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Problemset

11,320 problems

#	Name	Rating↕	Solved↕
1921D	Very Different Array data structures greedy sortings two pointers	1100	24.7k
1921E	Eat the Chip brute force games greedy math	1600	11.6k
1921F	Sum of Progression brute force data structures dp implementation math	1900	5.2k
1921G	Mischievous Shooter brute force data structures divide and conquer dp implementation	2200	1.5k
1920A	Satisfying Constraints brute force greedy math	800	29.8k
1920B	Summation Game games greedy math sortings	1100	23.4k
1920C	Partitioning the Array brute force math number theory	1600	21k
1920D	Array Repetition binary search brute force dsu implementation math	1900	6.7k
1920E	Counting Binary Strings combinatorics dp math	2100	3.5k
1920F1	Smooth Sailing (Easy Version) binary search brute force data structures dfs and similar dsu graphs shortest paths	2500	1.3k
1920F2	Smooth Sailing (Hard Version) binary search data structures dsu geometry graphs trees	3000	669
1919A	Wallet Exchange games math	800	36.4k
1919B	Plus-Minus Split greedy	800	31.8k
1919C	Grouping Increases data structures dp greedy	1400	30.3k
1919D	01 Tree constructive algorithms data structures dsu greedy sortings trees	2100	4.6k
1919E	Counting Prefixes combinatorics constructive algorithms dp implementation math	2600	1.2k
1919F1	Wine Factory (Easy Version) data structures greedy	2300	2.6k
1919F2	Wine Factory (Hard Version) data structures dp flows greedy matrices	2800	1.2k
1919G	Tree LGM constructive algorithms divide and conquer games trees	3500	219
1919H	Tree Diameter interactive trees	2000	185
1918A	Brick Wall constructive algorithms greedy implementation math	800	32.6k
1918B	Minimize Inversions constructive algorithms data structures greedy implementation sortings	900	27.5k
1918C	XOR-distance bitmasks greedy implementation math	1400	17.1k
1918D	Blocking Elements binary search data structures dp implementation two pointers	1900	6.4k
1918E	ace5 and Task Order constructive algorithms divide and conquer implementation interactive probabilities sortings	2200	2.1k
1918F	Caterpillar on a Tree dfs and similar graphs greedy implementation sortings trees	2500	1.2k
1918G	Permutation of Given constructive algorithms math	2700	706
1917A	Least Product constructive algorithms math	800	27.4k
1917B	Erase First or Second Letter brute force combinatorics data structures dp strings	1100	38.8k
1917C	Watering an Array brute force greedy implementation math	1600	12.6k
1917D	Yet Another Inversions Problem combinatorics data structures dp implementation math number theory	2300	2.1k
1917E	Construct Matrix constructive algorithms math	2500	1.7k
1917F	Construct Tree bitmasks constructive algorithms dp trees	2500	1.3k
1916A	2023 constructive algorithms implementation math number theory	800	28.5k
1916B	Two Divisors constructive algorithms math number theory	1000	32.8k
1916C	Training Before the Olympiad constructive algorithms games greedy implementation math	1200	20.1k
1916D	Mathematical Problem brute force constructive algorithms geometry math	1700	9.9k
1916E	Happy Life in University data structures dfs and similar greedy trees	2300	2.7k
1916F	Group Division constructive algorithms dfs and similar graphs greedy	2900	757
1916G	Optimizations From Chelsu divide and conquer dp number theory trees	3500	239
1916H1	Matrix Rank (Easy Version) brute force combinatorics dp math matrices	2700	751
1916H2	Matrix Rank (Hard Version) combinatorics dp math matrices string suffix structures	2700	681
1915A	Odd One Out bitmasks implementation	800	82.1k
1915B	Not Quite Latin Square bitmasks brute force implementation	800	51.3k
1915C	Can I Square? binary search implementation	800	55.7k
