Problemset - Codeforces

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Educational Codeforces Round 81 (Rated for Div. 2)
42:32:52
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Problems

#	Name
1293A	ConneR and the A.R.C. Markland-N binary search, brute force, implementation	1100	x8230
1288D	Minimax Problem binary search, bitmasks, dp	2000	x2530
1288A	Deadline binary search, brute force, math, ternary search	1100	x9221
1285F	Classical? binary search, combinatorics, number theory	2800	x262
1284D	New Year and Conference binary search, data structures, hashing, sortings	2100	x1841
1284B	New Year and Ascent Sequence binary search, combinatorics, data structures, dp, implementation, sortings	1500	x6244
1279F	New Year and Handle Change binary search, dp	2800	x286
1279B	Verse For Santa binary search, brute force, implementation	1300	x6890
1268C	K Integers binary search, data structures	2300	x824
1271E	Common Number binary search, combinatorics, dp, math	2100	x1493
1275F	Шардирование постов *special problem, binary search, interactive		x90
1263C	Everyone is a Winner! binary search, math, meet-in-the-middle, number theory	1400	x6144
1260D	A Game with Traps binary search, dp, greedy, sortings	1900	x2064
1260B	Obtain Two Zeroes binary search, math	1200	x7216
1227E	Arson In Berland Forest binary search, graphs, shortest paths	2200	x848
1253F	Cheap Robot binary search, dsu, graphs, shortest paths, trees	2600	x542
1257D	Yet Another Monster Killing Problem binary search, data structures, dp, greedy, sortings, two pointers	1700	x4063
1250L	Divide The Students binary search, greedy, math	1700	x1874
1250J	The Parade binary search, greedy	1900	x1410
1250I	Show Must Go On binary search, brute force, greedy, shortest paths	3100	x88
1225E	Rock Is Push binary search, dp	2200	x1077
1251E2	Voting (Hard Version) binary search, data structures, greedy	2300	x1112
1251D	Salary Changing binary search, greedy, sortings	1800	x2946
1249C2	Good Numbers (hard version) binary search, greedy, math, meet-in-the-middle	1500	x5947
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2600	x363
1237D	Balanced Playlist binary search, data structures, implementation	1900	x2265
1237C2	Balanced Removals (Harder) binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings	1900	x2533
1244E	Minimizing Difference binary search, constructive algorithms, greedy, sortings, ternary search, two pointers	2000	x2576
1238D	AB-string binary search, combinatorics, dp, strings	1800	x3177
1223G	Wooden Raft binary search, math, number theory	3100	x109
1223C	Save the Nature binary search, greedy	1600	x4448
1216E2	Numerical Sequence (hard version) binary search, math	2300	x770
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x1936
1221F	Choose a Square binary search, data structures, sortings	2500	x499
1221C	Perfect Team binary search, math	1200	x8778
1220F	Gardener Alex binary search, data structures	2600	x352
1211H	Road Repair in Treeland *special problem, binary search, dp, trees	3000	x14
1211E	Double Permutation Inc. *special problem, binary search, greedy	2200	x103
1211D	Teams *special problem, binary search, greedy, math	2200	x126
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1600	x4348
1217A	Creating a Character binary search, math	1300	x8583
1208D	Restore Permutation binary search, data structures, greedy, implementation	1900	x2918
1208B	Uniqueness binary search, brute force, implementation, two pointers	1500	x5569
1203D2	Remove the Substring (hard version) binary search, greedy, implementation, two pointers	1800	x3738
1202F	You Are Given Some Letters... binary search, implementation, math	2800	x171
1201D	Treasure Hunting binary search, dp, greedy, implementation	2000	x1339
1201C	Maximum Median binary search, greedy, math, sortings	1400	x6645
1198B	Welfare State binary search, brute force, data structures, sortings	1600	x5372
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x845
