Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round (Div. 2)
5 days

→ Filter Problems

Difficulty: —

constructive algorithms

Add tag

Problems

#	Name
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12489
1328D	Carousel constructive algorithms, dp, graphs, greedy, math	1800	x12463
1421C	Palindromifier constructive algorithms, strings	1400	x12455
1408A	Circle Coloring constructive algorithms	800	x12384
1473C	No More Inversions constructive algorithms, math	1500	x12337
1647C	Madoka and Childish Pranks constructive algorithms, greedy	1300	x12328
11A	Increasing Sequence constructive algorithms, implementation, math	900	x12315
1746C	Permutation Operations constructive algorithms, greedy, implementation, math	1300	x12284
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12267
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12248
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x12173
1474C	Array Destruction brute force, constructive algorithms, data structures, greedy, implementation, sortings	1700	x12144
680A	Bear and Five Cards constructive algorithms, implementation	800	x12133
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x12112
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12056
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12044
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12044
534A	Exam constructive algorithms, implementation, math	1100	x11994
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x11983
1523B	Lord of the Values constructive algorithms	1100	x11945
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x11933
1583B	Omkar and Heavenly Tree constructive algorithms, trees	1200	x11898
1081A	Definite Game constructive algorithms, math	800	x11865
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x11855
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x11794
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11791
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x11786
1174C	Ehab and a Special Coloring Problem constructive algorithms, number theory	1300	x11768
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x11700
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x11678
779C	Dishonest Sellers constructive algorithms, greedy, sortings	1200	x11598
1942B	Bessie and MEX constructive algorithms, math		x11580
764B	Timofey and cubes constructive algorithms, implementation	900	x11575
1221B	Knights constructive algorithms, greedy	1100	x11563
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11539
1136B	Nastya Is Playing Computer Games constructive algorithms, math	1000	x11511
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11486
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11486
1873G	ABBC or BACB constructive algorithms, greedy	1500	x11478
1774B	Coloring constructive algorithms, greedy, math	1500	x11473
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11465
1608B	Build the Permutation constructive algorithms, greedy	1200	x11403
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x11355
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11289
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11286
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11272
1481C	Fence Painting brute force, constructive algorithms, greedy	1600	x11262
1305B	Kuroni and Simple Strings constructive algorithms, greedy, strings, two pointers	1200	x11235
546D	Soldier and Number Game constructive algorithms, dp, math, number theory	1700	x11161
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11140
1166B	All the Vowels Please constructive algorithms, math, number theory	1100	x11102
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x11060
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x11046
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11002
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x10999
1003B	Binary String Constructing constructive algorithms	1300	x10982
225A	Dice Tower constructive algorithms, greedy	1100	x10969
1316B	String Modification brute force, constructive algorithms, implementation, sortings, strings	1400	x10907
1099B	Squares and Segments binary search, constructive algorithms, math	1100	x10893
1037A	Packets constructive algorithms, greedy, math	1300	x10870
743A	Vladik and flights constructive algorithms, greedy, implementation	1200	x10839
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x10823
441C	Valera and Tubes constructive algorithms, dfs and similar, implementation	1500	x10809
1215C	Swap Letters constructive algorithms, greedy	1500	x10766
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x10762
1065B	Vasya and Isolated Vertices constructive algorithms, graphs	1300	x10714
1742F	Smaller constructive algorithms, greedy, strings	1500	x10668
484A	Bits bitmasks, constructive algorithms	1700	x10628
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x10575
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10574
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10558
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x10524
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10514
1740C	Bricks and Bags constructive algorithms, games, greedy, sortings	1400	x10507
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x10455
1091B	New Year and the Treasure Geolocation brute force, constructive algorithms, greedy, implementation	1200	x10429
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x10413
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10234
814A	An abandoned sentiment from past constructive algorithms, greedy, implementation, sortings	900	x10230
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x10209
1063A	Oh Those Palindromes constructive algorithms, strings	1300	x10200
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x10173
932A	Palindromic Supersequence constructive algorithms	800	x10123
1438C	Engineer Artem 2-sat, chinese remainder theorem, constructive algorithms, fft, flows	2000	x10122
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10070
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10069
899A	Splitting in Teams constructive algorithms, greedy, math	800	x10064
625B	War of the Corporations constructive algorithms, greedy, strings	1200	x10040
777A	Shell Game constructive algorithms, implementation, math	1000	x10027
801B	Valued Keys constructive algorithms, greedy, strings	900	x9996
110B	Lucky String constructive algorithms, strings	1100	x9909
1144D	Equalize Them All constructive algorithms, greedy	1400	x9888
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9880
1366D	Two Divisors constructive algorithms, math, number theory	2000	x9832
1236C	Labs constructive algorithms, greedy, implementation	1300	x9792
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x9783
1406C	Link Cut Centroids constructive algorithms, dfs and similar, graphs, trees	1700	x9779
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x9739
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x9710
414A	Mashmokh and Numbers constructive algorithms, number theory	1500	x9616