Problemset - Codeforces

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Codeforces Round 987 (Div. 2)
03:34:53
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Problems

#	Name
1573B	Swaps greedy, math, sortings	1400	x14642
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x9118
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x340
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x334
1571C	Rhyme *special problem, implementation	1800	x380
1571B	Epic Novel *special problem, math	1300	x721
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4401
1569C	Jury Meeting combinatorics, math	1500	x12096
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12233
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7885
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6366
1562C	Rings constructive algorithms, math	1500	x13367
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5640
1561C	Deep Down Below binary search, greedy, sortings	1300	x14937
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x6178
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x8096
1560D	Make a Power of Two greedy, math, strings	1300	x18273
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13960
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4822
1558A	Charmed by the Game brute force, math	1300	x11123
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8654
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x7050
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5820
1556B	Take Your Places! implementation	1300	x12736
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x12510
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x21929
1555B	Two Tables brute force	1300	x16147
1554D	Diane constructive algorithms, greedy, strings	1800	x9539
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8964
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12859
1553D	Backspace dp, greedy, strings, two pointers	1500	x13828
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x14223
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x7075
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5943
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x15533
1551D1	Domino (easy version) constructive algorithms, math	1700	x7133
1551C	Interesting Story greedy, sortings, strings	1500	x13386
1551B2	Wonderful Coloring - 2 binary search, constructive algorithms, data structures, greedy	1400	x15591
1550C	Manhattan Subarrays brute force, geometry, greedy, implementation	1700	x10237
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9976
1548A	Web of Lies brute force, graphs, greedy	1400	x16524
1547F	Array Stabilization (GCD version) binary search, brute force, data structures, divide and conquer, number theory, two pointers	1900	x5908
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x14572
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16803
1545B	AquaMoon and Chess combinatorics, math	1900	x6000
1545A	AquaMoon and Strange Sort sortings	1500	x13983
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7637
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5316
1542C	Strange Function math, number theory	1600	x14337
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x23334
1540A	Great Graphs constructive algorithms, graphs, greedy, shortest paths, sortings	1400	x14007
1539D	PriceFixed binary search, greedy, implementation, sortings, two pointers	1600	x11715
1538F	Interesting Function binary search, dp, math, number theory	1500	x19428
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13707
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x28890
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x13102
1537D	Deleting Divisors games, math, number theory	1700	x12489
1536C	Diluc and Kaeya data structures, dp, hashing, number theory	1500	x14272
1535D	Playoff Tournament data structures, dfs and similar, dp, implementation, trees	1800	x7792
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16585
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x6083
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12877
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x9280
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8752
1528A	Parsa's Humongous Tree dfs and similar, divide and conquer, dp, greedy, trees	1600	x14962
1527C	Sequence Pair Weight hashing, implementation, math	1600	x13641
1527B2	Palindrome Game (hard version) constructive algorithms, games	1900	x7974
1526C2	Potions (Hard Version) data structures, greedy	1600	x23077
1526C1	Potions (Easy Version) brute force, data structures, dp, greedy	1500	x22803
1526B	I Hate 1111 dp, math, number theory	1400	x30997
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9859
1523C	Compression and Expansion brute force, data structures, greedy, implementation, trees	1600	x8804
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x21468
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x11892
1520E	Arranging The Sheep greedy, math	1400	x21716
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x15396
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x17110
1517D	Explorer Space dp, graphs, shortest paths	1800	x7771
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13408
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x12020
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x19655
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11445
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x17250
1514C	Product 1 Modulo N greedy, number theory	1600	x15341
1513C	Add One dp, matrices	1600	x14154
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14923
1512G	Short Task brute force, dp, math, number theory	1700	x8304
1512F	Education brute force, dp, greedy, implementation	1900	x6276
1512E	Permutation by Sum brute force, greedy, math	1600	x10558
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11574
1509C	The Sports Festival dp, greedy	1800	x12728
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x4023
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x6265
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x13169
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x22155
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1807
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x800
1505C	Fibonacci Words *special problem, implementation	1400	x6459
1505B	DMCA *special problem, implementation, number theory	1600	x6191
1503B	3-Coloring constructive algorithms, games, interactive	1700	x7084