1915D	Unnatural Language Processing greedy implementation strings	900	35.6k
1915E	Romantic Glasses data structures greedy math	1300	36.8k
1915F	Greetings data structures divide and conquer sortings	1500	23.5k
1915G	Bicycles graphs greedy implementation shortest paths sortings	1800	10.3k
1914A	Problemsolving Log implementation strings	800	35.5k
1914B	Preparing for the Contest constructive algorithms math	800	33.5k
1914C	Quests greedy math	1100	42.3k
1914D	Three Activities brute force dp greedy implementation sortings	1200	40.8k
1914E1	Game with Marbles (Easy Version) brute force games greedy sortings	1400	14.5k
1914E2	Game with Marbles (Hard Version) games greedy sortings	1400	15k
1914F	Programming Competition dfs and similar dp graph matchings greedy trees	1900	5.1k
1914G1	Light Bulbs (Easy Version) brute force combinatorics dfs and similar dp dsu graphs math trees	2100	2.5k
1914G2	Light Bulbs (Hard Version) combinatorics data structures dfs and similar dp graphs hashing	2300	1.9k
1913A	Rating Increase implementation	800	27.6k
1913B	Swap and Delete strings	1000	55.4k
1913C	Game with Multiset binary search bitmasks brute force greedy	1300	17.8k
1913D	Array Collapse data structures divide and conquer dp trees	2100	4.3k
1913E	Matrix Problem flows graphs	2400	1.4k
1913F	Palindromic Problem binary search data structures hashing string suffix structures strings	2800	583
1912A	Accumulator Apex data structures implementation sortings	1900	3.1k
1912B	Blueprint for Seating combinatorics divide and conquer math	2100	1.5k
1912C	Cactus Transformation constructive algorithms	3300	74
1912D	Divisibility Test math	1900	2k
1912E	Evaluate It and Back Again constructive algorithms implementation math	2200	1.3k
1912F	Fugitive Frenzy math probabilities	3100	144
1912G	Great City Saint Petersburg data structures	2400	589
1912H	Hypercatapult Commute graphs	2400	611
1912I	Innovative Washing Machine geometry math two pointers	3300	66
1912J	Joy of Pokémon Observation	2300	741
1912K	Kim's Quest bitmasks combinatorics dp	1800	4.4k
1912L	LOL Lovers strings	800	8.8k
1910A	Username *special implementation	1100	2k
1910B	Security Guard *special greedy	1600	810
1910C	Poisonous Swamp *special implementation	1600	745
1910D	Remove and Add *special greedy	1800	413
1910E	Maximum Sum Subarrays *special dp	2100	248
1910F	Build Railway Stations *special greedy trees	2000	227
1910G	Pool Records *special greedy	2700	79
1910H	Sum of Digits of Sums *special binary search data structures	2400	113
1910I	Inverse Problem *special combinatorics dp	2700	70
1910J	Two Colors *special	2900	61
1909A	Distinct Buttons implementation math	800	19.1k
1909B	Make Almost Equal With Mod bitmasks constructive algorithms math number theory	1200	33.4k
1909C	Heavy Intervals constructive algorithms data structures dsu greedy math sortings	1400	13.4k
1909D	Split Plus K greedy math number theory	1900	5.2k
1909E	Multiple Lamps bitmasks brute force constructive algorithms math number theory	2400	1.7k
1909F1	Small Permutation Problem (Easy Version) brute force combinatorics dp math	2200	2.3k
1909F2	Small Permutation Problem (Hard Version) combinatorics dp math	2500	1.3k
1909G	Pumping Lemma hashing strings	3000	694
1909H	Parallel Swaps Sort constructive algorithms data structures	3500	115
1909I	Short Permutation Problem combinatorics dp fft math	1900	183
1907A	Rook implementation	800	42.2k
1907B	YetnotherrokenKeoard data structures implementation strings	1000	31k
1907C	Removal of Unattractive Pairs constructive algorithms greedy math strings	1200	23.5k
1907D	Jumping Through Segments binary search constructive algorithms	1400	25.2k

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