Problemset - Codeforces

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Codeforces Round 986 (Div. 2)
07:59:08
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constructive algorithms

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Problems

#	Name
1553E	Permutation Shift brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math	2100	x3357
1552E	Colors and Intervals constructive algorithms, data structures, greedy, sortings	2300	x1899
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x7068
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5942
1551D2	Domino (hard version) constructive algorithms, implementation, math	2100	x2778
1551D1	Domino (easy version) constructive algorithms, math	1700	x7132
1551B2	Wonderful Coloring - 2 binary search, constructive algorithms, data structures, greedy	1400	x15586
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1854
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16791
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x498
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x637
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x414
1543D2	RPD and Rap Sheet (Hard Version) brute force, constructive algorithms, interactive, math	2200	x2024
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7632
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x23318
1541A	Pretty Permutations constructive algorithms, greedy, implementation	800	x29474
1540A	Great Graphs constructive algorithms, graphs, greedy, shortest paths, sortings	1400	x13988
1539E	Game with Cards binary search, constructive algorithms, data structures, dp, greedy, implementation	2500	x956
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13695
1537F	Figure Fixing constructive algorithms, dfs and similar, dsu, graphs, greedy, math	2200	x2489
1537C	Challenging Cliffs constructive algorithms, greedy, implementation, math	1200	x27826
1537B	Bad Boy constructive algorithms, greedy, math	900	x30349
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x962
1536B	Prinzessin der Verurteilung brute force, constructive algorithms, strings	1200	x18975
1536A	Omkar and Bad Story brute force, constructive algorithms	800	x20220
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x151
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x6078
1533I	Excursions *special problem, constructive algorithms, dfs and similar, flows, graph matchings, graphs		x52
1533G	Biome Map *special problem, constructive algorithms, dfs and similar, graphs		x90
1531C	Симметричный амфитеатр *special problem, constructive algorithms, dp		x650
1530G	What a Reversal constructive algorithms	3300	x144
1530E	Minimax constructive algorithms, greedy, strings	2100	x2983
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x9262
1530B	Putting Plates constructive algorithms, implementation	800	x15804
1529A	Eshag Loves Big Arrays constructive algorithms, greedy, math	800	x29821
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms, graphs, shortest paths	2500	x1438
1527B2	Palindrome Game (hard version) constructive algorithms, games	1900	x7962
1527B1	Palindrome Game (easy version) constructive algorithms, games	1200	x26389
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x291
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x1059
1526D	Kill Anton brute force, constructive algorithms, data structures, math, strings	2200	x2483
1526A	Mean Inequality constructive algorithms, sortings	800	x24228
1525B	Permutation Sort constructive algorithms, greedy	900	x24956
1523B	Lord of the Values constructive algorithms	1100	x12118
1521E	Nastia and a Beautiful Matrix binary search, constructive algorithms, dp, greedy	2700	x681
1521D	Nastia Plays with a Tree constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2500	x1971
1521C	Nastia and a Hidden Permutation constructive algorithms, interactive	2000	x4380
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x21455
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x37480
1520F2	Guess the K-th Zero (Hard version) binary search, constructive algorithms, data structures, interactive	2200	x3036
1520C	Not Adjacent Matrix constructive algorithms	1000	x31929
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x824
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x497
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13399
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x13276
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x12011
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1822
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x17234
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x20253
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1287
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1521
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5471
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14894
1513A	Array and Peaks constructive algorithms, implementation	800	x19433
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x22687
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x20304
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11560
1511B	GCD Length constructive algorithms, math, number theory	1100	x22997
1510J	Japanese Game constructive algorithms, math	2700	x529
1509A	Average Height constructive algorithms	800	x26059
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x346
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x575
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x4020
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x6256
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x3297
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x13161
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x22122
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x18759
1504A	Déjà Vu constructive algorithms, strings	800	x21771
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x184
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x1126
1503B	3-Coloring constructive algorithms, games, interactive	1700	x7081
1503A	Balance the Bits constructive algorithms, greedy	1600	x13480
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x817
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21288
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x17431
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x26015
1497B	M-arrays constructive algorithms, greedy, math	1200	x20175
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x21018
1495F	Squares constructive algorithms, data structures, dp, graphs, trees	3300	x341
1495C	Garden of the Sun constructive algorithms, graphs	2300	x2641
1494F	Delete The Edges brute force, constructive algorithms, dfs and similar, graphs, implementation	2900	x377
1494E	A-Z Graph constructive algorithms, data structures, graphs, hashing	2400	x1780
1494D	Dogeforces constructive algorithms, data structures, dfs and similar, divide and conquer, dsu, greedy, sortings, trees	2300	x2589
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x946
1493C	K-beautiful Strings binary search, brute force, constructive algorithms, greedy, strings	2000	x4633
1493A	Anti-knapsack constructive algorithms, greedy	800	x19331
1492E	Almost Fault-Tolerant Database brute force, constructive algorithms, dfs and similar, greedy, implementation	2500	x1192
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x6118
1491G	Switch and Flip constructive algorithms, graphs, math	2800	x831