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Problemset

2,107 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
2250B	String Construction constructive algorithms	unrated	10.4k
2249D	Xor Permutation Matrix bitmasks constructive algorithms math	unrated	672
2249F	Even Simple Path constructive algorithms graphs shortest paths	unrated	50
2247A	Zero Sum constructive algorithms dp number theory	unrated	17.7k
2247B	Yet Another Constructive constructive algorithms	unrated	13.5k
2247E	Build a Tree constructive algorithms trees two pointers	unrated	864
2246A	farmpiggie and Subset Sum constructive algorithms	unrated	17.7k
2246B	ezraft and Array constructive algorithms number theory	unrated	15.2k
2246F	Whoname and Unsorted Array constructive algorithms	unrated	201
2245C	MEXOR bitmasks constructive algorithms math	unrated	6k
2245D2	Construct an Array (Hard Version) 2-sat constructive algorithms dfs and similar graphs implementation	unrated	1.7k
2244C	Stepan and Permutation constructive algorithms dfs and similar dsu greedy math number theory sortings	unrated	15.6k
2244D	Yaroslav and Productivity constructive algorithms dp greedy math number theory	unrated	11.4k
2242E	Product of Closures bitmasks brute force constructive algorithms greedy implementation math number theory	2200	1.4k
2241B	Good times Good times constructive algorithms dfs and similar math	1100	19.7k
2239A	Nim Game Is XOR Game constructive algorithms games greedy math	1300	8.7k
2237D	Fullmetal Bitchemist constructive algorithms greedy math	1500	6.2k
2237G	Send GCDs communication constructive algorithms interactive math number theory	2900	416
2236D	Brand New Tatar TV Show binary search constructive algorithms dp games math	1300	12.5k
2234B	Palindrome, Twelve and Two Terms brute force constructive algorithms math	800	21.8k
2233B	Different Distances constructive algorithms	900	17.6k
2232D	Magical Tiered Cake constructive algorithms dfs and similar dp greedy	2000	2.7k
2232E	Snaking Arrangement combinatorics constructive algorithms	2600	587
2231A	Construct an Array constructive algorithms	800	25.1k
2231B	Another Sorting Problem constructive algorithms	1100	17.9k
2231D	Maximum Prefix Sums constructive algorithms greedy implementation two pointers	1900	3.7k
2231F	Quadratic Jumps brute force constructive algorithms greedy math number theory	2600	787
2230C	Arrange the Numbers in a Circle constructive algorithms implementation math	1300	11.4k
2229C1	We Be Flipping (Easy Version) constructive algorithms greedy	900	15.6k
2229C2	We Be Flipping (Hard Version) constructive algorithms dp greedy	1400	8.6k
2227C	Snowfall constructive algorithms math	800	22.7k
2227D	Palindromex binary search brute force constructive algorithms data structures greedy implementation two pointers	1200	13.9k
2226D	Reserved Reversals constructive algorithms dp greedy math	1900	3.2k
2225E	Covering Points with Circles constructive algorithms geometry math	2200	1.3k
2224A	Zhily and Array Operating constructive algorithms greedy	800	11.8k
2224B	Zhily and Mex and Max constructive algorithms greedy math sortings	1200	9k
2223A	Zhily and Bracket Swapping constructive algorithms greedy	1300	7.8k
2222D	Permutation Construction constructive algorithms data structures sortings	1800	4k
2222E	Seek the Truth binary search bitmasks constructive algorithms interactive	2000	2.3k
2219A	Grid L brute force constructive algorithms math number theory	1400	10.7k
2219B1	Unique Values (Easy version) binary search constructive algorithms divide and conquer interactive math	1900	4.2k
2219B2	Unique Values (Hard version) binary search bitmasks constructive algorithms interactive	2000	3.8k
2219E	Weird Chessboard constructive algorithms math	3500	154
2218C	The 67th Permutation Problem constructive algorithms greedy math	800	30.8k
2218D	The 67th OEIS Problem constructive algorithms greedy math number theory	1100	21.6k
2218F	The 67th Tree Problem constructive algorithms implementation trees	1500	9k
2217E	Definitely Larger binary search constructive algorithms data structures graphs greedy sortings	2000	2.5k
2217F	Interval Game bitmasks combinatorics constructive algorithms dp games greedy math probabilities	2300	885
2215A	Interval Mod constructive algorithms dp greedy math	1700	3.7k
2215C	Oriented Journey bitmasks brute force communication constructive algorithms graphs interactive trees	2200	819
