Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
44:21:20
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Problems

#	Name
1215A	Yellow Cards greedy, implementation, math	1000	x11616
1214H	Tiles Placement constructive algorithms, dfs and similar, trees	2800	x403
1214G	Feeling Good bitmasks, data structures	3200	x312
1214F	Employment greedy, sortings	2700	x462
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2714
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x5236
1214C	Bad Sequence data structures, greedy	1200	x13403
1214B	Badges brute force, math	1100	x10895
1214A	Optimal Currency Exchange brute force, math	1400	x9145
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x7501
1213F	Unstable String Sort data structures, dfs and similar, dsu, graphs, greedy, implementation, strings	2100	x2629
1213E	Two Small Strings brute force, constructive algorithms	1900	x5235
1213D2	Equalizing by Division (hard version) brute force, math, sortings	1600	x11521
1213D1	Equalizing by Division (easy version) brute force, implementation	1500	x11470
1213C	Book Reading math	1200	x18602
1213B	Bad Prices data structures, implementation	1100	x27090
1213A	Chips Moving math	900	x24276
1211I	Unusual Graph *special problem, graphs	3000	x40
1211H	Road Repair in Treeland *special problem, binary search, dp, trees	3100	x45
1211G	King's Path *special problem, math, trees	2500	x71
1211F	kotlinkotlinkotlinkotlin... *special problem, graphs, implementation, strings	2300	x127
1211E	Double Permutation Inc. *special problem, binary search, greedy	2000	x196
1211D	Teams *special problem, binary search, greedy, math	2000	x231
1211C	Ice Cream *special problem, greedy, sortings	1700	x499
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x768
1211A	Three Problems *special problem, implementation	1000	x1438
1210G	Mateusz and Escape Room dp	3500	x176
1210F2	Marek and Matching (hard version) brute force, probabilities	3200	x224
1210F1	Marek and Matching (easy version) brute force, probabilities	3100	x215
1210E	Wojtek and Card Tricks math	2700	x410
1210D	Konrad and Company Evaluation graphs	2400	x1519
1210C	Kamil and Making a Stream math, number theory, trees	2000	x3365
1210B	Marcin and Training Camp brute force, greedy	1700	x5840
1210A	Anadi and Domino brute force, graphs	1700	x5182
1209H	Moving Walkways data structures, greedy, math	3300	x142
1209G2	Into Blocks (hard version) data structures	3200	x456
1209G1	Into Blocks (easy version) data structures, dsu, greedy, implementation, two pointers	2000	x3297
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x1191
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x2019
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x3000
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x9519
1209C	Paint the Digits constructive algorithms, greedy, implementation	1500	x7558
1209B	Koala and Lights implementation, math, number theory	1300	x8218
1209A	Paint the Numbers greedy, implementation, math	800	x12333
1208H	Red Blue Tree data structures, implementation, trees	3500	x153
1208G	Polygons greedy, math, number theory	2800	x785
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2574
1208E	Let Them Slide data structures, implementation	2200	x2055
1208D	Restore Permutation binary search, data structures, greedy, implementation	1900	x4979
1208C	Magic Grid constructive algorithms	1800	x6069
1208B	Uniqueness binary search, brute force, implementation, two pointers	1500	x10626
1208A	XORinacci math	900	x16937
1207G	Indie Album data structures, dfs and similar, hashing, string suffix structures, strings, trees	2700	x1048
1207F	Remainder Problem brute force, data structures, implementation	2100	x5442
1207E	XOR Guessing bitmasks, interactive, math	1900	x6065
1207D	Number Of Permutations combinatorics	1800	x6135
1207C	Gas Pipeline dp, greedy	1500	x9910
1207B	Square Filling constructive algorithms, greedy, implementation	1200	x13331
1207A	There Are Two Types Of Burgers brute force, greedy, implementation, math	800	x22159
1206B	Make Product Equal One dp, implementation	900	x27224
1206A	Choose Two Numbers math, sortings	800	x24671
1205F	Beauty of a Permutation constructive algorithms, math	3400	x123
1205E	Expected Value Again combinatorics, strings	3100	x286
1205D	Almost All constructive algorithms, trees	2700	x668
1205C	Palindromic Paths implementation, interactive	2400	x1188
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6781
1205A	Almost Equal constructive algorithms, greedy, math	1200	x14250
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1711
1204D2	Kirk and a Binary String (hard version) data structures, greedy, math, strings	2100	x3265
1204D1	Kirk and a Binary String (easy version) brute force, greedy, strings	2000	x3091
1204C	Anna, Svyatoslav and Maps dp, graphs, greedy, shortest paths	1700	x6769
1204B	Mislove Has Lost an Array greedy, math	900	x17601
1204A	BowWow and the Timetable math	1000	x21094
1203F2	Complete the Projects (hard version) dp, greedy	2300	x2943
1203F1	Complete the Projects (easy version) greedy	2100	x3614
1203E	Boxers greedy, sortings	1500	x13982
1203D2	Remove the Substring (hard version) binary search, greedy, implementation, two pointers	1700	x7492
1203D1	Remove the Substring (easy version) greedy, implementation	1600	x8869
1203C	Common Divisors implementation, math	1300	x21027
1203B	Equal Rectangles greedy, math	1200	x16080
1203A	Circle of Students implementation	1000	x16781
1202F	You Are Given Some Letters... binary search, implementation, math	2700	x419
1202E	You Are Given Some Strings... brute force, string suffix structures, strings	2400	x2171
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x5160
1202C	You Are Given a WASD-string... brute force, data structures, dp, greedy, implementation, math, strings	2100	x2588
1202B	You Are Given a Decimal String... brute force, dp, shortest paths	1700	x4598
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9542
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x148
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x132
1201D	Treasure Hunting binary search, dp, greedy, implementation	2100	x2388
1201C	Maximum Median binary search, greedy, math, sortings	1400	x24572
1201B	Zero Array greedy, math	1500	x19392
1201A	Important Exam implementation, strings	900	x15826
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x1087
1200E	Compress Words brute force, hashing, implementation, string suffix structures, strings	2000	x7866
1200D	White Lines brute force, data structures, dp, implementation, two pointers	1900	x4162
1200C	Round Corridor math, number theory	1400	x9935
1200B	Block Adventure dp, greedy	1200	x14051
1200A	Hotelier brute force, data structures, implementation	800	x20539
1199B	Water Lily geometry, math	1000	x20810