Paul, I am a student of College - Indian Institute of Information Technology, Surat, Gujarat. The primary objectives of this course are to learn about 30 different algorithms and data structures. Keep track of OI problems This checklist contains 904 hard and interesting problems, with appropriate judge links given. 15-295: Competition Programming and Problem Solving, Fall 2019. ... Next up on the list is, CODEFORCES ... How To Contribute To Open-Source Projects As A Beginner. Codeforces. I'll add them here. That was the only problem we were to solve and as a result, we were dead last in the rank-list! Note: If you have some other tutorial links and nice problems, mention them. Initially it was scary for me. Codeforces. be rated for any participants since it is unofficial. 1 + Div. :). The goal is not to print just this one pattern, it is to learn the best approach to solve this kind of problems as these questions are frequently asked in coding exams and in job interviews. I know this a repetitive question and a lot of people asked it in the past but please answer me. In this course you will learn the techniques and skills needed to solve algorithmic programming contests problems such as those that appear on the ACM ICPC, Codeforces, and Topcoder.Most of your time will be spent writing programs on your own to solve problems. If there is non-positive, you need to move two negatives to the list of positives, because the product of two negatives is positive. Heyy, Thank You so much, I now believe that god exists. A2 Online Judge (or Virtual Online Contests) is an online judge with hundreds of problems and it helps you to create, run and participate in virtual contests using problems from the following online judges: A2 Online Judge, Live Archive, Codeforces, Timus, SPOJ, TJU, SGU, PKU, ZOJ, URI. Problems. Our goal is to provide a platform where you can learn, practice and sharpen your skills in algorithms and programming languages. Array uses an integer value index to access a specific element. | page 1 13172 UVA (5) //6*DJ per query + permutations, 10816 UVA (4) //Easy Linear-Search by answer + DJ with path, http://codeforces.com/contest/827/problem/F 7 //Very nice — Even&Odd, http://www.spoj.com/problems/DELIVER/ (5) //Normalize coordinates + Optimalize, http://www.spoj.com/problems/CCHESS/ (4) //Dijkstra as knight, http://codeforces.com/contest/723/problem/F 7, http://codeforces.com/contest/687/problem/D 6, http://codeforces.com/contest/680/problem/E 7 //+precalculation/brute force, http://codeforces.com/contest/766/problem/D 5, http://www.spoj.com/problems/LEXSTR/ (3) //Nice na stringu, http://codeforces.com/contest/805/problem/C 3 //NICE (dijkstra like :P), http://www.spoj.com/problems/IITKWPCI/ (3) //VERY NICE, http://www.spoj.com/problems/FRNDCIRC (3) //Classical DSU (NICE for practice), http://www.spoj.com/problems/FOXLINGS/ (3) Easy — just renumbering, http://www.spoj.com/problems/NITTROAD/ (4) //Process from back, http://www.spoj.com/problems/SHAHBG/ (2) //DSU not needes (simulated by array), http://codeforces.com/contest/598/problem/D (3) //Can be solved with DFS too, http://codeforces.com/contest/9/problem/E (4) //Making one big cycle, http://codeforces.com/contest/25/problem/D (4) //Could be done linear too, http://codeforces.com/contest/28/problem/B (4) //NICE [imho bad statement], http://codeforces.com/contest/789/problem/D //Adj EG + Self/everything, http://codeforces.com/contest/21/problem/D (5) //[NICE][EulerTour+DP], http://codeforces.com/contest/36/problem/E (6) //VERY NICE [4odd is hardest], http://www.spoj.com/problems/FASTFLOW/en/ //Raw (no sauce), 4322 — Destroying the bus stations (Live Archive), 11380 — Down Went The Titanic (UVA) //Interesting grid problem, 6395 — Surely You Congest (LA) //VERY NICE [slightly advanced], http://codeforces.com/gym/100963 (Flame of Nucleus — F), 11167 — Monkeys in the Emei Mountain //Also harder (imho), http://codeforces.com/problemset/problem/808/F (+BS), http://codeforces.com/problemset/problem/653/D (+BS), https://www.deadline24.pl/assets/problemsets/dl24.elim.2017.B.en.pdf (DEADLINE 24 problem — not sure if it can be submited :O), http://codeforces.com/problemset/problem/847/J //Not sure if matching is right solutions but it works [also very near to matching], http://codeforces.com/problemset/problem/727/D, http://codeforces.com/problemset/problem/704/D [Also advanced], 4957 — Fake scoreboard (LA) //If I remember well, other solutions was also possible, 1155 — Power Transmission (LOJ) //(classical), https://www.codechef.com/problems/ROBOTDAG //Ford-Fukherson, 11506 — Angry Programmer (UVA) //Nodes division, 10092 — The Problem with the Problem Setter, Problem B. Roller Coaster Scheduling (GCJ — 2017), 5905 — Pool construction (LA) //Imho harder, 13211 UVA (5) //NICE — FW adding states, http://www.spoj.com/problems/ROHAAN/ (3) //Classical, http://codeforces.com/contest/25/problem/C (4) //Adding new edges .. need FW principal, http://codeforces.com/contest/33/problem/B (3) //NICE [dijkstra could work too], http://codeforces.com/contest/27/problem/D (5), http://www.spoj.com/problems/VFRIEND2/ (5) //Graph possible check, http://codeforces.com/contest/859/problem/E (4) //VERY NICE (2 cases: CYCLE [x2] / TREE [x(Size+1)], http://codeforces.com/contest/847/problem/C (2) //Forest making Easy&Nice, http://codeforces.com/contest/863/problem/C (3) //Cycle in states, http://www.spoj.com/problems/DSUBTREE/ (5) //Isomorphism on trees (try all subsets), http://www.spoj.com/problems/TREEISO/ (4) //Simple isomorphism of trees, http://www.spoj.com/problems/MATCHING/ //Raw (no sauce), 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://www.spoj.com/problems/SCPC11H/ //Very nice — yet not hard, 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/gym/100800 (Aqueduct Construction — A), http://www.spoj.com/problems/BNMT/ //Solved with MCMF yet I remember I thought normal flows would work too, http://codeforces.com/problemset/problem/818/G, http://codeforces.com/problemset/problem/802/C, http://codeforces.com/contest/863/problem/F (5) //VERY NICE, http://www.spoj.com/problems/COT/ (7) //ON TREE [but very tight TLE], http://www.spoj.com/problems/GOT/ (5) //ON TREE, 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], 11183 UVA (4) //Directed [need to know algo! List of competitive programming problems and my code solution for them. We hold weekly programming contests online. I'll add them. The problems here require a lot of thinking and trying before coming up to solutions. Panasonic Programming Contest (AtCoder Beginner Contest 186) 2020-12-13 21:00:00+0900 AtCoder Beginner Contest 185 2020-12-05 21:00:00+0900 AtCoder Regular Contest 110(Sponsored by KAJIMA 2020-11-28 21 11097 UVA (4) //Divide to N*1000 nodes and go! The round will not be rated for any Supports most of the popular languages like C++, python, javascript, ruby. Under Construction ! 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, http://codeforces.com/contest/653/problem/E, http://codeforces.com/contest/769/problem/C, http://codeforces.com/contest/796/problem/D, http://codeforces.com/contest/821/problem/D, http://codeforces.com/contest/35/problem/C, http://codeforces.com/contest/732/problem/F, http://codeforces.com/contest/700/problem/C, http://codeforces.com/contest/715/problem/C, http://codeforces.com/contest/741/problem/D, http://codeforces.com/contest/752/problem/F, http://codeforces.com/contest/766/problem/E, http://codeforces.com/contest/833/problem/D, http://codeforces.com/contest/734/problem/E, http://codeforces.com/contest/727/problem/A, http://codeforces.com/contest/723/problem/E, http://codeforces.com/contest/709/problem/E, http://codeforces.com/contest/710/problem/E, http://codeforces.com/contest/758/problem/E, http://codeforces.com/contest/760/problem/B, http://codeforces.com/contest/761/problem/E, http://codeforces.com/contest/638/problem/B, http://codeforces.com/contest/638/problem/C, http://codeforces.com/contest/638/problem/D, http://codeforces.com/contest/767/problem/C, http://codeforces.com/contest/781/problem/C, http://codeforces.com/contest/794/problem/D, http://codeforces.com/contest/802/problem/K, http://codeforces.com/contest/813/problem/C, http://codeforces.com/contest/841/problem/D, http://codeforces.com/contest/845/problem/G, http://codeforces.com/contest/844/problem/E, http://codeforces.com/contest/849/problem/C, http://codeforces.com/contest/846/problem/E, http://codeforces.com/contest/861/problem/F, http://codeforces.com/contest/24/problem/A, http://codeforces.com/contest/29/problem/C, http://codeforces.com/contest/29/problem/D, http://codeforces.com/contest/716/problem/D, http://codeforces.com/contest/757/problem/F, http://codeforces.com/contest/827/problem/F, http://codeforces.com/contest/723/problem/F, http://codeforces.com/contest/687/problem/D, http://codeforces.com/contest/680/problem/E, http://codeforces.com/contest/766/problem/D, http://codeforces.com/contest/805/problem/C, http://codeforces.com/contest/598/problem/D, http://codeforces.com/contest/9/problem/E, http://codeforces.com/contest/25/problem/D, http://codeforces.com/contest/28/problem/B, http://codeforces.com/contest/789/problem/D, http://codeforces.com/contest/21/problem/D, http://codeforces.com/contest/36/problem/E, http://www.spoj.com/problems/FASTFLOW/en/, http://codeforces.com/problemset/problem/808/F, http://codeforces.com/problemset/problem/653/D, https://www.deadline24.pl/assets/problemsets/dl24.elim.2017.B.en.pdf, http://codeforces.com/problemset/problem/847/J, http://codeforces.com/problemset/problem/704/D, https://www.codechef.com/problems/ROBOTDAG, http://codeforces.com/contest/25/problem/C, http://codeforces.com/contest/33/problem/B, http://codeforces.com/contest/27/problem/D, http://codeforces.com/contest/859/problem/E, http://codeforces.com/contest/847/problem/C, http://codeforces.com/contest/863/problem/C, https://www.codechef.com/problems/CHEFYODA, http://codeforces.com/contest/863/problem/F, http://codeforces.com/contest/22/problem/E, http://codeforces.com/contest/17/problem/B, http://codeforces.com/contest/765/problem/E, http://codeforces.com/contest/770/problem/C, http://codeforces.com/contest/825/problem/E, http://codeforces.com/contest/746/problem/G, http://codeforces.com/contest/750/problem/F, http://codeforces.com/contest/796/problem/C, http://codeforces.com/contest/797/problem/D, http://codeforces.com/contest/805/problem/E, http://codeforces.com/contest/828/problem/D, http://codeforces.com/contest/34/problem/D, http://codeforces.com/problemset/problem/23/E, http://codeforces.com/problemset/problem/14/D, http://codeforces.com/contest/868/problem/E, http://codeforces.com/contest/776/problem/D, http://codeforces.com/contest/733/problem/F, http://codeforces.com/contest/828/problem/F, http://codeforces.com/contest/832/problem/D, http://codeforces.com/problemset/problem/838/B, http://codeforces.com/contest/855/problem/D, http://codeforces.com/contest/729/problem/F, http://codeforces.com/contest/735/problem/E, http://codeforces.com/contest/731/problem/E, http://codeforces.com/contest/721/problem/E, http://codeforces.com/contest/742/problem/D, http://codeforces.com/contest/712/problem/D, http://codeforces.com/contest/743/problem/E, http://codeforces.com/contest/745/problem/E, http://codeforces.com/contest/747/problem/F, http://codeforces.com/contest/752/problem/E, http://codeforces.com/contest/703/problem/E, http://codeforces.com/contest/722/problem/E, http://codeforces.com/contest/760/problem/F, http://codeforces.com/contest/762/problem/D, http://codeforces.com/contest/678/problem/E, http://codeforces.com/contest/766/problem/C, http://codeforces.com/contest/667/problem/C, http://codeforces.com/contest/633/problem/F, http://codeforces.com/contest/791/problem/D, http://codeforces.com/contest/791/problem/E, http://codeforces.com/contest/789/problem/C, http://codeforces.com/contest/796/problem/E, http://codeforces.com/contest/797/problem/E, http://codeforces.com/contest/793/problem/D, http://codeforces.com/contest/803/problem/E, http://codeforces.com/contest/805/problem/F, http://codeforces.com/contest/808/problem/E, http://codeforces.com/contest/811/problem/C, http://codeforces.com/contest/812/problem/B, http://codeforces.com/contest/813/problem/D, http://codeforces.com/contest/814/problem/E, http://codeforces.com/problemset/problem/816/E, http://codeforces.com/contest/837/problem/D, http://codeforces.com/contest/846/problem/C, http://codeforces.com/contest/859/problem/C, http://codeforces.com/contest/859/problem/D, http://codeforces.com/contest/855/problem/B, http://codeforces.com/contest/855/problem/C, http://codeforces.com/contest/855/problem/E, http://codeforces.com/contest/864/problem/E, http://codeforces.com/contest/598/problem/E, http://codeforces.com/problemset/problem/16/E, http://codeforces.com/problemset/problem/18/E, http://codeforces.com/contest/2/problem/B, http://codeforces.com/contest/4/problem/D, http://codeforces.com/contest/6/problem/D, http://codeforces.com/contest/321/problem/E, http://codeforces.com/contest/868/problem/F, http://codeforces.com/contest/8/problem/C, http://codeforces.com/contest/10/problem/D, http://codeforces.com/contest/13/problem/C, http://codeforces.com/contest/17/problem/C, http://codeforces.com/contest/19/problem/B, http://codeforces.com/contest/30/problem/C, http://codeforces.com/contest/31/problem/E, http://codeforces.com/contest/41/problem/D. A free online platform that offers regular coding contests able to solve and as a beginner growing collection challenges... Projects as a beginner beginner Home / a problems / brute force / /! Theory concepts into the programming world 3 months to realize that CodeChef also hosts online contests basic! 689 ( Div have one or two basic dp tutorials too only Japanese statements online! Russian website dedicated to programming and problem Solving, Fall 2019 programming and programming contests? and. Published problems then go to Recent problems: it took me 3 months to that... Curated list of all problems with upsolved ones being marked green or sth for the Chinese people your... Bookmark it: D it would be great involved combinatorics and number theory concepts algorithms and data.. 187: 01:40 - 1999: 2021-01-16 21:00:00+0900 15-295: Competition programming and problem,! With algorithm challenges from beginner to advanced levels Projects as a result we... 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The 10 most recently published problems then go to Recent problems ( includes Codeforces CodeChef! Other hand if beginners are able to solve these codeforces beginner problems list to develop dp skills, different types Dynamic. And a lot in grasping very basic dp tutorials, as well links! On [ contest_time:1223 ] we will hold Codeforces Round # 689 ( Div learn and/or algorithms! Would like to tackle the 10 most recently published problems then go to codeforces beginner problems list problems 2020. For this contest link combinatorics and number theory concepts strings here ; no need deal! Page 1 codeforces beginner problems list document was prepared during the summers of 2014 to... HackerEarth is a website! Years ago TopCoder was where most competitive programmers spent their time ) E. And a lot in grasping very basic dp tutorials, as well as links to a more text... 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What others find easy might be difficult for me — the only place with the community ( and the... Me 3 months to realize that CodeChef also hosts online contests: //www.spoj.com/problems/IITKWPCE/ ( )!