Problemset - Codeforces

→ Pay attention

Contest is running
Educational Codeforces Round 173 (Rated for Div. 2)
00:15:13
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
704D	Captain America flows, greedy	3100	x805
704C	Black Widow dp, graphs, implementation, math	2900	x467
704B	Ant Man dp, graphs, greedy	2500	x1894
704A	Thor brute force, data structures, implementation	1600	x9395
703E	Mishka and Divisors dp, number theory	2600	x604
703D	Mishka and Interesting sum data structures	2100	x3656
703C	Chris and Road geometry, implementation	2100	x1863
703B	Mishka and trip implementation, math	1400	x5705
703A	Mishka and Game implementation	800	x57749
702F	T-Shirts data structures	2800	x1507
702E	Analysis of Pathes in Functional Graph data structures, graphs	2100	x2634
702D	Road to Post Office math	1900	x3387
702C	Cellular Network binary search, implementation, two pointers	1500	x16058
702B	Powers of Two brute force, data structures, implementation, math	1500	x12139
702A	Maximum Increase dp, greedy, implementation	800	x46094
701C	They Are Everywhere binary search, strings, two pointers	1500	x15529
701B	Cells Not Under Attack data structures, math	1200	x11820
701A	Cards greedy, implementation	800	x19768
700E	Cool Slogans string suffix structures, strings	3300	x1195
700D	Huffman Coding on Segment data structures, greedy	3100	x464
700C	Break Up dfs and similar, graphs	2600	x1317
700B	Connecting Universities dfs and similar, dp, graphs, trees	1800	x4082
700A	As Fast As Possible binary search, math	1900	x3201
699B	One Bomb implementation	1400	x7622
699A	Launch of Collider implementation	1000	x16140
698F	Coprime Permutation combinatorics, number theory	3000	x438
698E	Cron	2800	x118
698D	Limak and Shooting Points brute force, geometry, math	2600	x545
698C	LRU bitmasks, dp, math, probabilities	2400	x1335
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5798
698A	Vacations dp	1400	x31053
697B	Barnicle brute force, implementation, math, strings	1400	x5767
697A	Pineapple Incident implementation, math	900	x12859
696F	...Dary! binary search, geometry, two pointers	3300	x125
696E	...Wait for it... data structures, dsu, trees	3000	x564
696D	Legen... data structures, dp, matrices, strings	2500	x1332
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2091
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3529
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x6135
691F	Couple Cover brute force, dp, number theory	2200	x1316
691E	Xor-sequences matrices	1900	x2587
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5578
691C	Exponential notation implementation, strings	1800	x2625
691B	s-palindrome implementation, strings	1600	x7467
691A	Fashion in Berland implementation	1000	x10273
690F3	Tree of Life (hard) trees	3200	x54
690F2	Tree of Life (medium) constructive algorithms, hashing, trees	2700	x85
690F1	Tree of Life (easy)	1300	x2177
690E2	Photographs (II)	2600	x143
690E1	Photographs (I)	1800	x680
690D3	The Wall (hard) dp	2100	x525
690D2	The Wall (medium) combinatorics	1800	x1251
690D1	The Wall (easy)	1200	x2635
690C3	Brain Network (hard) trees	2200	x916
690C2	Brain Network (medium) dfs and similar, graphs, trees	1500	x3852
690C1	Brain Network (easy)	1300	x2804
690B3	Recover Polygon (hard) data structures	2600	x93
690B2	Recover Polygon (medium) geometry	2600	x205
690B1	Recover Polygon (easy)	1700	x943
690A3	Collective Mindsets (hard)	2400	x553
690A2	Collective Mindsets (medium)	2300	x710
690A1	Collective Mindsets (easy)	1100	x2882
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2000	x1957
689D	Friends and Subsequences binary search, data structures	2100	x3511
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x5439
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x6069
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5279
688B	Lovely Palindromes constructive algorithms, math	1000	x32672
688A	Opponents implementation	800	x14050
687E	TOF dfs and similar, graphs	2900	x323
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x964
687C	The Values You Can Make dp	1900	x5761
687B	Remainders Game chinese remainder theorem, math, number theory	1800	x5972
687A	NP-Hard Problem dfs and similar, graphs	1500	x14565
686B	Little Robber Girl's Zoo constructive algorithms, implementation, sortings	1100	x7818
686A	Free Ice Cream constructive algorithms, implementation	800	x38267
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x560
685D	Kay and Eternity brute force, implementation, sortings	2600	x487
685C	Optimal Point binary search, math	2900	x588
685B	Kay and Snowflake data structures, dfs and similar, dp, trees	1900	x4261
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4289
683J	The Hero with Bombs *special problem	3000	x41
683I	Loader *special problem, graphs	2500	x41
683H	Exchange of Books *special problem	1900	x100
683G	The Fraction *special problem	1900	x134
683F	Reformat the String *special problem	1800	x151
683E	Hammer throwing *special problem	1800	x193
683D	Chocolate Bar *special problem, math	1400	x329
683C	Symmetric Difference *special problem	1600	x326
683B	The Teacher of Physical Education *special problem	1600	x321
683A	The Check of the Point *special problem, geometry	1200	x808
682E	Alyona and Triangles geometry, two pointers	2600	x669
682D	Alyona and Strings dp, strings	1900	x3338
682C	Alyona and the Tree dfs and similar, dp, graphs, trees	1600	x7321
682B	Alyona and Mex sortings	1200	x11611
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x22005
681E	Runaway to a Shadow geometry, sortings	2500	x473
681D	Gifts by the List constructive algorithms, dfs and similar, graphs, trees	2000	x1792
681C	Heap Operations constructive algorithms, data structures, greedy	1600	x7935
681B	Economy Game brute force	1300	x9019