Problemset - Codeforces

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Codeforces Round 978 (Div. 2)
6 days

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Problems

#	Name
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1486
1227D2	Optimal Subsequences (Hard Version) data structures, greedy	1800	x4340
1227D1	Optimal Subsequences (Easy Version) data structures, greedy	1600	x6406
1227C	Messy constructive algorithms	1700	x5526
1227B	Box constructive algorithms	1200	x9657
1227A	Math Problem math	1100	x9822
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x549
1225F	Tree Factory constructive algorithms, greedy, trees	2500	x885
1225E	Rock Is Push binary search, dp	2200	x1889
1225D	Power Products hashing, math, number theory	1800	x8010
1225C	p-binary bitmasks, brute force, math	1600	x8960
1225B2	TV Subscriptions (Hard Version) implementation, two pointers	1300	x10608
1225B1	TV Subscriptions (Easy Version) implementation	1000	x11903
1225A	Forgetting Things math	900	x15811
1223G	Wooden Raft binary search, math, number theory	3200	x250
1223F	Stack Exterminable Arrays data structures, divide and conquer, dp, hashing	2600	x2052
1223E	Paint the Tree dp, sortings, trees	2100	x2610
1223D	Sequence Sorting dp, greedy, two pointers	2000	x4045
1223C	Save the Nature binary search, greedy	1600	x8332
1223B	Strings Equalization strings	1000	x14874
1223A	CME math	800	x21608
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x681
1221F	Choose a Square binary search, data structures, sortings	2400	x1050
1221E	Game With String games	2500	x1088
1221D	Make The Fence Great Again dp	1800	x9104
1221C	Perfect Team binary search, math	1200	x21074
1221B	Knights constructive algorithms, greedy	1100	x11957
1221A	2048 Game brute force, greedy, math	1000	x16839
1220G	Geolocation geometry	3400	x54
1220F	Gardener Alex binary search, data structures	2700	x695
1220E	Tourism dfs and similar, dp, dsu, graphs, greedy, trees	2200	x2763
1220D	Alex and Julian bitmasks, math, number theory	1900	x3898
1220C	Substring Game in the Lesson games, greedy, strings	1300	x10209
1220B	Multiplication Table math, number theory	1300	x11609
1220A	Cards implementation, sortings, strings	800	x29736
1219G	Harvester implementation	2000	x660
1219C	Periodic integer number implementation, strings	1700	x1786
1218I	The Light Square 2-sat, dfs and similar, greedy	2100	x600
1218H	Function Composition dfs and similar	2900	x115
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x100
1218F	Workout plan data structures, greedy	1500	x2958
1218E	Product Tuples divide and conquer, fft	2500	x378
1218D	Xor Spanning Tree divide and conquer, fft, graphs	2400	x498
1218C	Jumping Transformers dp	2600	x180
1218B	Guarding warehouses data structures, geometry	3000	x70
1218A	BubbleReactor dp, graphs	2800	x131
1217F	Forced Online Queries Problem data structures, divide and conquer, dsu, graphs, trees	2600	x592
1217E	Sum Queries? data structures, greedy, implementation, math	2300	x1880
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x5297
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7450
1217B	Zmei Gorynich greedy, math	1600	x11214
1217A	Creating a Character binary search, math	1300	x15009
1216F	Wi-Fi data structures, dp, greedy	2100	x2651
1216E2	Numerical Sequence (hard version) binary search, math	2200	x1463
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x3445
1216D	Swords math	1300	x11144
1216C	White Sheet geometry, math	1700	x9222
1216B	Shooting greedy, implementation, sortings	900	x18416
1216A	Prefixes strings	800	x18671
1215F	Radio Stations 2-sat	2700	x978
1215E	Marbles bitmasks, dp	2200	x3029
1215D	Ticket Game games, greedy, math	1700	x6154
1215C	Swap Letters constructive algorithms, greedy	1500	x11200
1215B	The Number of Products combinatorics, dp, implementation	1400	x12988
1215A	Yellow Cards greedy, implementation, math	1000	x11535
1214H	Tiles Placement constructive algorithms, dfs and similar, trees	2800	x393
1214G	Feeling Good bitmasks, data structures	3200	x311
1214F	Employment greedy, sortings	2700	x430
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2697
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x5181
1214C	Bad Sequence data structures, greedy	1200	x13264
1214B	Badges brute force, math	1100	x10845
1214A	Optimal Currency Exchange brute force, math	1400	x9094
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x7270
1213F	Unstable String Sort data structures, dfs and similar, dsu, graphs, greedy, implementation, strings	2100	x2597
1213E	Two Small Strings brute force, constructive algorithms	1900	x5172
1213D2	Equalizing by Division (hard version) brute force, math, sortings	1600	x11440
1213D1	Equalizing by Division (easy version) brute force, implementation	1500	x11385
1213C	Book Reading math	1200	x18445
1213B	Bad Prices data structures, implementation	1100	x26639
1213A	Chips Moving math	900	x24079
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	x124
1211E	Double Permutation Inc. *special problem, binary search, greedy	2000	x193
1211D	Teams *special problem, binary search, greedy, math	2000	x229
1211C	Ice Cream *special problem, greedy, sortings	1700	x486
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x764
1211A	Three Problems *special problem, implementation	1000	x1404
1210G	Mateusz and Escape Room dp	3500	x168
1210F2	Marek and Matching (hard version) brute force, probabilities	3200	x213
1210F1	Marek and Matching (easy version) brute force, probabilities	3100	x205
1210E	Wojtek and Card Tricks math	2700	x406
1210D	Konrad and Company Evaluation graphs	2400	x1511
1210C	Kamil and Making a Stream math, number theory, trees	2000	x3329
1210B	Marcin and Training Camp brute force, greedy	1700	x5824
1210A	Anadi and Domino brute force, graphs	1700	x5164
1209H	Moving Walkways data structures, greedy, math	3300	x141
1209G2	Into Blocks (hard version) data structures	3200	x442