Problemset - Codeforces

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Codeforces Round (Div. 1 + Div. 2)
13 days

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Problems

#	Name
1615G	Maximum Adjacent Pairs constructive algorithms, graph matchings	3300	x178
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x1208
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1777
1615D	X(or)-mas Tree bitmasks, dfs and similar, dsu, graphs, trees	2200	x2214
1615C	Menorah brute force, graphs, greedy, math	1600	x9314
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x18263
1615A	Closing The Gap greedy, math	800	x21741
1614E	Divan and a Cottage binary search, data structures	2600	x1003
1614D2	Divan and Kostomuksha (hard version) dp, number theory	2300	x2827
1614D1	Divan and Kostomuksha (easy version) dp, number theory	2100	x4609
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x11518
1614B	Divan and a New Project constructive algorithms, sortings	1000	x32013
1614A	Divan and a Store brute force, constructive algorithms, greedy	800	x24787
1613F	Tree Coloring combinatorics, divide and conquer, fft	2600	x925
1613E	Crazy Robot dfs and similar, graphs	2000	x6069
1613D	MEX Sequences dp, math	1900	x5430
1613C	Poisoned Dagger binary search	1200	x31580
1613B	Absent Remainder greedy, implementation, sortings	1000	x23615
1613A	Long Comparison implementation, math	900	x26964
1612G	Max Sum Array combinatorics, constructive algorithms, greedy, sortings	2500	x1058
1612F	Armor and Weapons brute force, dp, greedy, shortest paths	2800	x761
1612E	Messages brute force, dp, greedy, probabilities, sortings	2000	x2947
1612D	X-Magic Pair math, number theory	1600	x10461
1612C	Chat Ban binary search, math	1300	x28330
1612B	Special Permutation constructive algorithms, greedy	900	x18650
1612A	Distance brute force, constructive algorithms	800	x18350
1611G	Robot and Candies data structures, graph matchings, greedy	2500	x798
1611F	ATM and Students binary search, data structures, two pointers	1800	x7680
1611E2	Escape The Maze (hard version) dfs and similar, dp, greedy, shortest paths, trees	1900	x4463
1611E1	Escape The Maze (easy version) dfs and similar, greedy, shortest paths, trees, two pointers	1700	x8606
1611D	Weights Assignment For Tree Edges constructive algorithms, trees	1500	x11819
1611C	Polycarp Recovers the Permutation constructive algorithms	1000	x19575
1611B	Team Composition: Programmers and Mathematicians binary search, constructive algorithms, math	800	x32401
1611A	Make Even constructive algorithms, math	800	x33760
1610I	Mashtali vs AtCoder games, trees	3100	x488
1610H	Squid Game data structures, dfs and similar, greedy, trees	3100	x789
1610G	AmShZ Wins a Bet data structures, greedy, hashing	3300	x673
1610F	Mashtali: a Space Oddysey constructive algorithms, dfs and similar, graphs	3000	x738
1610E	AmShZ and G.O.A.T. binary search, brute force, greedy, implementation, math	2300	x2156
1610D	Not Quite Lee combinatorics, dp, math, number theory	2000	x3154
1610C	Keshi Is Throwing a Party binary search, greedy	1600	x16799
1610B	Kalindrome Array greedy, two pointers	1100	x25766
1610A	Anti Light's Cell Guessing math	900	x17216
1609H	Pushing Robots	3500	x110
1609G	A Stroll Around the Matrix data structures, greedy, math	3000	x709
1609F	Interesting Sections data structures, divide and conquer, meet-in-the-middle, two pointers	2800	x1089
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x2562
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x8714
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x10598
1609B	William the Vigilant implementation, strings	1100	x12216
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x19218
1608G	Alphabetic Tree binary search, data structures, dfs and similar, hashing, string suffix structures, strings, trees	3500	x325
1608F	MEX counting combinatorics, dp, implementation	3200	x958
1608E	The Cells on the Paper binary search, implementation, sortings	2800	x532
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1643
1608C	Game Master data structures, dfs and similar, dp, graphs, greedy, two pointers	1700	x7475
1608B	Build the Permutation constructive algorithms, greedy	1200	x12645
1608A	Find Array constructive algorithms, math	800	x20459
1607H	Banquet Preparations 2 greedy, sortings, two pointers	2200	x1485
1607G	Banquet Preparations 1 greedy	2200	x1780
1607F	Robot on the Board 2 brute force, dfs and similar, graphs, implementation	2300	x2178
1607E	Robot on the Board 1 implementation	1600	x10123
1607D	Blue-Red Permutation greedy, math, sortings	1300	x18379
1607C	Minimum Extraction brute force, sortings	1000	x27335
1607B	Odd Grasshopper math	900	x43520
1607A	Linear Keyboard implementation, strings	800	x41393
1606F	Tree Queries brute force, dp, trees	2800	x826
1606E	Arena combinatorics, dp, math	2100	x4359
1606D	Red-Blue Matrix brute force, constructive algorithms, implementation, sortings	2400	x1643
1606C	Banknotes greedy, number theory	1400	x15391
1606B	Update Files greedy, implementation, math	1100	x19765
1606A	AB Balance strings	900	x41261
1605F	PalindORme combinatorics, dp	2900	x439
1605E	Array Equalizer binary search, greedy, implementation, math, number theory, sortings, two pointers	2400	x1225
1605D	Treelabeling bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees	2100	x3322
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x19228
1605B	Reverse Sort greedy, sortings	1000	x19522
1605A	A.M. Deviation math, number theory	800	x21774
1604B	XOR Specia-LIS-t	1100	x16415
1604A	Era greedy	800	x22800
1603F	October 18, 2017 combinatorics, dp, implementation, math	2700	x406
1603E	A Perfect Problem combinatorics, dp, math	3200	x696
1603D	Artistic Partition divide and conquer, dp, number theory	3000	x1001
1603C	Extreme Extension dp, greedy, math, number theory	2300	x2359
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x15311
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x18035
1602B	Divine Array constructive algorithms, implementation	1100	x14865
1602A	Two Subsequences implementation	800	x19952
1601F	Two Sorts binary search, dfs and similar, math, meet-in-the-middle	3400	x373
1601E	Phys Ed Online data structures, dp, greedy	2900	x656
1601D	Difficult Mountain data structures, dp, greedy, sortings	2700	x2112
1601C	Optimal Insertion data structures, divide and conquer, dp, greedy, sortings	2300	x2415
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x5607
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x22969
1600J	Robot Factory bitmasks, dfs and similar	1400	x4498
1600F	Party Organization brute force, math, probabilities	2300	x652
1600E	Array Game games, greedy, two pointers	1900	x2485
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x362
1599I	Desert data structures, graphs	2700	x151
1599H	Hidden Fortress interactive, math	2100	x1332

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