Problemset - Codeforces

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Codeforces Round 978 (Div. 2)
3 days
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Problems

#	Name
2021E3	Digital Village (Extreme Version) data structures, dfs and similar, dp, dsu, graphs, greedy, math, trees		x244
2021E2	Digital Village (Hard Version) data structures, dp, dsu, graphs, math, trees		x498
2021E1	Digital Village (Easy Version) brute force, data structures, dp, dsu, graphs, greedy, implementation, math, shortest paths, trees		x1046
2021D	Boss, Thirsty dp, greedy, implementation		x361
2021C2	Adjust The Presentation (Hard Version) constructive algorithms, data structures, greedy, implementation, sortings		x2605
2021C1	Adjust The Presentation (Easy Version) constructive algorithms, greedy		x8910
2021B	Maximize Mex brute force, greedy, math, number theory		x10761
2021A	Meaning Mean data structures, greedy, math, sortings		x14873
2020F	Count Leaves dp, math, number theory	2900	x142
2020E	Expected Power bitmasks, dp, math, probabilities	2000	x2503
2020D	Connect the Dots brute force, dp, dsu, graphs, math, trees	1800	x4686
2020C	Bitwise Balancing bitmasks, hashing, implementation, math, schedules, ternary search	1400	x10369
2020B	Brightness Begins binary search, math	1200	x14152
2020A	Find Minimum Operations bitmasks, brute force, greedy, math, number theory	800	x19482
2019B	All Pairs Segments implementation, math	1200	x12347
2019A	Max Plus Size brute force, dp, greedy	800	x20340
2018F3	Speedbreaker Counting (Hard Version) dp, greedy, math	3100	x137
2018F2	Speedbreaker Counting (Medium Version) dp, greedy, math	3000	x136
2018F1	Speedbreaker Counting (Easy Version) combinatorics, dp, greedy, math	2900	x172
2018E2	Complex Segments (Hard Version) binary search, data structures, divide and conquer, dsu, greedy, math, sortings	3400	x70
2018E1	Complex Segments (Easy Version) binary search, data structures, divide and conquer, dsu, greedy, math, sortings	3300	x106
2018D	Max Plus Min Plus Size data structures, dp, dsu, greedy, implementation, matrices, sortings	2200	x1343
2018C	Tree Pruning brute force, dfs and similar, greedy, sortings, trees	1700	x5202
2018B	Speedbreaker binary search, data structures, dp, greedy, implementation, two pointers	1900	x3263
2018A	Cards Partition 2-sat, brute force, greedy, implementation, math	1600	x8846
2014H	Robin Hood Archery data structures, divide and conquer, greedy, hashing	1900	x3024
2014G	Milky Days brute force, data structures, greedy, implementation	2200	x1069
2014F	Sheriff's Defense dfs and similar, dp, greedy, trees	2000	x3060
2014E	Rendez-vous de Marian et Robin dfs and similar, graphs, shortest paths	1800	x4887
2014D	Robert Hood and Mrs Hood brute force, data structures, greedy, sortings	1400	x10640
2014C	Robin Hood in Town binary search, greedy, math	1100	x19208
2014B	Robin Hood and the Major Oak math	800	x25487
2014A	Robin Helps greedy, implementation	800	x32835
2013F2	Game in Tree (Hard Version) binary search, data structures, trees	3500	x81
2013F1	Game in Tree (Easy Version) binary search, brute force, data structures, dp, games, greedy, implementation, trees	2700	x414
2013E	Prefix GCD brute force, dp, greedy, math, number theory	2200	x2777
2013D	Minimize the Difference binary search, greedy	1900	x5365
2013C	Password Cracking constructive algorithms, interactive, strings	1400	x10693
2013B	Battle for Survive constructive algorithms, greedy, math	900	x20899
2013A	Zhan's Blender constructive algorithms, math	800	x25000
2011I	Stack and Queue *special problem, data structures, divide and conquer		x4
2011H	Strange Matrix *special problem, graphs, greedy		x33
2011G	Removal of a Permutation *special problem		x24
2011F	Good Subarray *special problem, data structures, greedy		x95
2011E	Rock-Paper-Scissors Bot *special problem, greedy, strings		x143
2011D	Among Wolves *special problem		x244
2011C	Split the Expression *special problem		x326
2011B	Shuffle *special problem		x591
2011A	Problem Solving *special problem		x951
2010C2	Message Transmission Error (hard version) hashing, string suffix structures, strings, two pointers	1700	x2765
