Problemset - Codeforces

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Pinely Round 4 (Div. 1 + Div. 2)
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Problems

#	Name
1453C	Triangles greedy, implementation	1700	x6009
1453B	Suffix Operations constructive algorithms, implementation	1400	x13269
1452D	Radio Towers combinatorics, dp, math	1600	x7890
1452B	Toy Blocks binary search, greedy, math, sortings	1400	x14596
1451D	Circle Game games, geometry, math	1700	x9429
1451C	String Equality dp, greedy, hashing, implementation, strings	1400	x15361
1450D	Rating Compression binary search, data structures, greedy, implementation, two pointers	1800	x5421
1446B	Catching Cheaters dp, strings	1800	x7737
1446A	Knapsack constructive algorithms, greedy, sortings	1300	x15290
1444B	Divide and Sum combinatorics, math, sortings	1900	x6207
1444A	Division brute force, math, number theory	1500	x12846
1443C	The Delivery Dilemma binary search, greedy, sortings	1400	x15111
1443B	Saving the City dp, greedy, math, sortings	1300	x15668
1442B	Identify the Operations combinatorics, data structures, dsu, greedy, implementation	1800	x4435
1442A	Extreme Subtraction constructive algorithms, dp, greedy	1800	x8743
1439A2	Binary Table (Hard Version) constructive algorithms, graphs, greedy, implementation	1900	x5069
1439A1	Binary Table (Easy Version) constructive algorithms, implementation	1500	x9302
1437D	Minimal Height Tree graphs, greedy, shortest paths, trees	1600	x12569
1437C	Chef Monocarp dp, flows, graph matchings, greedy, math, sortings	1800	x10328
1436D	Bandit in a City binary search, dfs and similar, graphs, greedy, trees	1900	x5983
1436C	Binary Search binary search, combinatorics	1500	x10723
1433E	Two Round Dances combinatorics, math	1300	x18283
1431D	Used Markers *special problem, greedy	1500	x451
1431C	Black Friday *special problem, implementation	1600	x701
1431B	Polycarp and the Language of Gods *special problem, implementation, two pointers	1400	x1006
1430E	String Reversal data structures, greedy, strings	1900	x6381
1430D	String Deletion binary search, data structures, greedy, two pointers	1700	x8737
1428D	Bouncing Boomerangs constructive algorithms, greedy, implementation	1900	x4448
1427B	Chess Cheater greedy, implementation, sortings	1400	x10835
1426E	Rock, Paper, Scissors brute force, constructive algorithms, flows, greedy, math	1800	x7329
1426D	Non-zero Segments constructive algorithms, data structures, greedy, sortings	1500	x15770
1425H	Huge Boxes of Animal Toys constructive algorithms	1300	x4115
1425F	Flamingoes of Mystery interactive	1400	x5385
1425A	Arena of Greed games, greedy	1400	x6440
1424G	Years data structures, sortings	1300	x5733
1423K	Lonely Numbers binary search, math, number theory, two pointers	1600	x4773
1423B	Valuable Paper binary search, flows, graph matchings, graphs	1900	x1789
1422C	Bargain combinatorics, dp, math	1700	x8162
1422B	Nice Matrix greedy, implementation, math	1300	x14302
1421D	Hexagons brute force, constructive algorithms, greedy, implementation, math, shortest paths	1900	x4137
1421C	Palindromifier constructive algorithms, strings	1400	x12688
1420D	Rescue Nibel! combinatorics, data structures, sortings	1800	x7490
1420C1	Pokémon Army (easy version) constructive algorithms, dp, greedy	1300	x17340
1419D2	Sage's Birthday (hard version) binary search, brute force, constructive algorithms, greedy, sortings, two pointers	1500	x15144
1419C	Killjoy greedy, implementation, math	1500	x15197
1418C	Mortal Kombat Tower dp, graphs, greedy, shortest paths	1500	x19112
1418B	Negative Prefixes greedy, sortings	1300	x16524
1416A	k-Amazing Numbers binary search, data structures, implementation, two pointers	1500	x12190
1415C	Bouncing Ball brute force, dp, implementation	1400	x10798
1413D	Shurikens data structures, greedy, implementation	1700	x6452
1413C	Perform Easily binary search, brute force, dp, implementation, sortings, two pointers	1900	x5659
1411C	Peaceful Rooks dfs and similar, dsu, graphs	1700	x7920
1409E	Two Platforms binary search, dp, sortings, two pointers	1800	x7727
1409D	Decrease the Sum of Digits greedy, math	1500	x19103
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8769
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x9886
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x11792
1407B	Big Vova brute force, greedy, math, number theory	1300	x16880
1406C	Link Cut Centroids constructive algorithms, dfs and similar, graphs, trees	1700	x10077
1404B	Tree Tag dfs and similar, dp, games, trees	1900	x7295
1404A	Balanced Bitstring implementation, strings	1500	x15133
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1169
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x9026
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23878
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x10007
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x17039
1400B	RPG Protagonist brute force, greedy, math	1700	x11019
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x17961
1398D	Colored Rectangles dp, greedy, sortings	1800	x11204
1398C	Good Subarrays data structures, dp, math	1600	x25285
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14542
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11135
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15210
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13836
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6586
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10395
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16451
1392D	Omkar and Bed Wars dp, greedy	1700	x8631
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14783
1389C	Good String brute force, dp, greedy, two pointers	1500	x18682
1389B	Array Walk brute force, dp, greedy	1600	x16270
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9496
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18905
1384B1	Koa and the Beach (Easy Version) brute force, dp, greedy	1900	x3873
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4860
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10379
1381B	Unmerge dp	1800	x8674
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x12987
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x20131
1380C	Create The Teams brute force, dp, greedy, implementation, sortings	1400	x20409
1380B	Universal Solution greedy	1400	x14466
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12574
1379A	Acacius and String brute force, implementation, strings	1500	x11724
1375D	Replace by MEX brute force, constructive algorithms, sortings	1900	x9070
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x20905
1374E1	Reading Books (easy version) data structures, greedy, sortings	1600	x13877
1374D	Zero Remainder Array math, sortings, two pointers	1400	x23163
1373D	Maximum Sum on Even Positions divide and conquer, dp, greedy, implementation	1600	x15428
1373C	Pluses and Minuses math	1300	x18237
1372C	Omkar and Baseball constructive algorithms, math	1500	x17655