2215E	Star Map constructive algorithms data structures geometry greedy sortings	2700	217
2211B	Mickey Mouse Constructive constructive algorithms dp greedy math	1100	12.9k
2211C2	Equal Multisets (Hard Version) constructive algorithms dsu greedy	1800	4.2k
2211G	Rational Bubble Sort constructive algorithms geometry greedy	2900	332
2210A	A Simple Sequence constructive algorithms dp greedy number theory	800	24.5k
2210D	A Simple RBS Problem constructive algorithms math strings trees	2100	2.3k
2210E	Binary Strings are Simple? constructive algorithms implementation interactive number theory	2700	369
2209C	Find the Zero constructive algorithms interactive	1400	11.8k
2209D	Ghostfires constructive algorithms greedy	1800	5.9k
2208A	Bingo Candies constructive algorithms math	800	21.9k
2208D1	Tree Orientation (Easy Version) constructive algorithms dfs and similar dsu graphs greedy matrices trees	1800	4.8k
2207E1	N-MEX (Constructive Version) constructive algorithms greedy	2100	1.8k
2207E2	N-MEX (Counting Version) combinatorics constructive algorithms math	2400	964
2207G	Toothless constructive algorithms dfs and similar dsu	3300	185
2207H1	Bowser's Castle (Easy Version) binary search constructive algorithms divide and conquer greedy interactive trees	unrated	60
2207H2	Bowser's Castle (Medium Version) constructive algorithms divide and conquer interactive trees two pointers	unrated	51
2207H3	Bowser's Castle (Hard Version) constructive algorithms divide and conquer interactive trees two pointers	unrated	69
2205A	Simons and Making It Beautiful brute force constructive algorithms	800	18.5k
2205F	Simons and Reconstructing His Roads constructive algorithms data structures dsu graphs	2400	714
2204D	Alternating Path constructive algorithms dfs and similar graph matchings graphs	1400	10k
2204E	Sum of Digits (and Again) brute force constructive algorithms math	1800	5.2k
2201B	Recollect Numbers constructive algorithms	1700	5.4k
2201F2	Monotone Monochrome Matrices (Hard Version) constructive algorithms data structures hashing math	2800	461
2201G	Codeforces Heuristic Contest 1001 constructive algorithms	3500	75
2199C	Minesweeper *special constructive algorithms greedy	1600	524
2196F	Indivisible brute force constructive algorithms graphs	3300	118
2195H	Codeforces Heuristic Contest 001 brute force constructive algorithms geometry implementation	2400	509
2194D	Table Cut constructive algorithms greedy implementation	1600	8.6k
2192B	Flipping Binary String constructive algorithms strings	1000	15.9k
2192E	Swap to Rearrange constructive algorithms dfs and similar graph matchings graphs greedy strings	2100	2.3k
2191A	Array Coloring constructive algorithms	800	28.7k
2191B	MEX Reordering constructive algorithms sortings	1000	20.9k
2190A	Sorting Game constructive algorithms games greedy	1200	18.2k
2190B1	Sub-RBS (Easy Version) combinatorics constructive algorithms dp greedy strings two pointers	1400	11.5k
2189B	The Curse of the Frog constructive algorithms greedy math	1200	16.2k
2189C1	XOR Convenience (Easy Version) bitmasks constructive algorithms math	1300	14.7k
2189C2	XOR-convenience (Hard Version) bitmasks constructive algorithms math	1800	6.5k
2189E	Majority Wins? constructive algorithms greedy math strings	2600	882
2188A	Divisible Permutation constructive algorithms	800	26.7k
2187B	Shortest Statement Ever bitmasks constructive algorithms dp greedy	1800	5.6k
2185A	Perfect Root constructive algorithms math	800	45.6k
2183B	Yet Another MEX Problem constructive algorithms greedy	1100	16.7k
2183D1	Tree Coloring (Easy Version) constructive algorithms dfs and similar greedy trees	1500	9.3k
2183D2	Tree Coloring (Hard Version) combinatorics constructive algorithms data structures dfs and similar greedy implementation trees	2100	2.6k
2183G	Snake Instructions constructive algorithms greedy interactive	3200	243
2183I1	Pairs Flipping (Easy Version) constructive algorithms	3500	95
2183I2	Pairs Flipping (Hard Version) constructive algorithms	3500	82
2182A	New Year String constructive algorithms greedy implementation strings	800	26.2k
2181C	Cacti Classification binary search constructive algorithms interactive math	3200	167
2181E	Elevator Against Humanity brute force constructive algorithms greedy sortings	2900	160

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