1195B	Sport Mafia binary search, brute force, math	1100	x9514
1178H	Stock Exchange binary search, flows, graphs	3500	x32
1190E	Tokitsukaze and Explosion binary search, greedy	3100	x110
1184B1	The Doctor Meets Vader (Easy) binary search, sortings	1400	x2387
1187B	Letters Shop binary search, implementation, strings	1300	x7177
1183C	Computer Game binary search, math	1400	x7059
1179C	Serge and Dining Room binary search, data structures, graph matchings, greedy, implementation, math, trees	2400	x1021
1181D	Irrigation binary search, data structures, implementation, sortings, trees, two pointers	2100	x1144
1182F	Maximum Sine binary search, data structures, number theory	2900	x161
1175C	Electrification binary search, brute force, greedy	1600	x3954
1148B	Born This Way binary search, brute force, two pointers	1700	x4430
1177B	Digits Sequence (Hard Edition) binary search, divide and conquer, implementation	1800	x1139
1170F	Wheels *special problem, binary search, greedy		x79
1170E	Sliding Doors *special problem, binary search		x182
1168A	Increasing by Modulo binary search, greedy	1800	x3531
1166D	Cute Sequences binary search, brute force, greedy, math	2100	x1369
1166C	A Tale of Two Lands binary search, sortings, two pointers	1600	x5216
1167E	Range Deleting binary search, combinatorics, data structures, two pointers	2100	x1334
1165F1	Microtransactions (easy version) binary search, greedy	2400	x926
1165F2	Microtransactions (hard version) binary search, greedy, implementation	2400	x989
1158E	Strange device binary search, interactive, math, trees	3300	x43
1158A	The Party and Sweets binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers	1500	x3953
1156C	Match Points binary search, greedy, sortings, ternary search, two pointers	2000	x3053
1157E	Minimum Array binary search, data structures, greedy	1700	x3832
1153E	Serval and Snake binary search, brute force, interactive	2100	x1031
1153D	Serval and Rooted Tree binary search, dfs and similar, dp, greedy, trees	1800	x2688
1119D	Frets On Fire binary search, sortings	1700	x3207
1119B	Alyona and a Narrow Fridge binary search, flows, greedy, sortings	1300	x5988
1141G	Privatization of Roads in Treeland binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	2500	x1119
1136E	Nastya Hasn't Written a Legend binary search, data structures	2500	x701
1138A	Sushi for Two binary search, greedy, implementation	900	x7662
1132D	Stressful Training binary search, greedy	2300	x1027
1129E	Legendary Tree binary search, interactive, trees	3000	x163
1129C	Morse Code binary search, data structures, dp, hashing, sortings, string suffix structures, strings	2300	x548
1131C	Birthday binary search, greedy, sortings	1200	x7408
1118D2	Coffee and Coursework (Hard Version) binary search, greedy	1900	x3025
1117C	Magic Ship binary search	1800	x2816
1109C	Sasha and a Patient Friend binary search, data structures, implementation	2800	x145
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2100	x1730
1111C	Creative Snap binary search, brute force, divide and conquer, math	1700	x3879
1107G	Vasya and Maximum Profit binary search, constructive algorithms, data structures, dp, dsu	2400	x528
1108F	MST Unification binary search, dsu, graphs, greedy	2300	x1230
1103B	Game with modulo binary search, constructive algorithms, interactive	2000	x2149
1100E	Andrew and Taxi binary search, dfs and similar, graphs	2200	x1354
1100C	NN and the Optical Illusion binary search, geometry, math	1300	x6472
1101F	Trucks and Cities binary search, dp	2500	x586
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2400	x882
1099F	Cookies binary search, data structures, dfs and similar, dp, games, trees	2300	x528
1099B	Squares and Segments binary search, constructive algorithms, math	1100	x7201
1098E	Fedya the Potter binary search, implementation, math, number theory	3400	x70
1098C	Construct a tree binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	2300	x504

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