Problemset - Codeforces

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Codeforces Round #849 (Div. 4)
19:58:34
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Problems

#	Name
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs		x182
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs		x299
1792E	Divisors and Table brute force, dfs and similar, dp, number theory		x689
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings		x3376
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers		x6961
1792B	Stand-up Comedian greedy, math		x11598
1792A	GamingForces greedy, sortings		x18591
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths		x526
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees		x1685
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms		x8057
1790D	Matryoshkas data structures, greedy, sortings		x10349
1790C	Premutation brute force, implementation, math		x15221
1790B	Taisia and Dice greedy, greedy, math		x19186
1790A	Polycarp and the Day of Pi implementation, math, strings		x24366
1787I	Treasure Hunt data structures, divide and conquer, two pointers		x43
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry		x85
1787G	Colorful Tree Again brute force, data structures, trees		x185
1787F	Inverse Transformation constructive algorithms, implementation, math		x423
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math		x1308
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation		x2119
1787C	Remove the Bracket dp, greedy, math		x4019
1787B	Number Factorization greedy, math, number theory		x9332
1787A	Exponential Equation constructive algorithms, math		x14093
1783G	Weighed Tree Radius data structures, divide and conquer, implementation, trees	2800	x258
1783F	Double Sort II dfs and similar, flows, graph matchings, graphs	2500	x563
1783E	Game of the Year brute force, data structures, math, number theory	2300	x1455
1783D	Different Arrays brute force, dp, implementation	2000	x2902
1783C	Yet Another Tournament binary search, greedy, sortings	1700	x6485
1783B	Matrix of Differences constructive algorithms, math	1100	x13867
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x21262
1781H2	Window Signals (hard version)	3500	x42
1781H1	Window Signals (easy version)	3200	x65
1781G	Diverse Coloring constructive algorithms, trees	3200	x106
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x483
1781E	Rectangle Shrinking binary search, brute force, data structures, greedy, implementation, two pointers	2300	x1067
1781D	Many Perfect Squares brute force, math, number theory	1800	x3658
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x4883
1781B	Going to the Cinema brute force, greedy, sortings	1000	x10488
1781A	Parallel Projection geometry, math	800	x12840
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures		x330
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings		x769
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory		x786
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive		x3001
1780B	GCD Partition brute force, greedy, math, number theory		x11792
1780A	Hayato and School constructive algorithms, greedy		x17087
1779H	Olympic Team Building brute force, meet-in-the-middle	3500	x91
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x203
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x939
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1334
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x5437
1779C	Least Prefix Sum data structures, greedy	1600	x8811
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x18470
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x20343
1778F	Maximizing Root dfs and similar, dp, graphs, math, trees		x198
1778E	The Tree Has Fallen! binary search, bitmasks, dfs and similar, math, trees		x341
1778D	Flexible String Revisit combinatorics, dp, math, probabilities		x1214
1778C	Flexible String bitmasks, brute force, strings		x4196
1778B	The Forbidden Permutation greedy, math		x8199
1778A	Flip Flop Sum greedy, implementation		x16969
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees		x456
1777E	Edge Reverse binary search, dfs and similar, graphs, trees		x958
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees		x1937
1777C	Quiz Master binary search, math, number theory, sortings, two pointers		x4832
1777B	Emordnilap combinatorics, greedy, math		x12750
1777A	Everybody Likes Good Arrays! greedy, math		x16078
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x530
1775E	The Human Equation greedy, implementation	2100	x2166
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x3630
1775C	Interesting Sequence bitmasks, math	1600	x6635
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x8994
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x14379
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x15769
1774H	Maximum Permutation constructive algorithms	3500	x95
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x173
1774F2	Magician and Pigs (Hard Version) binary search, brute force, data structures, implementation	2700	x442
1774F1	Magician and Pigs (Easy Version) brute force, data structures, implementation	2400	x808
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x2444
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x5413
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x8910
1774B	Coloring constructive algorithms, greedy, math	1500	x8260
1774A	Add Plus Minus Sign constructive algorithms, math	800	x19181
1773L	Lisa's Sequences dp	3500	x4
1773K	King's Puzzle constructive algorithms	1900	x969
1773J	Jumbled Trees constructive algorithms, math	2900	x57
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x316
1773H	Hot and Cold binary search, interactive	2600	x214
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x182
1773F	Football constructive algorithms	800	x2830
1773E	Easy Assembly greedy, sortings	1400	x2528
1773D	Dominoes combinatorics, flows, graph matchings, greedy	2600	x250
1773C	Cactus Meets Torus	3500	x19
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x505
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x965
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x889
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x1447
1772E	Permutation Game games	1700	x4379
1772D	Absolute Sorting constructive algorithms, math	1400	x9239
1772C	Different Differences constructive algorithms, greedy, math	1000	x16997
1772B	Matrix Rotation brute force, implementation	800	x22112
1772A	A+B? implementation	800	x27967

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