Problemset - Codeforces

→ Pay attention

Before contest
Educational Codeforces Round 109 (Rated for Div. 2)
4 days

→ Filter Problems

Difficulty: —

constructive algorithms

Add tag

Problems

#	Name
1063A	Oh Those Palindromes constructive algorithms, strings	1300	x8228
1003B	Binary String Constructing constructive algorithms	1300	x8032
1236C	Labs constructive algorithms, greedy, implementation	1300	x7999
1004B	Sonya and Exhibition constructive algorithms, greedy, implementation, math	1300	x7596
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x7575
509B	Painting Pebbles constructive algorithms, greedy, implementation	1300	x7551
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x6987
962B	Students in Railway Carriage constructive algorithms, greedy, implementation	1300	x6428
347A	Difference Row constructive algorithms, implementation, sortings	1300	x6352
899C	Dividing the numbers constructive algorithms, graphs, math	1300	x6339
625C	K-special Tables constructive algorithms, implementation	1300	x5769
626B	Cards constructive algorithms, dp, math	1300	x5512
610B	Vika and Squares constructive algorithms, implementation	1300	x5431
659B	Qualifying Contest constructive algorithms, sortings	1300	x5388
909B	Segments constructive algorithms, math	1300	x5362
303A	Lucky Permutation Triple constructive algorithms, implementation, math	1300	x5310
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x5289
814B	An express train to reveries constructive algorithms	1300	x4971
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x4502
311A	The Closest Pair constructive algorithms, implementation	1300	x3495
1425H	Huge Boxes of Animal Toys constructive algorithms	1300	x2765
634A	Island Puzzle constructive algorithms, implementation	1300	x2741
730H	Delete Them constructive algorithms, implementation	1300	x2500
40A	Find Color constructive algorithms, geometry, implementation, math	1300	x2253
238A	Not Wool Sequences constructive algorithms, math	1300	x1759
85A	Domino constructive algorithms, implementation	1300	x1472
1348B	Phoenix and Beauty constructive algorithms, data structures, greedy, sortings	1400	x17114
1365C	Rotation Matching constructive algorithms, data structures, greedy, implementation	1400	x15305
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x13821
401C	Team constructive algorithms, greedy, implementation	1400	x13097
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x12929
538B	Quasi Binary constructive algorithms, dp, greedy, implementation	1400	x12886
1355D	Game With Array constructive algorithms, math	1400	x12756
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x12194
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x11074
1108D	Diverse Garland constructive algorithms, dp, greedy	1400	x10925
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x10779
1270C	Make Good bitmasks, constructive algorithms, math	1400	x9978
1453B	Suffix Operations constructive algorithms, implementation	1400	x9225
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x8967
1421C	Palindromifier constructive algorithms, strings	1400	x8810
1316B	String Modification brute force, constructive algorithms, implementation, sortings, strings	1400	x8590
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x8142
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x7939
1103A	Grid game constructive algorithms, implementation	1400	x7845
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x7759
1144D	Equalize Them All constructive algorithms, greedy	1400	x7609
1266C	Diverse Matrix constructive algorithms, greedy, math, number theory	1400	x7560
525B	Pasha and String constructive algorithms, greedy, math, strings	1400	x7314
711B	Chris and Magic Square constructive algorithms, implementation	1400	x7300
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x7195
1088C	Ehab and a 2-operation task constructive algorithms, greedy, math	1400	x6473
675B	Restoring Painting brute force, constructive algorithms, math	1400	x6192
1004C	Sonya and Robots constructive algorithms, implementation	1400	x6120
544B	Sea and Islands constructive algorithms, implementation	1400	x5987
911C	Three Garlands brute force, constructive algorithms	1400	x5923
479B	Towers brute force, constructive algorithms, greedy, implementation, sortings	1400	x5898
357B	Flag Day constructive algorithms, implementation	1400	x5861
359B	Permutation constructive algorithms, dp, math	1400	x5319
369B	Valera and Contest constructive algorithms, implementation, math	1400	x4841
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x4608
313C	Ilya and Matrix constructive algorithms, greedy, implementation, sortings	1400	x4458
808C	Tea Party constructive algorithms, greedy, sortings	1400	x4439
748C	Santa Claus and Robot constructive algorithms, math	1400	x4119
727C	Guess the Array constructive algorithms, interactive, math	1400	x3906
417C	Football constructive algorithms, graphs, implementation	1400	x3849
865A	Save the problem! constructive algorithms	1400	x3712
803A	Maximal Binary Matrix constructive algorithms	1400	x3545
632B	Alice, Bob, Two Teams brute force, constructive algorithms	1400	x3115
286A	Lucky Permutation constructive algorithms, math	1400	x2683
8B	Obsession with Robots constructive algorithms, graphs, implementation	1400	x2633
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2270
335A	Banana binary search, constructive algorithms, greedy	1400	x1563
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x13311
1372C	Omkar and Baseball constructive algorithms, math	1500	x12457
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x12331
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x12218
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x10488
1368C	Even Picture constructive algorithms	1500	x10470
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x10039
1419D2	Sage's Birthday (hard version) binary search, brute force, constructive algorithms, greedy, sortings, two pointers	1500	x9963
1325C	Ehab and Path-etic MEXs constructive algorithms, dfs and similar, greedy, trees	1500	x9943
1242A	Tile Painting constructive algorithms, math, number theory	1500	x9623
1426D	Non-zero Segments constructive algorithms, data structures, greedy, sortings	1500	x9618
1283C	Friends and Gifts constructive algorithms, data structures, math	1500	x9287
1473C	No More Inversions constructive algorithms, math	1500	x9134
441C	Valera and Tubes constructive algorithms, dfs and similar, implementation	1500	x8386
1487C	Minimum Ties brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math	1500	x8351
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x8226
1215C	Swap Letters constructive algorithms, greedy	1500	x7783
414A	Mashmokh and Numbers constructive algorithms, number theory	1500	x7681
1114B	Yet Another Array Partitioning Task constructive algorithms, greedy, sortings	1500	x7496
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x7427
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x7025
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x6995
1439A1	Binary Table (Easy Version) constructive algorithms, implementation	1500	x6976
282C	XOR and OR constructive algorithms, implementation, math	1500	x6737
468A	24 Game constructive algorithms, greedy, math	1500	x6494
496C	Removing Columns brute force, constructive algorithms, implementation	1500	x6380
1136C	Nastya Is Transposing Matrices constructive algorithms, sortings	1500	x6359