Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round #715 (Div. 1)
29:23:20
Register now »

*has extra registration

Before contest
Codeforces Round #715 (Div. 2)
29:23:20
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

dsu

Add tag

Problems

#	Name
1249B1	Books Exchange (easy version) dsu, math	1000	x14529
501B	Misha and Changing Handles data structures, dsu, strings	1100	x10231
217A	Ice Skating brute force, dfs and similar, dsu, graphs	1200	x13370
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x7663
959B	Mahmoud and Ehab and the message dsu, greedy, implementation	1200	x6788
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x11328
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x7382
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x6273
886C	Petya and Catacombs dsu, greedy, implementation, trees	1300	x4736
1055B	Alice and Hairdresser dsu, implementation	1300	x3702
277A	Learning Languages dfs and similar, dsu	1400	x11595
1292A	NEKO's Maze Game data structures, dsu, implementation	1400	x10421
1167C	News Distribution dfs and similar, dsu, graphs	1400	x9804
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x7887
445B	DZY Loves Chemistry dfs and similar, dsu, greedy	1400	x7706
1130C	Connect brute force, dfs and similar, dsu	1400	x6099
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x4621
60B	Serial Time! dfs and similar, dsu	1400	x3134
1332C	K-Complete Word dfs and similar, dsu, greedy, implementation, strings	1500	x11416
977E	Cyclic Components dfs and similar, dsu, graphs	1500	x10229
771A	Bear and Friendship Condition dfs and similar, dsu, graphs	1500	x9446
1263D	Secret Passwords dfs and similar, dsu, graphs	1500	x8394
1139C	Edgy Trees dfs and similar, dsu, graphs, math, trees	1500	x8009
356A	Knight Tournament data structures, dsu	1500	x8005
103B	Cthulhu dfs and similar, dsu, graphs	1500	x5986
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x5693
490B	Queue dsu, implementation	1500	x4833
875B	Sorting the Coins dsu, implementation, sortings, two pointers	1500	x4494
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x2562
177C2	Party brute force, dfs and similar, dsu, graphs	1500	x1649
177C1	Party dfs and similar, dsu, graphs	1500	x1614
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x7424
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x7073
659E	New Reform data structures, dfs and similar, dsu, graphs, greedy	1600	x5637
722C	Destroying Array data structures, dsu	1600	x5629
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x5384
731C	Socks dfs and similar, dsu, graphs, greedy	1600	x5082
939D	Love Rescue dfs and similar, dsu, graphs, greedy, strings	1600	x5007
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x4175
28B	pSort dfs and similar, dsu, graphs	1600	x2581
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x9708
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x7938
1253D	Harmonious Graph constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	1700	x6172
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x5855
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x5583
1476D	Journey dfs and similar, dp, dsu, implementation	1700	x5574
1411C	Peaceful Rooks dfs and similar, dsu, graphs	1700	x5457
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x4424
1131F	Asya And Kittens constructive algorithms, dsu	1700	x4402
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x3282
670E	Correct Bracket Sequence Editor data structures, dsu, strings	1700	x2699
765D	Artsem and Saunders constructive algorithms, dsu, math	1700	x2191
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x3769
371D	Vessels data structures, dsu, implementation, trees	1800	x3661
1442B	Identify the Operations combinatorics, data structures, dsu, greedy, implementation	1800	x3081
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x2729
436C	Dungeons and Candies dsu, graphs, greedy, trees	1800	x2247
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2193
1468J	Road Reform dsu, graphs, greedy	1800	x2005
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x737
547B	Mike and Feet binary search, data structures, dp, dsu	1900	x5377
25D	Roads not only in Berland dsu, graphs, trees	1900	x5208
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x4398
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x3968
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x3320
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x3263
1095F	Make It Connected dsu, graphs, greedy	1900	x3253
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x2843
1482D	Playlist data structures, dsu, implementation, shortest paths	1900	x2483
437D	The Child and Zoo dsu, sortings	1900	x2479
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x2461
109C	Lucky Tree dp, dsu, trees	1900	x2121
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x2026
1133F2	Spanning Tree with One Fixed Degree constructive algorithms, dfs and similar, dsu, graphs, greedy	1900	x1940
566D	Restructuring Company data structures, dsu	1900	x1874
982D	Shark brute force, data structures, dsu, trees	1900	x1842
292D	Connected Components data structures, dfs and similar, dp, dsu	1900	x1729
228E	The Road to Berland is Paved With Good Intentions 2-sat, dfs and similar, dsu, graphs	1900	x1693
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x6449
1344B	Monopole Magnets constructive algorithms, dfs and similar, dsu, graphs	2000	x4754
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x3273
776D	The Door Problem 2-sat, dfs and similar, dsu, graphs	2000	x3212
468B	Two Sets 2-sat, dfs and similar, dsu, graph matchings, greedy	2000	x2914
1131D	Gourmet choice dfs and similar, dp, dsu, graphs, greedy	2000	x2358
766D	Mahmoud and a Dictionary data structures, dfs and similar, dp, dsu, graphs	2000	x2330
400D	Dima and Bacteria dsu, graphs, shortest paths	2000	x2211
1209G1	Into Blocks (easy version) data structures, dsu, greedy, implementation, two pointers	2000	x2051
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x1759
659F	Polycarp and Hay dfs and similar, dsu, graphs, greedy, sortings	2000	x1431
187C	Weak Memory dfs and similar, dsu	2000	x1024
366D	Dima and Trap Graph binary search, data structures, dfs and similar, dsu, shortest paths, two pointers	2000	x977
433D	Nanami's Digital Board dsu, implementation	2000	x936
195E	Building Forest data structures, dsu, graphs	2000	x582
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x3801
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x3427
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x3013
1278D	Segment Tree data structures, dsu, graphs, trees	2100	x2666
1466F	Euclid's nightmare bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings	2100	x2317
788B	Weird journey combinatorics, constructive algorithms, dfs and similar, dsu, graphs	2100	x1851
1213F	Unstable String Sort data structures, dfs and similar, dsu, graphs, greedy, implementation, strings	2100	x1640

←