Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Codeforces Round 977 (Div. 2)
2 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

constructive algorithms

Add tag

Problems

#	Name
715A	Plus and Square Root constructive algorithms, math	1600	x5611
713B	Searching Rectangles binary search, constructive algorithms, interactive	2200	x1451
711B	Chris and Magic Square constructive algorithms, implementation	1400	x8416
710C	Magic Odd Square constructive algorithms, math	1500	x5099
708B	Recover the String constructive algorithms, greedy, implementation, math	1900	x3242
708A	Letters Cyclic Shift constructive algorithms, greedy, implementation, strings	1200	x8990
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5717
690F2	Tree of Life (medium) constructive algorithms, hashing, trees	2700	x81
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5255
688B	Lovely Palindromes constructive algorithms, math	1000	x32009
686B	Little Robber Girl's Zoo constructive algorithms, implementation, sortings	1100	x7783
686A	Free Ice Cream constructive algorithms, implementation	800	x37471
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x21643
681D	Gifts by the List constructive algorithms, dfs and similar, graphs, trees	2000	x1766
681C	Heap Operations constructive algorithms, data structures, greedy	1600	x7710
680B	Bear and Finding Criminals constructive algorithms, implementation	1000	x24304
680A	Bear and Five Cards constructive algorithms, implementation	800	x12312
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x12976
676A	Nicholas and Permutation constructive algorithms, implementation	800	x13816
675C	Money Transfers constructive algorithms, data structures, greedy, sortings	2100	x3648
675B	Restoring Painting brute force, constructive algorithms, math	1400	x7382
672B	Different is Good constructive algorithms, implementation, strings	1000	x17345
670F	Restore a Number brute force, constructive algorithms, strings	2300	x859
670A	Holidays brute force, constructive algorithms, greedy, math	900	x16931
667B	Coat of Anticubism constructive algorithms, geometry	1100	x5616
665D	Simple Subset constructive algorithms, greedy, number theory	1800	x3479
663A	Rebus constructive algorithms, expression parsing, greedy, math	1800	x3296
662D	International Olympiad constructive algorithms, greedy, implementation, math	2000	x1632
659B	Qualifying Contest constructive algorithms, sortings	1300	x6266
652F	Ants on a Circle constructive algorithms, math	2800	x550
649D	Дефрагментация памяти constructive algorithms, greedy, implementation	1600	x356
649C	Печать условий constructive algorithms, greedy, sortings	1500	x455
649B	Этажи constructive algorithms	1400	x535
649A	Любимые числа Поликарпа constructive algorithms, implementation	1000	x1212
648C	Путь Робота constructive algorithms, dfs and similar, graphs	1100	x945
648B	Собери стол constructive algorithms, sortings	800	x1441
648A	Наибольший подъем constructive algorithms, implementation	900	x675
645A	Amity Assessment brute force, constructive algorithms, implementation	1200	x3445
644B	Processing Queries *special problem, constructive algorithms, data structures, two pointers	1700	x2699
644A	Parliament of Berland *special problem, constructive algorithms	1000	x4450
643B	Bear and Two Paths constructive algorithms, graphs	1600	x3168
641C	Little Artem and Dance brute force, constructive algorithms, implementation	1800	x3074
639B	Bear and Forgotten Tree 3 constructive algorithms, graphs, trees	1600	x6502
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3863
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2423
637B	Chat Order *special problem, binary search, constructive algorithms, data structures, sortings	1200	x16374
637A	Voting for Photos *special problem, constructive algorithms, implementation	1000	x5408
634A	Island Puzzle constructive algorithms, implementation	1300	x3309
633E	Startup Funding binary search, constructive algorithms, data structures, probabilities, two pointers	2400	x583
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x6664
632B	Alice, Bob, Two Teams brute force, constructive algorithms	1400	x3994
631B	Print Check constructive algorithms, implementation	1200	x7377
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13370
626B	Cards constructive algorithms, dp, math	1300	x6602
625D	Finals in arithmetic constructive algorithms, implementation, math	2400	x632
625C	K-special Tables constructive algorithms, implementation	1300	x6821
625B	War of the Corporations constructive algorithms, greedy, strings	1200	x10385
623A	Graph and String constructive algorithms, graphs	1800	x4470
622D	Optimal Number Permutation constructive algorithms	1900	x2981
621D	Rat Kwesh and Cheese brute force, constructive algorithms, math	2400	x986
618F	Double Knapsack constructive algorithms, two pointers	3000	x1387
618B	Guess the Permutation constructive algorithms	1100	x7971
617D	Polyline constructive algorithms, implementation	1700	x4203
613C	Necklace constructive algorithms, math	2500	x1006
612E	Square Root of Permutation combinatorics, constructive algorithms, dfs and similar, graphs, math	2200	x1684
611H	New Year and Forgotten Tree constructive algorithms, flows, graphs	3200	x583
610D	Vika and Segments constructive algorithms, data structures, geometry, two pointers	2300	x1492
610C	Harmony Analysis constructive algorithms	1800	x2841
610B	Vika and Squares constructive algorithms, implementation	1300	x7254
609B	The Best Gift constructive algorithms, implementation	1100	x9041
605B	Lazy Student constructive algorithms, data structures, graphs	1700	x3444
605A	Sorting Railway Cars constructive algorithms, greedy	1600	x7118
600C	Make Palindrome constructive algorithms, greedy, strings	1800	x6106
595A	Vitaly and Night constructive algorithms, implementation	800	x14520
593C	Beautiful Function constructive algorithms, math	2200	x284
584E	Anton and Ira constructive algorithms, greedy, math	2300	x1423
584C	Marina and Vasya constructive algorithms, greedy, strings	1700	x6193
582B	Once Again... constructive algorithms, dp, matrices	1900	x3432
582A	GCD Table constructive algorithms, greedy, number theory	1700	x7759
581D	Three Logos bitmasks, brute force, constructive algorithms, geometry, implementation, math	1700	x3683
578E	Walking! constructive algorithms, greedy	2700	x639
576C	Points on Plane constructive algorithms, divide and conquer, geometry, greedy, sortings	2100	x3414
576B	Invariance of Tree constructive algorithms, dfs and similar, greedy, trees	2100	x1807
575D	Tablecity constructive algorithms, implementation	1700	x1826
573C	Bear and Drawing constructive algorithms, dfs and similar, trees	2300	x970
571C	CNF 2 constructive algorithms, dfs and similar, graphs, greedy	2500	x667
570D	Tree Requests binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees	2200	x7117
570C	Replacement constructive algorithms, data structures, implementation	1600	x9133
570B	Simple Game constructive algorithms, games, greedy, implementation, math	1300	x16110
566E	Restoring Map bitmasks, constructive algorithms, trees	3200	x632
566B	Replicating Processes constructive algorithms, greedy	2600	x271
560B	Gerald is into Art constructive algorithms, implementation	1200	x7918
557B	Pasha and Tea constructive algorithms, implementation, math, sortings	1500	x7184
553B	Kyoya and Permutation binary search, combinatorics, constructive algorithms, greedy, implementation, math	1900	x2116
551B	ZgukistringZ brute force, constructive algorithms, implementation, strings	1800	x3857
550E	Brackets in Implications constructive algorithms, greedy, implementation, math	2200	x1392
550D	Regular Bridge constructive algorithms, graphs, implementation	1900	x3340
549G	Happy Line constructive algorithms, greedy, sortings	2200	x2436
549B	Looksery Party constructive algorithms, dfs and similar, graphs, greedy	2300	x1498
547D	Mike and Fish constructive algorithms, dfs and similar, graphs	2600	x2573