Problemset - Codeforces

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Problems

#	Name
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2028
1783D	Different Arrays brute force, dp, implementation	2000	x4182
1783C	Yet Another Tournament binary search, greedy, sortings	1700	x8815
1783B	Matrix of Differences constructive algorithms, math	1100	x17166
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x27256
1781H2	Window Signals (hard version)	3500	x86
1781H1	Window Signals (easy version)	3200	x112
1781G	Diverse Coloring constructive algorithms, trees	3200	x214
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x733
1781E	Rectangle Shrinking binary search, brute force, data structures, greedy, implementation, two pointers	2300	x1265
1781D	Many Perfect Squares brute force, math, number theory	1800	x5241
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7048
1781B	Going to the Cinema brute force, greedy, sortings	1000	x13222
1781A	Parallel Projection geometry, math	800	x14851
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x671
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1372
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1305
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4644
1780B	GCD Partition brute force, greedy, math, number theory	1100	x16553
1780A	Hayato and School constructive algorithms, greedy	800	x21072
1779H	Olympic Team Building brute force, meet-in-the-middle	3500	x131
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x301
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1218
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1688
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7497
1779C	Least Prefix Sum data structures, greedy	1600	x11819
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23011
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22892
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x598
1778E	The Tree Has Fallen! bitmasks, dfs and similar, math, trees	2500	x822
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2558
1778C	Flexible String bitmasks, brute force, strings	1600	x7665
1778B	The Forbidden Permutation greedy, math	1300	x12905
1778A	Flip Flop Sum greedy, implementation	800	x23772
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees	2400	x818
1777E	Edge Reverse binary search, dfs and similar, graphs, trees	2200	x1696
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3213
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x7813
1777B	Emordnilap combinatorics, greedy, math	900	x16583
1777A	Everybody Likes Good Arrays! greedy, math	800	x21239
1776N	Count Permutations math	3500	x71
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x351
1776L	Controllers binary search, math	1500	x5201
1776K	Uniform Chemistry dp, math	3200	x64
1776J	Italian Data Centers graphs, shortest paths	2500	x608
1776I	Spinach Pizza games, geometry, greedy, interactive	2500	x640
1776H	Beppa and SwerChat two pointers	1300	x6022
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1953
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3228
1776E	Crossing the Railways data structures, dp	3500	x62
1776D	Teamwork constructive algorithms, greedy, math	2800	x339
1776C	Library game games, greedy, interactive, sortings	2500	x756
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1243
1776A	Walking Boy greedy	800	x6768
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x741
1775E	The Human Equation greedy, implementation	2100	x3025
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x5758
1775C	Interesting Sequence bitmasks, math	1600	x9649
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12547
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x18271
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x19311
1774H	Maximum Permutation constructive algorithms	3500	x129
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x366
1774F2	Magician and Pigs (Hard Version) binary search, brute force, data structures, implementation	2700	x641
1774F1	Magician and Pigs (Easy Version) brute force, data structures, implementation	2400	x1020
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3311
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7427
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11559
1774B	Coloring constructive algorithms, greedy, math	1500	x11579
1774A	Add Plus Minus Sign constructive algorithms, math	800	x21942
1773L	Lisa's Sequences dp	3500	x28
1773K	King's Puzzle constructive algorithms	1900	x1379
1773J	Jumbled Trees constructive algorithms, math	2900	x98
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x453
1773H	Hot and Cold binary search, interactive	2600	x337
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x319
1773F	Football constructive algorithms	800	x3948
1773E	Easy Assembly greedy, sortings	1400	x4650
1773D	Dominoes combinatorics, flows, graph matchings, greedy	2600	x420
1773C	Cactus Meets Torus	3500	x28
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x729
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1479
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1269
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2231
1772E	Permutation Game games	1700	x6389
1772D	Absolute Sorting constructive algorithms, math	1400	x14927
1772C	Different Differences constructive algorithms, greedy, math	1000	x22690
1772B	Matrix Rotation brute force, implementation	800	x28183
1772A	A+B? implementation	800	x44021
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x965
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x662
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2598
1771C	Hossam and Trainees greedy, math, number theory	1600	x9008
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x12839
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x22044
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x97
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x150
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x615
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1296
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x3668