2010C1	Message Transmission Error (easy version) brute force, strings	1400	x6347
2010B	Three Brothers brute force, implementation, math	800	x17799
2010A	Alternating Sum of Numbers brute force, implementation, math	800	x15024
2009G3	Yunli's Subarray Queries (extreme version) data structures, dp, implementation	2700	x285
2009G2	Yunli's Subarray Queries (hard version) binary search, data structures, dp	2200	x1080
2009G1	Yunli's Subarray Queries (easy version) binary search, data structures, two pointers	1900	x3492
2009F	Firefly's Queries bitmasks, data structures, flows, math	1700	x6011
2009E	Klee's SUPER DUPER LARGE Array!!! binary search, math, ternary search	1400	x12148
2009D	Satyam and Counting geometry, math	1400	x13217
2009C	The Legend of Freya the Frog implementation, math	1100	x23930
2009B	osu!mania brute force, implementation	800	x38673
2009A	Minimize! brute force, math	800	x46535
2008H	Sakurako's Test binary search, brute force, greedy, math, number theory	2100	x2653
2008G	Sakurako's Task binary search, greedy, math, number theory	1800	x4749
2008F	Sakurako's Box combinatorics, math, number theory	1400	x11765
2008E	Alternating String brute force, data structures, dp, greedy, implementation, strings	1500	x9172
2008D	Sakurako's Hobby dp, dsu, graphs, math	1100	x18200
2008C	Longest Good Array binary search, brute force, math	800	x28540
2008B	Square or Not brute force, math, strings	800	x27127
2008A	Sakurako's Exam brute force, constructive algorithms, greedy, math	800	x33020
2007C	Dora and C++ math, number theory	1500	x11430
2007B	Index and Maximum Value data structures, greedy	900	x20094
2007A	Dora's Set greedy, math, number theory	800	x21809
2006F	Dora's Paint brute force, combinatorics, constructive algorithms, graphs, implementation	3500	x98
2006E	Iris's Full Binary Tree brute force, data structures, dfs and similar, trees	3100	x206
2006D	Iris and Adjacent Products data structures, greedy, implementation, math	2600	x612
2006C	Eri and Expanded Sets data structures, divide and conquer, math, number theory, two pointers	2300	x1528
2006B	Iris and the Tree brute force, data structures, dfs and similar, dsu, math, trees	1800	x3066
2006A	Iris and Game on the Tree constructive algorithms, dfs and similar, games, graphs, greedy, trees	1700	x6300
2005E2	Subtangle Game (Hard Version) data structures, dp, games, greedy, implementation	2500	x704
2005E1	Subtangle Game (Easy Version) dp, games, greedy, implementation	2100	x2475
2005D	Alter the GCD binary search, brute force, data structures, divide and conquer, implementation, number theory	2400	x765
2005C	Lazy Narek dp, implementation, strings	1800	x6541
2005B2	The Strict Teacher (Hard Version) binary search, greedy, math, sortings	1200	x16012
2005B1	The Strict Teacher (Easy Version) greedy, math, sortings	1000	x18366
2005A	Simple Palindrome combinatorics, constructive algorithms, greedy, math	900	x20365
2004G	Substring Compression data structures, dp, matrices	3200	x281
2004F	Make a Palindrome binary search, brute force, data structures, greedy, math	2600	x1092
2004E	Not a Nim Problem brute force, games, math, number theory	2100	x3867
2004D	Colored Portals binary search, brute force, data structures, graphs, greedy, implementation, shortest paths	1600	x10227
2004C	Splitting Items games, greedy, sortings	1100	x22499
2004B	Game with Doors brute force, greedy	1000	x24880
2004A	Closest Point implementation, math	800	x29298
2003F	Turtle and Three Sequences brute force, data structures, dp, greedy, math, probabilities, two pointers	2800	x379
2003E2	Turtle and Inversions (Hard Version) brute force, data structures, divide and conquer, dp, greedy, math, two pointers	2700	x491
2003E1	Turtle and Inversions (Easy Version) brute force, divide and conquer, dp, greedy, math	2600	x690
2003D2	Turtle and a MEX Problem (Hard Version) dfs and similar, dp, graphs, greedy, implementation, math	2100	x3820
2003D1	Turtle and a MEX Problem (Easy Version) greedy, math	1500	x10633
2003C	Turtle and Good Pairs constructive algorithms, greedy, sortings, strings	1200	x17415
2003B	Turtle and Piggy Are Playing a Game 2 games, greedy, sortings	800	x24375

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