Problemset - Codeforces

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Educational Codeforces Round 175 (Rated for Div. 2)
27:36:31
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Problems

#	Name
1217E	Sum Queries? data structures, greedy, implementation, math	2300	x1977
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x5533
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7573
1217B	Zmei Gorynich greedy, math	1600	x11430
1217A	Creating a Character binary search, math	1300	x15191
1216F	Wi-Fi data structures, dp, greedy	2100	x2766
1216E2	Numerical Sequence (hard version) binary search, math	2200	x1529
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x3512
1216D	Swords math	1300	x11355
1216C	White Sheet geometry, math	1700	x9511
1216B	Shooting greedy, implementation, sortings	900	x18718
1216A	Prefixes strings	800	x18872
1215F	Radio Stations 2-sat	2700	x1032
1215E	Marbles bitmasks, dp	2200	x3140
1215D	Ticket Game games, greedy, math	1700	x6252
1215C	Swap Letters constructive algorithms, greedy	1500	x11400
1215B	The Number of Products combinatorics, dp, implementation	1400	x13818
1215A	Yellow Cards greedy, implementation, math	1000	x11662
1214H	Tiles Placement constructive algorithms, dfs and similar, trees	2800	x412
1214G	Feeling Good bitmasks, data structures	3200	x314
1214F	Employment greedy, sortings	2700	x464
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2753
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x5265
1214C	Bad Sequence data structures, greedy	1200	x13517
1214B	Badges brute force, math	1100	x10957
1214A	Optimal Currency Exchange brute force, math	1400	x9191
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x7732
1213F	Unstable String Sort data structures, dfs and similar, dsu, graphs, greedy, implementation, strings	2100	x2658
1213E	Two Small Strings brute force, constructive algorithms	1900	x5259
1213D2	Equalizing by Division (hard version) brute force, math, sortings	1600	x11620
1213D1	Equalizing by Division (easy version) brute force, implementation	1500	x11535
1213C	Book Reading math	1200	x18708
1213B	Bad Prices data structures, implementation	1100	x27419
1213A	Chips Moving math	900	x24451
1211I	Unusual Graph *special problem, graphs	3000	x42
1211H	Road Repair in Treeland *special problem, binary search, dp, trees	3100	x47
1211G	King's Path *special problem, math, trees	2500	x73
1211F	kotlinkotlinkotlinkotlin... *special problem, graphs, implementation, strings	2300	x129
1211E	Double Permutation Inc. *special problem, binary search, greedy	2000	x198
1211D	Teams *special problem, binary search, greedy, math	2000	x233
1211C	Ice Cream *special problem, greedy, sortings	1700	x525
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x770
1211A	Three Problems *special problem, implementation	1000	x1465
1210G	Mateusz and Escape Room dp	3500	x182
1210F2	Marek and Matching (hard version) brute force, probabilities	3200	x227
1210F1	Marek and Matching (easy version) brute force, probabilities	3100	x217
1210E	Wojtek and Card Tricks math	2700	x411
1210D	Konrad and Company Evaluation graphs	2400	x1528
1210C	Kamil and Making a Stream math, number theory, trees	2000	x3374
1210B	Marcin and Training Camp brute force, greedy	1700	x5857
1210A	Anadi and Domino brute force, graphs	1700	x5203
1209H	Moving Walkways data structures, greedy, math	3300	x149
1209G2	Into Blocks (hard version) data structures	3200	x466
1209G1	Into Blocks (easy version) data structures, dsu, greedy, implementation, two pointers	2000	x3380
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x1232
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x2040
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x3027
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x9663
1209C	Paint the Digits constructive algorithms, greedy, implementation	1500	x7614
1209B	Koala and Lights implementation, math, number theory	1300	x8260
1209A	Paint the Numbers greedy, implementation, math	800	x12404
1208H	Red Blue Tree data structures, implementation, trees	3500	x155
1208G	Polygons greedy, math, number theory	2800	x802
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2655
1208E	Let Them Slide data structures, implementation	2200	x2079
1208D	Restore Permutation binary search, data structures, greedy, implementation	1900	x5042
1208C	Magic Grid constructive algorithms	1800	x6117
1208B	Uniqueness binary search, brute force, implementation, two pointers	1500	x10717
1208A	XORinacci math	900	x17067
1207G	Indie Album data structures, dfs and similar, hashing, string suffix structures, strings, trees	2700	x1075
1207F	Remainder Problem brute force, data structures, implementation	2100	x5578
1207E	XOR Guessing bitmasks, interactive, math	1900	x6138
1207D	Number Of Permutations combinatorics	1800	x6181
1207C	Gas Pipeline dp, greedy	1500	x9975
1207B	Square Filling constructive algorithms, greedy, implementation	1200	x13402
1207A	There Are Two Types Of Burgers brute force, greedy, implementation, math	800	x22335
1206B	Make Product Equal One dp, implementation	900	x27530
1206A	Choose Two Numbers math, sortings	800	x25034
1205F	Beauty of a Permutation constructive algorithms, math	3400	x127
1205E	Expected Value Again combinatorics, strings	3100	x299
1205D	Almost All constructive algorithms, trees	2700	x683
1205C	Palindromic Paths implementation, interactive	2400	x1202
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6856
1205A	Almost Equal constructive algorithms, greedy, math	1200	x14345
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1745
1204D2	Kirk and a Binary String (hard version) data structures, greedy, math, strings	2100	x3279
1204D1	Kirk and a Binary String (easy version) brute force, greedy, strings	2000	x3104
1204C	Anna, Svyatoslav and Maps dp, graphs, greedy, shortest paths	1700	x6819
1204B	Mislove Has Lost an Array greedy, math	900	x17691
1204A	BowWow and the Timetable math	1000	x21321
1203F2	Complete the Projects (hard version) dp, greedy	2300	x2980
1203F1	Complete the Projects (easy version) greedy	2100	x3675
1203E	Boxers greedy, sortings	1500	x14141
1203D2	Remove the Substring (hard version) binary search, greedy, implementation, two pointers	1700	x7582
1203D1	Remove the Substring (easy version) greedy, implementation	1600	x8982
1203C	Common Divisors implementation, math	1300	x21450
1203B	Equal Rectangles greedy, math	1200	x16166
1203A	Circle of Students implementation	1000	x16874
1202F	You Are Given Some Letters... binary search, implementation, math	2700	x424
1202E	You Are Given Some Strings... brute force, string suffix structures, strings	2400	x2213