Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x12392
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x19134
1850E	Cardboard for Pictures binary search, geometry, implementation, math	1100	x23207
1850D	Balanced Round brute force, greedy, implementation, sortings	900	x36878
1850C	Word on the Paper implementation, strings	800	x44227
1850B	Ten Words of Wisdom implementation, sortings	800	x42826
1850A	To My Critics implementation, sortings	800	x56027
1849F	XOR Partition binary search, bitmasks, data structures, divide and conquer, greedy, trees	2700	x720
1849E	Max to the Right of Min binary search, data structures, divide and conquer, dp, dsu, two pointers	2300	x1646
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x8503
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x10522
1849B	Monsters greedy, math, sortings	1000	x25789
1849A	Morning Sandwich implementation, math	800	x27913
1848F	Vika and Wiki binary search, bitmasks, combinatorics, divide and conquer, dp, math	2400	x1580
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x788
1848D	Vika and Bonuses binary search, brute force, math, ternary search	2200	x2619
1848C	Vika and Price Tags math, number theory	1800	x6297
1848B	Vika and the Bridge binary search, data structures, greedy, implementation, math, sortings	1200	x14979
1848A	Vika and Her Friends games, math	900	x16830
1847F	The Boss's Identity binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings	2500	x893
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x329
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3780
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12883
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x19983
1847A	The Man who became a God greedy, sortings	800	x21996
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4387
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3116
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x7029
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x16914
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x19383
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x18913
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x26863
1846A	Rudolph and Cut the Rope implementation, math	800	x32481
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x371
1845E	Boxes and Balls dp, implementation, math	2500	x1322
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7823
1845C	Strong Password binary search, dp, greedy, strings	1400	x14261
1845B	Come Together geometry, implementation, math	900	x21601
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x27556
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x137
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x726
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x401
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x779
1844E	Great Grids 2-sat, constructive algorithms, dfs and similar, dsu, graphs	2400	x1877
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x12290
1844C	Particles dp, greedy, implementation, math	1300	x15662
1844B	Permutations & Primes constructive algorithms, math	1000	x18226
1844A	Subtraction Game constructive algorithms, games	800	x24531
1843F2	Omsk Metro (hard version) data structures, dfs and similar, divide and conquer, dp, math, trees	2300	x1600
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5310
1843E	Tracking Segments binary search, brute force, data structures, two pointers	1600	x12337
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x18041
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x33029
1843B	Long Long greedy, math, two pointers	800	x28979
1843A	Sasha and Array Coloring greedy, sortings, two pointers	800	x34208
1842I	Tenzing and Necklace divide and conquer, dp, greedy	3500	x119
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x669
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x1050
1842F	Tenzing and Tree dfs and similar, greedy, shortest paths, sortings, trees	2500	x1326
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1622
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x4082
1842C	Tenzing and Balls dp	1500	x12804
1842B	Tenzing and Books bitmasks, greedy, math	1100	x17083
1842A	Tenzing and Tsondu games, math	800	x19767
1841F	Monocarp and a Strategic Game geometry, sortings, two pointers	2700	x489
1841E	Fill the Matrix data structures, greedy, math	2200	x2016
1841D	Pairs of Segments data structures, greedy, sortings, two pointers	2000	x4399
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7822
1841B	Keep it Beautiful implementation	1000	x21488
1841A	Game with Board constructive algorithms, games	800	x24686
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x962
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2371
1840F	Railguns brute force, dfs and similar, dp, graphs	2200	x1817
1840E	Character Blocking data structures, hashing, implementation	1600	x8045
1840D	Wooden Toy Festival binary search, greedy, sortings	1400	x13756
1840C	Ski Resort combinatorics, math, two pointers	1000	x27722
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x22446
1840A	Cipher Shifer implementation, strings, two pointers	800	x34007
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1221
1839D	Ball Sorting data structures, dp, sortings	2100	x2322
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11972
1839B	Lamps greedy, sortings	1100	x15126
1839A	The Good Array greedy, implementation, math	800	x17470
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x315
1838E	Count Supersequences combinatorics, dp, math	2500	x1478
1838D	Bracket Walk data structures, greedy, strings	2100	x3256
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x14466
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x16403
1838A	Blackboard List constructive algorithms, math	800	x21503
1837F	Editorial for Two binary search, data structures, greedy, implementation	2400	x2192
1837E	Playoff Fixing combinatorics, trees	2200	x2184
1837D	Bracket Coloring constructive algorithms, greedy	1400	x14760
1837C	Best Binary String constructive algorithms, greedy	1000	x21967
1837B	Comparison String greedy	900	x29693
1837A	Grasshopper on a Line constructive algorithms, math	800	x32440
1836B	Astrophysicists greedy, math	1100	x12639
1836A	Destroyer implementation, sortings	800	x20298
1835F	Good Graph bitmasks, dfs and similar, graph matchings, graphs, implementation	3500	x164
1835E	Old Mobile combinatorics, dp, probabilities	3500	x227
1835D	Doctor's Brown Hypothesis dfs and similar, graphs, math, number theory	2900	x495