Problemset - Codeforces

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Codeforces Round (Div. 3)
7 days

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Problems

#	Name
1498E	Two Houses brute force, graphs, greedy, interactive, sortings	2200	x1848
1498D	Bananas in a Microwave dfs and similar, dp, graphs, implementation	2200	x2253
1488E	Palindromic Doubles *special problem, data structures, dp	2200	x210
1486E	Paired Payment binary search, brute force, constructive algorithms, dp, flows, graphs, shortest paths	2200	x2817
1485D	Multiples and Power Differences constructive algorithms, graphs, math, number theory	2200	x4964
1477C	Nezzar and Nice Beatmap constructive algorithms, geometry, greedy, math, sortings	2200	x2220
1474D	Cleaning data structures, dp, greedy, math	2200	x3889
1470D	Strange Housing constructive algorithms, dfs and similar, graph matchings, graphs, greedy	2200	x3610
1468H	K and Medians constructive algorithms, greedy, math	2200	x1713
1468A	LaIS data structures, dp, greedy	2200	x1583
1467D	Sum of Paths combinatorics, dp, math	2200	x3556
1461E	Water Level brute force, graphs, greedy, implementation, math	2200	x2066
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4088
1437E	Make It Increasing binary search, constructive algorithms, data structures, dp, implementation	2200	x3347
1428E	Carrots for Rabbits binary search, data structures, greedy, math, sortings	2200	x3540
1425E	Excitation of Atoms greedy, implementation	2200	x910
1424M	Ancient Language graphs, sortings	2200	x522
1415E	New Game Plus! constructive algorithms, greedy, math	2200	x2602
1407D	Discrete Centrifugal Jumps data structures, dp, graphs	2200	x4650
1406D	Three Sequences constructive algorithms, data structures, greedy, math	2200	x3398
1400E	Clear the Multiset data structures, divide and conquer, dp, greedy	2200	x5050
1399E2	Weights Division (hard version) binary search, dfs and similar, greedy, sortings, trees, two pointers	2200	x2228
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2183
1389E	Calendar Ambiguity math, number theory	2200	x3125
1384B2	Koa and the Beach (Hard Version) constructive algorithms, dp, greedy, implementation	2200	x2473
1373E	Sum of Digits brute force, constructive algorithms, dp, greedy	2200	x2707
1353F	Decreasing Heights brute force, dp	2200	x3111
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x3018
1336C	Kaavi and Magic Spell dp, strings	2200	x3392
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x2010
1334E	Divisor Paths combinatorics, graphs, greedy, math, number theory	2200	x2649
1333F	Kate and imperfection greedy, implementation, math, number theory, sortings, two pointers	2200	x3991
1328F	Make k Equal greedy	2200	x3026
1327D	Infinite Path brute force, dfs and similar, graphs, math, number theory	2200	x3086
1311E	Construct the Binary Tree brute force, constructive algorithms, trees	2200	x2285
1305E	Kuroni and the Score Distribution constructive algorithms, greedy, implementation, math	2200	x3016
1303E	Erase Subsequences dp, strings	2200	x2720
1295E	Permutation Separation data structures, divide and conquer	2200	x2485
1283F	DIY Garland constructive algorithms, greedy, trees	2200	x1801
1278E	Tests for problem D constructive algorithms, dfs and similar, divide and conquer, trees	2200	x1892
1272F	Two Bracket Sequences dp, strings, two pointers	2200	x1904
1253E	Antenna Coverage data structures, dp, greedy, sortings	2200	x2770
1252E	Songwriter greedy, two pointers	2200	x1216
1249F	Maximum Weight Subset dp, trees	2200	x2254
1238F	The Maximum Subtree dfs and similar, dp, graphs, trees	2200	x1831
1238E	Keyboard Purchase bitmasks, dp	2200	x2868
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2396
1231E	Middle-Out constructive algorithms, greedy, strings	2200	x821
1227F1	Wrong Answer on test 233 (Easy Version) dp	2200	x1771
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1446
1225E	Rock Is Push binary search, dp	2200	x1803
1220E	Tourism dfs and similar, dp, dsu, graphs, greedy, trees	2200	x2692
1216E2	Numerical Sequence (hard version) binary search, math	2200	x1435
1215E	Marbles bitmasks, dp	2200	x2928
1208E	Let Them Slide data structures, implementation	2200	x1966
1196F	K-th Path brute force, constructive algorithms, shortest paths, sortings	2200	x2470
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1898
1184C2	Heidi and the Turing Test (Medium) data structures	2200	x603
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2200	x569
1181D	Irrigation binary search, data structures, implementation, sortings, trees, two pointers	2200	x2094
1179C	Serge and Dining Room binary search, data structures, graph matchings, greedy, implementation, math, trees	2200	x1973
1178F1	Short Colorful Strip combinatorics, dfs and similar, dp	2200	x2067
1175E	Minimal Segment Cover data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees	2200	x3266
1168C	And Reachability bitmasks, dp	2200	x2349
1166D	Cute Sequences binary search, brute force, greedy, math	2200	x2139
1158B	The minimal unique substring constructive algorithms, math, strings	2200	x2205
1157G	Inverse of Rows and Columns brute force, constructive algorithms	2200	x892
1156E	Special Segments of Permutation data structures, divide and conquer, dsu, two pointers	2200	x2811
1156D	0-1-Tree dfs and similar, divide and conquer, dp, dsu, trees	2200	x3734
1155E	Guess the Root brute force, interactive, math	2200	x1397
1154G	Minimum Possible LCM brute force, greedy, math, number theory	2200	x2651
1153E	Serval and Snake binary search, brute force, interactive	2200	x1455
1149B	Three Religions dp, implementation, strings	2200	x1876
1140E	Palindrome-less Arrays combinatorics, divide and conquer, dp	2200	x1899
1136E	Nastya Hasn't Written a Legend binary search, data structures	2200	x1046
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1459
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2200	x2789
1110E	Magic Stones constructive algorithms, math, sortings	2200	x3823
1110D	Jongmah dp	2200	x3284
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1600
1100E	Andrew and Taxi binary search, dfs and similar, graphs	2200	x2305
1097D	Makoto and a Blackboard dp, math, number theory, probabilities	2200	x2592
1092D2	Great Vova Wall (Version 2) data structures, implementation	2200	x2874
1092D1	Great Vova Wall (Version 1) greedy, implementation, math	2200	x4515
1089A	Alice the Fan dp	2200	x1113
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2269
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1275
1059D	Nature Reserve binary search, geometry, ternary search	2200	x2545
1045G	AI robots data structures	2200	x1552
1045D	Interstellar battle math, probabilities, trees	2200	x641
1039C	Network Safety dfs and similar, dsu, graphs, math, sortings	2200	x1314
1037E	Trips graphs	2200	x2716
1034B	Little C Loves 3 II brute force, constructive algorithms, flows, graph matchings	2200	x2086
1003F	Abbreviation dp, hashing, strings	2200	x1166
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x2019
980E	The Number Games data structures, greedy, trees	2200	x1881
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1710
965E	Short Code data structures, dp, greedy, strings, trees	2200	x1339
962E	Byteland, Berland and Disputed Cities constructive algorithms, greedy	2200	x1047
958E2	Guard Duty (medium) binary search, dp, greedy, sortings	2200	x909