Problemset - Codeforces

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Codeforces Round 978 (Div. 2)
6 days

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Problems

#	Name
1237D	Balanced Playlist binary search, data structures, implementation	2000	x4196
1237C2	Balanced Removals (Harder) binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings	1900	x4334
1237C1	Balanced Removals (Easier) constructive algorithms, geometry, greedy	1700	x6086
1237B	Balanced Tunnel data structures, sortings, two pointers	1300	x16066
1237A	Balanced Rating Changes implementation, math	1000	x19857
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	3000	x177
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x659
1236D	Alice and the Doll brute force, data structures, greedy, implementation	2300	x1672
1236C	Labs constructive algorithms, greedy, implementation	1300	x10159
1236B	Alice and the List of Presents combinatorics, math	1500	x11065
1236A	Stones brute force, greedy, math	800	x16297
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2589
1234E	Special Permutations math	2000	x2786
1234D	Distinct Characters Queries data structures	1600	x15035
1234C	Pipes dp, implementation	1500	x12611
1234B2	Social Network (hard version) data structures, implementation	1300	x16908
1234B1	Social Network (easy version) implementation	1000	x18748
1234A	Equalize Prices Again math	800	x27825
1231E	Middle-Out constructive algorithms, greedy, strings	2200	x838
1231C	Increasing Matrix greedy	1100	x3850
1230B	Ania and Minimizing greedy, implementation	1000	x18707
1230A	Dawid and Bags of Candies brute force, implementation	800	x21527
1228F	One Node is Gone constructive algorithms, implementation, trees	2500	x437
1228E	Another Filling the Grid combinatorics, dp, math	2300	x2739
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x5212
1228C	Primes and Multiplication math, number theory	1700	x9030
1228B	Filling the Grid implementation, math	1400	x11514
1228A	Distinct Digits brute force, implementation	800	x21672
1227G	Not Same constructive algorithms	2600	x1033
1227F2	Wrong Answer on test 233 (Hard Version) combinatorics, math	2400	x1508
1227F1	Wrong Answer on test 233 (Easy Version) dp	2200	x1811
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1486
1227D2	Optimal Subsequences (Hard Version) data structures, greedy	1800	x4336
1227D1	Optimal Subsequences (Easy Version) data structures, greedy	1600	x6403
1227C	Messy constructive algorithms	1700	x5526
1227B	Box constructive algorithms	1200	x9657
1227A	Math Problem math	1100	x9821
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	x8009
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	x2609
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	x9102
1221C	Perfect Team binary search, math	1200	x21072
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	x10208
1220B	Multiplication Table math, number theory	1300	x11608
1220A	Cards implementation, sortings, strings	800	x29735
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	x591
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	x15008
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	x11534
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