Problemset - Codeforces

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Problems

#	Name
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x337
1571C	Rhyme *special problem, implementation	1800	x382
1569C	Jury Meeting combinatorics, math	1500	x12194
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12291
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7938
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6398
1562C	Rings constructive algorithms, math	1500	x13438
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5678
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x8160
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x14102
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8697
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x7131
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5839
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x12675
1554D	Diane constructive algorithms, greedy, strings	1800	x9621
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x9020
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12936
1553D	Backspace dp, greedy, strings, two pointers	1500	x13909
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x7133
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5964
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x15624
1551D1	Domino (easy version) constructive algorithms, math	1700	x7169
1551C	Interesting Story greedy, sortings, strings	1500	x13468
1551B2	Wonderful Coloring - 2 binary search, constructive algorithms, data structures, greedy	1400	x15663
1550C	Manhattan Subarrays brute force, geometry, greedy, implementation	1700	x10279
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x10117
1548A	Web of Lies brute force, graphs, greedy	1400	x16622
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x14679
1545A	AquaMoon and Strange Sort sortings	1500	x14061
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7669
1542C	Strange Function math, number theory	1600	x14483
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x23604
1540A	Great Graphs constructive algorithms, graphs, greedy, shortest paths, sortings	1400	x14065
1539D	PriceFixed binary search, greedy, implementation, sortings, two pointers	1600	x11808
1538F	Interesting Function binary search, dp, math, number theory	1500	x19646
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13835
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x13307
1537D	Deleting Divisors games, math, number theory	1700	x12592
1536C	Diluc and Kaeya data structures, dp, hashing, number theory	1500	x14437
1535D	Playoff Tournament data structures, dfs and similar, dp, implementation, trees	1800	x7855
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16708
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x6153
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x9341
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8802
1528A	Parsa's Humongous Tree dfs and similar, divide and conquer, dp, greedy, trees	1600	x15194
1527C	Sequence Pair Weight hashing, implementation, math	1600	x13768
1526C2	Potions (Hard Version) data structures, greedy	1600	x23464
1526C1	Potions (Easy Version) brute force, data structures, dp, greedy	1500	x23269
1526B	I Hate 1111 dp, math, number theory	1400	x31429
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9925
1523C	Compression and Expansion brute force, data structures, greedy, implementation, trees	1600	x8865
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x12208
1520E	Arranging The Sheep greedy, math	1400	x22055
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x15521
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x17347
1517D	Explorer Space dp, graphs, shortest paths	1800	x7902
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13469
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x12109
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x19940
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11517
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x17360
1514C	Product 1 Modulo N greedy, number theory	1600	x15522
1513C	Add One dp, matrices	1600	x14452
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x15169
1512G	Short Task brute force, dp, math, number theory	1700	x8363
1512E	Permutation by Sum brute force, greedy, math	1600	x10624
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11652
1509C	The Sports Festival dp, greedy	1800	x12892
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x4061
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x13248
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x22364
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1812
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x806
1505C	Fibonacci Words *special problem, implementation	1400	x6489
1505B	DMCA *special problem, implementation, number theory	1600	x6219
1503B	3-Coloring constructive algorithms, games, interactive	1700	x7110
1503A	Balance the Bits constructive algorithms, greedy	1600	x13601
1500A	Going Home brute force, hashing, implementation, math	1800	x8959
1499C	Minimum Grid Path brute force, data structures, greedy, math	1500	x12766
1498C	Planar Reflections brute force, data structures, dp	1600	x9911
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x8449
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x17612
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x14516
1492C	Maximum width binary search, data structures, dp, greedy, two pointers	1500	x16318
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x7277
1491C	Pekora and Trampoline brute force, data structures, dp, greedy, implementation	1700	x8021
1490F	Equalize the Array binary search, data structures, greedy, math, sortings	1500	x16457
1490E	Accidental Victory binary search, data structures, greedy	1400	x19451
1488B	RBS Deletion *special problem, greedy	1800	x571
1487D	Pythagorean Triples binary search, brute force, math, number theory	1500	x18465
1487C	Minimum Ties brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math	1500	x14342
1486C1	Guessing the Greatest (easy version) binary search, interactive	1600	x12598
1486B	Eastern Exhibition binary search, geometry, shortest paths, sortings	1500	x16366
1485C	Floor and Mod binary search, brute force, math, number theory	1700	x10110
1482C	Basic Diplomacy brute force, constructive algorithms, greedy, implementation	1600	x9471
1482B	Restore Modulo implementation, math	1500	x9257
1481C	Fence Painting brute force, constructive algorithms, greedy	1600	x11763
1479A	Searching Local Minimum binary search, interactive, ternary search	1700	x11953
1478C	Nezzar and Symmetric Array implementation, math, sortings	1700	x9910
1477A	Nezzar and Board constructive algorithms, math, number theory	1800	x6036