dfs and similar - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	9934	P1835F Good Graph bitmasks dfs and similar graph matchings graphs implementation *3500	0 / 0	10
	9862	P1839E Decreasing Game constructive algorithms dfs and similar dp greedy interactive *2400	0 / 0	9
	9856	P1840F Railguns brute force dfs and similar dp graphs *2200	0 / 0	8
	9926	P1842F Tenzing and Tree dfs and similar greedy shortest paths sortings trees *2500	0 / 0	9
	9919	P1843D Apple Tree combinatorics dfs and similar dp math trees *1200	0 / 0	4
	9917	P1843F1 Omsk Metro (simple version) data structures dfs and similar dp graphs greedy math trees *1800	0 / 0	6
	9916	P1843F2 Omsk Metro (hard version) data structures dfs and similar divide and conquer dp math trees *2300	0 / 0	8
	9911	P1844E Great Grids 2-sat constructive algorithms dfs and similar dsu graphs *2400	0 / 0	9
	9908	P1844G Tree Weights bitmasks constructive algorithms data structures dfs and similar implementation math matrices number theory trees *3000	0 / 0	10
	9887	P1847F The Boss's Identity binary search bitmasks data structures dfs and similar greedy math sortings *2500	0 / 0	9
	9873	P1850H The Third Letter dfs and similar graphs greedy implementation	0 / 0	(None)
	9952	P1851E Nastya and Potions dfs and similar dp graphs sortings	0 / 0	(None)
	9990	P1856E1 PermuTree (easy version) dfs and similar dp trees *1800	0 / 0	6
	9989	P1856E2 PermuTree (hard version) bitmasks dfs and similar dp fft greedy implementation math trees *2700	0 / 0	10
	9977	P1858E1 Rollbacks (Easy Version) brute force data structures dfs and similar trees *2500	0 / 0	9
	9970	P1859F Teleportation in Byteland data structures dfs and similar divide and conquer graphs shortest paths trees *3200	0 / 0	10
	9965	P1860E Fast Travel Text Editor data structures dfs and similar graphs shortest paths	0 / 0	(None)
	10045	P1861C Queries for the Array data structures dfs and similar implementation strings trees	9 / 31	7
	10030	P1863E Speedrun brute force dfs and similar dp graphs greedy math sortings two pointers	0 / 0	(None)
	10014	P1866C Completely Searching for Inversions dfs and similar dp graphs	0 / 0	(None)
	10067	P1867D Cyclic Operations brute force constructive algorithms dfs and similar graphs greedy implementation	0 / 0	(None)
	10064	P1867F Most Different Tree brute force constructive algorithms dfs and similar greedy hashing	0 / 0	(None)
	10049	P1872F Selling a Menagerie dfs and similar dsu graphs implementation math	0 / 0	(None)
	10115	P1873H Mad City dfs and similar dsu games graphs shortest paths trees *1700	0 / 0	5
	10113	P1874B Jellyfish and Math bitmasks brute force dfs and similar dp graphs shortest paths	0 / 0	(None)
	10102	P1876C Autosynthesis constructive algorithms dfs and similar dp graphs trees	0 / 0	(None)
	10101	P1876D Lexichromatography combinatorics dfs and similar dsu graphs two pointers	0 / 0	(None)
	10089	P1878G wxhtzdy ORO Tree binary search bitmasks brute force data structures dfs and similar implementation trees	0 / 0	(None)
	10084	P1879E Interactive Game with Coloring brute force constructive algorithms dfs and similar graphs implementation interactive trees *2400	0 / 0	9
	10165	P1881F Minimum Maximum Distance dfs and similar dp graphs shortest paths trees	0 / 0	(None)
	10079	P1882D Tree XOR bitmasks dfs and similar dp greedy trees	0 / 0	(None)
	10141	P1889D Game of Stacks brute force dfs and similar graphs implementation trees	0 / 0	(None)
	10140	P1889E Doremy's Swapping Trees dfs and similar graphs trees	0 / 0	(None)
