Problemset - Codeforces

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Codeforces Round (Div. 3)
4 days
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Problems

#	Name
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x36228
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x531
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x781
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1614
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8275
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x15957
1789A	Serval and Mocha's Array brute force, math, number theory	800	x17728
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x809
1788E	Sum Over Zero data structures, dfs and similar, dp	2200	x2538
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3794
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16771
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19586
1788A	One and Two brute force, implementation, math	800	x28658
1787I	Treasure Hunt data structures, divide and conquer, two pointers	3400	x149
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x203
1787G	Colorful Tree Again brute force, data structures, trees	3000	x409
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x641
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2250
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation	1900	x3327
1787C	Remove the Bracket dp, greedy, math	1600	x6866
1787B	Number Factorization greedy, math, number theory	1100	x12958
1787A	Exponential Equation constructive algorithms, math	800	x18919
1786B	Cake Assembly Line brute force, sortings	1300	x8768
1786A2	Alternating Deck (hard version) implementation	800	x11294
1786A1	Non-alternating Deck (easy version) implementation	800	x13685
1784F	Minimums or Medians	3400	x173
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x311
1784D	Wooden Spoon combinatorics, dp	2400	x971
1784C	Monsters (hard version) data structures, greedy	2200	x1555
1784B	Letter Exchange constructive algorithms	1900	x3261
1784A	Monsters (easy version) brute force, greedy	1000	x14740
1783G	Weighed Tree Radius data structures, divide and conquer, implementation, trees	2800	x423
1783F	Double Sort II dfs and similar, flows, graph matchings, graphs	2500	x987
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2055
1783D	Different Arrays brute force, dp, implementation	2000	x4280
1783C	Yet Another Tournament binary search, greedy, sortings	1700	x9032
1783B	Matrix of Differences constructive algorithms, math	1100	x17476
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x28432
1781H2	Window Signals (hard version)	3500	x88
1781H1	Window Signals (easy version)	3200	x115
1781G	Diverse Coloring constructive algorithms, trees	3200	x219
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x752
1781E	Rectangle Shrinking binary search, brute force, data structures, greedy, implementation, two pointers	2300	x1282
1781D	Many Perfect Squares brute force, math, number theory	1800	x5363
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7288
1781B	Going to the Cinema brute force, greedy, sortings	1000	x13364
1781A	Parallel Projection geometry, math	800	x14960
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x680
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1412
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1340
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4766
1780B	GCD Partition brute force, greedy, math, number theory	1100	x17209
1780A	Hayato and School constructive algorithms, greedy	800	x21262
1779H	Olympic Team Building brute force, meet-in-the-middle	3500	x136
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x309
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1231
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1711
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7655
1779C	Least Prefix Sum data structures, greedy	1600	x12078
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23217
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22986
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x613
1778E	The Tree Has Fallen! bitmasks, dfs and similar, math, trees	2500	x844
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2611
1778C	Flexible String bitmasks, brute force, strings	1600	x7898
1778B	The Forbidden Permutation greedy, math	1300	x13060
1778A	Flip Flop Sum greedy, implementation	800	x23926
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees	2400	x847
1777E	Edge Reverse binary search, dfs and similar, graphs, trees	2200	x1743
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3342
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x8168
1777B	Emordnilap combinatorics, greedy, math	900	x17146
1777A	Everybody Likes Good Arrays! greedy, math	800	x22747
1776N	Count Permutations math	3500	x78
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x362
1776L	Controllers binary search, math	1500	x5529
1776K	Uniform Chemistry dp, math	3200	x65
1776J	Italian Data Centers graphs, shortest paths	2500	x617
1776I	Spinach Pizza games, geometry, greedy, interactive	2500	x646
1776H	Beppa and SwerChat two pointers	1300	x6167
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1977
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3319
1776E	Crossing the Railways data structures, dp	3500	x63
1776D	Teamwork constructive algorithms, greedy, math	2800	x349
1776C	Library game games, greedy, interactive, sortings	2500	x767
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1277
1776A	Walking Boy greedy	800	x6838
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x753
1775E	The Human Equation greedy, implementation	2100	x3092
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x5980
1775C	Interesting Sequence bitmasks, math	1600	x10006
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x13156
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x18450
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x19437
1774H	Maximum Permutation constructive algorithms	3500	x131
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x426
1774F2	Magician and Pigs (Hard Version) binary search, brute force, data structures, implementation	2700	x653
1774F1	Magician and Pigs (Easy Version) brute force, data structures, implementation	2400	x1033
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3397
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7622