Problemset - Codeforces

Problems

#	Name
1442B	Identify the Operations combinatorics, data structures, dsu, greedy, implementation	1800	x4511
1442A	Extreme Subtraction constructive algorithms, dp, greedy	1800	x8925
1439A2	Binary Table (Hard Version) constructive algorithms, graphs, greedy, implementation	1900	x5141
1439A1	Binary Table (Easy Version) constructive algorithms, implementation	1500	x9416
1437D	Minimal Height Tree graphs, greedy, shortest paths, trees	1600	x12906
1437C	Chef Monocarp dp, flows, graph matchings, greedy, math, sortings	1800	x10602
1436D	Bandit in a City binary search, dfs and similar, graphs, greedy, trees	1900	x6101
1436C	Binary Search binary search, combinatorics	1500	x10898
1433E	Two Round Dances combinatorics, math	1300	x18601
1431D	Used Markers *special problem, greedy	1500	x457
1431C	Black Friday *special problem, implementation	1600	x707
1431B	Polycarp and the Language of Gods *special problem, implementation, two pointers	1400	x1014
1430E	String Reversal data structures, greedy, strings	1900	x6564
1430D	String Deletion binary search, data structures, greedy, two pointers	1700	x8841
1428D	Bouncing Boomerangs constructive algorithms, greedy, implementation	1900	x4517
1427B	Chess Cheater greedy, implementation, sortings	1400	x10962
1426E	Rock, Paper, Scissors brute force, constructive algorithms, flows, greedy, math	1800	x7481
1426D	Non-zero Segments constructive algorithms, data structures, greedy, sortings	1500	x16109
1425H	Huge Boxes of Animal Toys constructive algorithms	1300	x4195
1425F	Flamingoes of Mystery interactive	1400	x5835
1425A	Arena of Greed games, greedy	1400	x6619
1424G	Years data structures, sortings	1300	x5941
1423K	Lonely Numbers binary search, math, number theory, two pointers	1600	x4901
1423B	Valuable Paper binary search, flows, graph matchings, graphs	1900	x1821
1422C	Bargain combinatorics, dp, math	1700	x8286
1422B	Nice Matrix greedy, implementation, math	1300	x14449
1421D	Hexagons brute force, constructive algorithms, greedy, implementation, math, shortest paths	1900	x4186
1421C	Palindromifier constructive algorithms, strings	1400	x12866
1420D	Rescue Nibel! combinatorics, data structures, sortings	1800	x7650
1420C1	Pokémon Army (easy version) constructive algorithms, dp, greedy	1300	x17703
1419D2	Sage's Birthday (hard version) binary search, brute force, constructive algorithms, greedy, sortings, two pointers	1500	x15727
1419C	Killjoy greedy, implementation, math	1500	x15478
1418C	Mortal Kombat Tower dp, graphs, greedy, shortest paths	1500	x20401
1418B	Negative Prefixes greedy, sortings	1300	x16715
1416A	k-Amazing Numbers binary search, data structures, implementation, two pointers	1500	x12702
1415C	Bouncing Ball brute force, dp, implementation	1400	x10987
1413D	Shurikens data structures, greedy, implementation	1700	x6528
1413C	Perform Easily binary search, brute force, dp, implementation, sortings, two pointers	1900	x5755
1411C	Peaceful Rooks dfs and similar, dsu, graphs	1700	x8037
1409E	Two Platforms binary search, dp, sortings, two pointers	1800	x7881
1409D	Decrease the Sum of Digits greedy, math	1500	x19558
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8889
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x10000
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x12169
1407B	Big Vova brute force, greedy, math, number theory	1300	x17087
1406C	Link Cut Centroids constructive algorithms, dfs and similar, graphs, trees	1700	x10381
1404B	Tree Tag dfs and similar, dp, games, trees	1900	x7479
1404A	Balanced Bitstring implementation, strings	1500	x15623
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1202
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x9384
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x24455
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x10387
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x17410
1400B	RPG Protagonist brute force, greedy, math	1700	x11241
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x18387
1398D	Colored Rectangles dp, greedy, sortings	1800	x11573
1398C	Good Subarrays data structures, dp, math	1600	x27027
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14774
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11490
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15547
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14203
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6806
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10658
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16769
1392D	Omkar and Bed Wars dp, greedy	1700	x8988
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x15082
1389C	Good String brute force, dp, greedy, two pointers	1500	x19127
1389B	Array Walk brute force, dp, greedy	1600	x16934
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9777
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x19447
1384B1	Koa and the Beach (Easy Version) brute force, dp, greedy	1900	x3926
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x5101
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10717
1381B	Unmerge dp	1800	x8972
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x13359
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x20602
1380C	Create The Teams brute force, dp, greedy, implementation, sortings	1400	x20870
1380B	Universal Solution greedy	1400	x14648
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12715
1379A	Acacius and String brute force, implementation, strings	1500	x11960
1375D	Replace by MEX brute force, constructive algorithms, sortings	1900	x9291
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x21314
1374E1	Reading Books (easy version) data structures, greedy, sortings	1600	x14086
1374D	Zero Remainder Array math, sortings, two pointers	1400	x24124
1373D	Maximum Sum on Even Positions divide and conquer, dp, greedy, implementation	1600	x15749
1373C	Pluses and Minuses math	1300	x18429
1372C	Omkar and Baseball constructive algorithms, math	1500	x17953
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x28420
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x5266
1371D	Grid-00100 constructive algorithms, greedy, implementation	1600	x13032
1371C	A Cookie for You greedy, implementation, math	1300	x20606
1370C	Number Game games, math, number theory	1400	x24770
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x8685
1369C	RationalLee greedy, math, sortings, two pointers	1400	x19681
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11955
1368C	Even Picture constructive algorithms	1500	x13490
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x19905
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5488
1367D	Task On The Board constructive algorithms, greedy, implementation, sortings	1800	x8375
1367C	Social Distance constructive algorithms, greedy, math	1300	x23597