	10131	P1891F A Growing Tree data structures dfs and similar trees	0 / 0	(None)
	10184	P1893A Anonymous Informant brute force dfs and similar graphs implementation *1400	0 / 0	4
	10180	P1893E Cacti Symphony combinatorics dfs and similar dp graphs *3500	0 / 0	10
	10173	P1895E Infinite Card Game binary search brute force data structures dfs and similar dp dsu games graphs greedy sortings two pointers *2300	0 / 0	8
	10204	P1898F Vova Escapes the Matrix brute force dfs and similar divide and conquer shortest paths *2600	0 / 0	10
	10197	P1899G Unusual Entertainment data structures dfs and similar dsu shortest paths sortings trees two pointers *1900	0 / 0	6
	10194	P1900C Anji's Binary Tree dfs and similar dp shortest paths trees *1300	0 / 0	4
	10192	P1900E Transitive Graph dfs and similar dp dsu graphs implementation *2100	0 / 0	7
	10186	P1901E Compressed Tree dfs and similar dp graphs greedy sortings trees *2200	0 / 0	8
	10317	P1907G Lights brute force constructive algorithms dfs and similar graphs greedy implementation *2200	0 / 0	8
	10227	P1914F Programming Competition dfs and similar dp graph matchings greedy trees *1900	0 / 0	6
	10226	P1914G1 Light Bulbs (Easy Version) brute force combinatorics dfs and similar dp dsu graphs math trees *2100	0 / 0	7
	10225	P1914G2 Light Bulbs (Hard Version) combinatorics data structures dfs and similar dp graphs hashing *2300	0 / 0	8
	10282	P1916E Happy Life in University data structures dfs and similar greedy trees *2300	0 / 0	8
	10281	P1916F Group Division constructive algorithms dfs and similar graphs greedy *2900	0 / 0	10
	10342	P1918F Caterpillar on a Tree dfs and similar graphs greedy implementation sortings trees *2500	0 / 0	9
	10263	P1920F1 Smooth Sailing (Easy Version) binary search brute force data structures dfs and similar dsu graphs shortest paths *2500	0 / 0	9
	10326	P1927F Microcycle data structures dfs and similar dsu graphs greedy implementation sortings trees	0 / 0	(None)
	10435	P1929E Sasha and the Happy Tree Cutting bitmasks brute force dfs and similar dp graphs greedy math trees *2300	0 / 0	8
	10434	P1929F Sasha and the Wedding Binary Search Tree brute force combinatorics data structures dfs and similar math trees *2300	0 / 0	8
	10427	P1930F Maximize the Difference bitmasks brute force dfs and similar *2700	0 / 0	10
	10425	P1930H Interactive Mex Tree constructive algorithms dfs and similar interactive trees *3300	0 / 0	10
	10418	P1931F Chat Screenshots combinatorics dfs and similar graphs *1700	0 / 0	5
	10404	P1933F Turtle Mission: Robot and the Earthquake dfs and similar dp graphs shortest paths *2100	0 / 0	7
	10403	P1933G Turtle Magic: Royal Turtle Shell Pattern bitmasks brute force combinatorics constructive algorithms dfs and similar math *2300	0 / 0	8
	10391	P1935F Andrey's Tree binary search constructive algorithms data structures dfs and similar dsu greedy implementation trees *2800	0 / 0	10
	10358	P1941D Rudolf and the Ball Game dfs and similar dp implementation *1200	0 / 0	4
	10355	P1941G Rudolf and Subway constructive algorithms dfs and similar graphs shortest paths *2000	0 / 0	7
	10526	P1942D Learning to Paint binary search data structures dfs and similar dp greedy implementation sortings	0 / 0	(None)
	10472	P1943C Tree Compass constructive algorithms dfs and similar greedy trees *2300	0 / 0	8
	10352	P1948C Arrow Path dfs and similar dp graphs shortest paths shortest paths	0 / 0	(None)
	10450	P1949A Grove brute force dfs and similar dp geometry probabilities	0 / 0	(None)
