Problemset - Codeforces

→ Pay attention

Before contest
Pinely Round 4 (Div. 1 + Div. 2)
14:17:31
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11301
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x7009
1873G	ABBC or BACB constructive algorithms, greedy	1500	x12607
1873F	Money Trees binary search, greedy, math, two pointers	1300	x14787
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6080
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12871
1870D	Prefix Purchase greedy, implementation, sortings	1800	x6667
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11168
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6765
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x11668
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5594
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x10959
1866C	Completely Searching for Inversions dfs and similar, dp, graphs	1900	x2979
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7519
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6555
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13113
1863D	Two-Colored Dominoes constructive algorithms, greedy	1400	x9267
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6013
1862E	Kolya and Movie Theatre constructive algorithms, data structures, greedy	1600	x10302
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16695
1861D	Sorting By Multiplication dp, greedy	1800	x6532
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x9823
1860C	Game on Permutation data structures, dp, games, greedy	1400	x12967
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6802
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x11052
1857F	Sum and Product binary search, data structures, math	1600	x11008
1857E	Power of Points math, sortings	1500	x12022
1857D	Strong Vertices math, sortings, trees	1300	x18687
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x5132
1856C	To Become Max binary search, brute force, data structures, dp	1600	x11782
1854A2	Dual (Hard Version) constructive algorithms, math	1900	x6849
1854A1	Dual (Easy Version) constructive algorithms, math	1400	x13765
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4313
1852A	Ntarsis' Set binary search, math, number theory	1800	x7825
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5604
1851E	Nastya and Potions dfs and similar, dp, graphs, sortings	1500	x9920
1851D	Prefix Permutation Sums implementation, math	1300	x14846
1850H	The Third Letter dfs and similar, dsu, graphs, greedy, implementation	1700	x7899
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x11863
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x18239
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x8200
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x10221
1848C	Vika and Price Tags math, number theory	1800	x6158
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3682
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12584
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4248
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3005
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x6831
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x16189
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7597
1845C	Strong Password binary search, dp, greedy, strings	1400	x13855
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x12053
1844C	Particles dp, greedy, implementation, math	1300	x15297
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5169
1843E	Tracking Segments binary search, brute force, data structures, two pointers	1600	x11696
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x4015
1842C	Tenzing and Balls dp	1500	x12278
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7634
1840E	Character Blocking data structures, hashing, implementation	1600	x7831
1840D	Wooden Toy Festival binary search, greedy, sortings	1400	x13404
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11702
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x14028
1837D	Bracket Coloring constructive algorithms, greedy	1400	x14151
1835A	k-th equality brute force, implementation, math	1700	x7652
1834D	Survey in Class brute force, data structures, greedy, implementation, sortings	1900	x4519
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5197
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x7083
1833E	Round Dance dfs and similar, dsu, graphs, shortest paths	1600	x11220
1833D	Flipper brute force, constructive algorithms, greedy	1400	x13081
1830A	Copil Copac Draws Trees dfs and similar, dp, graphs, trees	1400	x13063
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7464
1829G	Hits Different data structures, dp, implementation, math	1600	x9969
1829F	Forever Winter dfs and similar, graphs, math	1300	x16941
1826D	Running Miles brute force, dp, greedy	1700	x9210
1826C	Dreaming of Freedom greedy, math, number theory	1300	x13224
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4457
1824A	LuoTianyi and the Show greedy, implementation	1400	x11075
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3753
1823C	Strongly Composite greedy, math, number theory	1300	x12032
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6848
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x5870
1822E	Making Anti-Palindromes greedy, math, strings	1600	x10171
1821D	Black Cells binary search, brute force, greedy, math	1900	x4880
1821C	Tear It Apart brute force, implementation, math, strings	1300	x14001
1819B	The Butcher geometry, greedy, implementation, sortings, two pointers	1900	x3508
1819A	Constructive Problem brute force, greedy	1300	x12412
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x4011
1817A	Almost Increasing Subsequence binary search, data structures, greedy	1500	x10749
1815A	Ian and Array Sorting greedy, math	1300	x13802
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10554
1814B	Long Legs brute force, math	1700	x9809
1811E	Living Sequence binary search, dp, math, number theory	1500	x11988
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7291
1810D	Climbing the Tree binary search, math	1700	x7306
1810C	Make It Permutation brute force, greedy, sortings	1300	x14230
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6137
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12418
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3701
1807F	Bouncy Ball brute force, dfs and similar, implementation	1700	x6087
1807E	Interview binary search, implementation, interactive	1300	x12332