Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
43:24:52
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constructive algorithms

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Problems

#	Name
1421D	Hexagons brute force, constructive algorithms, greedy, implementation, math, shortest paths	1900	x4056
1421C	Palindromifier constructive algorithms, strings	1400	x12550
1421B	Putting Bricks in the Wall constructive algorithms, implementation	1100	x12897
1420C1	Pokémon Army (easy version) constructive algorithms, dp, greedy	1300	x17111
1419E	Decryption constructive algorithms, implementation, math, number theory	2100	x3151
1419D2	Sage's Birthday (hard version) binary search, brute force, constructive algorithms, greedy, sortings, two pointers	1500	x14870
1419D1	Sage's Birthday (easy version) binary search, constructive algorithms, greedy, sortings	1000	x23719
1419B	Stairs brute force, constructive algorithms, greedy, implementation, math	1200	x15983
1416B	Make Them Equal constructive algorithms, greedy, math	2000	x5922
1415E	New Game Plus! constructive algorithms, greedy, math	2200	x2595
1415D	XOR-gun bitmasks, brute force, constructive algorithms	2000	x5208
1413A	Finding Sasuke constructive algorithms, math	800	x14606
1408F	Two Different constructive algorithms, divide and conquer	2300	x2273
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x9779
1408A	Circle Coloring constructive algorithms	800	x12403
1407E	Egor in the Republic of Dagestan constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths	2500	x1607
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x11506
1407A	Ahahahahahahahaha constructive algorithms, math	1100	x20116
1406D	Three Sequences constructive algorithms, data structures, greedy, math	2200	x3389
1406C	Link Cut Centroids constructive algorithms, dfs and similar, graphs, trees	1700	x9871
1405B	Array Cancellation constructive algorithms, implementation	1000	x21082
1405A	Permutation Forgery constructive algorithms	800	x21255
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x989
1404C	Fixed Point Removal binary search, constructive algorithms, data structures, greedy, two pointers	2300	x2510
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23535
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x20753
1401A	Distance and Axis constructive algorithms, math	900	x26932
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x16816
1400A	String Similarity constructive algorithms, strings	800	x26588
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x17756
1396E	Distance Matching constructive algorithms, dfs and similar, trees	3200	x323
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x10948
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15015
1395B	Boboniu Plays Chess constructive algorithms	1100	x15788
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10284
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16300
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x1946
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3242
1391E	Pairs of Pairs constructive algorithms, dfs and similar, graphs, greedy, trees	2600	x1443
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x4951
1391A	Suborrays constructive algorithms, math	800	x24031
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x38756
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x253
1385E	Directing Edges constructive algorithms, dfs and similar, graphs	2000	x6871
1384B2	Koa and the Beach (Hard Version) constructive algorithms, dp, greedy, implementation	2200	x2472
1384A	Common Prefixes constructive algorithms, greedy, strings	1200	x18414
1383D	Rearrange brute force, constructive algorithms, graphs, greedy, sortings	2800	x642
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4780
1381C	Mastermind constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers	2500	x1391
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x12786
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x19887
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x4636
1379E	Inverse Genealogy constructive algorithms, divide and conquer, dp, math, trees	2800	x392
1375H	Set Merging constructive algorithms, divide and conquer	3300	x400
1375G	Tree Modification brute force, constructive algorithms, dfs and similar, graph matchings, graphs, trees	2800	x1674
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x1941
1375E	Inversion SwapSort constructive algorithms, greedy, sortings	2500	x2779
1375D	Replace by MEX brute force, constructive algorithms, sortings	1900	x8767
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x20523
1375B	Neighbor Grid constructive algorithms, greedy	1200	x16938
1375A	Sign Flipping constructive algorithms, math	1100	x18062
1374F	Cyclic Shifts Sorting brute force, constructive algorithms, implementation, sortings	2400	x1267
1373F	Network Coverage binary search, constructive algorithms, data structures, greedy	2400	x1626
1373E	Sum of Digits brute force, constructive algorithms, dp, greedy	2200	x2702
1372C	Omkar and Baseball constructive algorithms, math	1500	x17435
1372A	Omkar and Completion constructive algorithms, implementation	800	x31539
1371D	Grid-00100 constructive algorithms, greedy, implementation	1600	x12833
1370E	Binary Subsequence Rotation binary search, constructive algorithms, data structures, greedy	2100	x4622
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23146
1368E	Ski Accidents constructive algorithms, graphs, greedy	2500	x1943
1368C	Even Picture constructive algorithms	1500	x13017
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x19115
1367D	Task On The Board constructive algorithms, greedy, implementation, sortings	1800	x8002
1367C	Social Distance constructive algorithms, greedy, math	1300	x22690
1366E	Two Arrays binary search, brute force, combinatorics, constructive algorithms, dp, two pointers	2100	x3976
1366D	Two Divisors constructive algorithms, math, number theory	2000	x10003
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x921
1365F	Swaps Again constructive algorithms, implementation, sortings	2100	x4314
1365E	Maximum Subsequence Value brute force, constructive algorithms	1900	x7516
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x16278
1365C	Rotation Matching constructive algorithms, data structures, greedy, implementation	1400	x22477
1365B	Trouble Sort constructive algorithms, implementation	1300	x26125
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1118
1364D	Ehab's Last Corollary constructive algorithms, dfs and similar, graphs, greedy, implementation, trees	2100	x4026
1364C	Ehab and Prefix MEXs brute force, constructive algorithms, greedy	1600	x12721
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1391
1361A	Johnny and Contribution constructive algorithms, graphs, greedy, sortings	1700	x8165
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x4297
1360G	A/B Matrix constructive algorithms, greedy, math	1900	x7404
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11902
1360C	Similar Pairs constructive algorithms, graph matchings, greedy, sortings	1100	x31823
1358F	Tasty Cookie binary search, constructive algorithms, greedy, implementation	2700	x438
1358E	Are You Fired? constructive algorithms, data structures, greedy, implementation	2400	x2086
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x818
1355D	Game With Array constructive algorithms, math	1400	x17463
1354F	Summoning Minions constructive algorithms, dp, flows, graph matchings, greedy, sortings	2500	x985
1353D	Constructing the Array constructive algorithms, data structures, sortings	1600	x17438
1353A	Most Unstable Array constructive algorithms, greedy, math	800	x39344
1352G	Special Permutation constructive algorithms	1600	x20008
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x16405