	10448	P1949C Annual Ants' Gathering dfs and similar greedy trees	0 / 0	(None)
	10442	P1949I Disks dfs and similar geometry graph matchings graphs	0 / 0	(None)
	10515	P1950G Shuffling Songs bitmasks dfs and similar dp graphs hashing implementation strings	0 / 0	(None)
	10499	P1952G Mathematician Takeover binary search dfs and similar math	0 / 0	(None)
	10483	P1955G GCD on a grid brute force dfs and similar dp implementation math number theory	0 / 0	(None)
	10618	P1967D Long Way to be Non-decreasing binary search dfs and similar graphs implementation shortest paths two pointers *2800	0 / 0	10
	10611	P1968D Permutation Game brute force dfs and similar games graphs greedy math *1300	0 / 0	4
	10593	P1970C2 Game on Tree (Medium) dfs and similar dp games trees *1700	0 / 0	5
	10592	P1970C3 Game on Tree (Hard) dfs and similar dp games trees *1900	0 / 0	6
	10582	P1970G1 Min-Fund Prison (Easy) dfs and similar trees *1900	0 / 0	6
	10581	P1970G2 Min-Fund Prison (Medium) brute force dfs and similar dp graphs trees *2200	0 / 0	8
	10580	P1970G3 Min-Fund Prison (Hard) bitmasks dfs and similar dp graphs trees *2400	0 / 0	9
	10574	P1971F Circle Perimeter binary search brute force dfs and similar geometry implementation math *1600	0 / 0	5
	10572	P1971H ±1 2-sat dfs and similar graphs *2100	0 / 0	7
	10553	P1975D Paint the Tree brute force dfs and similar dp greedy shortest paths trees *1700	0 / 0	5
	10552	P1975E Chain Queries binary search data structures dfs and similar implementation trees *2100	0 / 0	7
	10551	P1975F Set bitmasks brute force combinatorics dfs and similar divide and conquer dp math *2600	0 / 0	10
	10543	P1976E Splittable Permutations combinatorics data structures dfs and similar greedy math trees	0 / 0	(None)
	10542	P1976F Remove Bridges data structures dfs and similar dp greedy sortings trees	0 / 0	(None)
	10693	P1978F Large Graph data structures dfs and similar dsu graphs number theory two pointers *2400	0 / 0	9
	10679	P1980G Yasya and the Mysterious Tree bitmasks data structures dfs and similar graphs greedy strings trees *2300	0 / 0	8
	10533	P1981D Turtle and Multiplication constructive algorithms dfs and similar graphs math number theory	0 / 0	(None)
	10656	P1985H1 Maximize the Largest Component (Easy Version) brute force data structures dfs and similar dsu graphs implementation *1700	0 / 0	5
	10655	P1985H2 Maximize the Largest Component (Hard Version) data structures dfs and similar dp dsu implementation *2200	0 / 0	8
	10649	P1986F Non-academic Problem dfs and similar graphs trees *1900	0 / 0	6
	10642	P1987E Wonderful Tree! brute force data structures dfs and similar dsu greedy trees *2000	0 / 0	7
	10752	P1988D The Omnipotent Monster Killer brute force dfs and similar dp trees *2000	0 / 0	7
	10631	P1989F Simultaneous Coloring dfs and similar divide and conquer graphs *3000	0 / 0	10
	10745	P1990E1 Catch the Mole(Easy Version) binary search data structures dfs and similar interactive trees *2500	0 / 0	9
	10744	P1990E2 Catch the Mole(Hard Version) binary search data structures dfs and similar divide and conquer interactive trees *2600	0 / 0	10
	10738	P1991E Coloring Game constructive algorithms dfs and similar games graphs greedy interactive	0 / 0	(None)
	10721	P1994F Stardew Valley constructive algorithms dfs and similar graphs trees *2500	0 / 0	9
	10701	P1997D Maximize the Root binary search dfs and similar dp greedy trees	0 / 0	(None)

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