two pointers - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	9744	P6C Alice, Bob and Chocolate greedy two pointers *1200	0 / 0	4
	9742	P6E Exposition binary search data structures dsu trees two pointers *1900	0 / 0	6
	9703	P14D Two Paths dfs and similar dp graphs shortest paths trees two pointers *1900	1 / 1	6
	9551	P43E Race brute force implementation two pointers *2300	0 / 0	8
	9528	P46C Hamsters and Tigers two pointers *1600	0 / 0	5
	9512	P48G Galaxy Union dp trees two pointers *2700	0 / 0	10
	9477	P55E Very simple problem geometry two pointers *2500	0 / 0	9
	9456	P60A Where Are My Flakes? implementation two pointers *1300	0 / 0	4
	9400	P70C Lucky Tickets binary search data structures sortings two pointers *2200	0 / 0	8
	9366	P76B Mice greedy two pointers *2100	0 / 0	7
	9353	P78D Archer's Shot binary search geometry math two pointers *2300	0 / 0	8
	9349	P79C Beaver data structures dp greedy hashing strings two pointers *1800	0 / 0	6
	9319	P86D Powerful array data structures implementation math two pointers *2200	0 / 0	8
	9174	P121D Lucky Segments binary search implementation two pointers *2500	0 / 0	9
	9129	P131F Present to Mom binary search two pointers *2000	0 / 0	7
	9102	P138E Hellish Constraints brute force dp two pointers *2900	0 / 0	10
	9011	P161A Dress'em in Vests! binary search brute force greedy two pointers *1300	0 / 0	4
	8994	P163C Conveyor sortings two pointers *2100	0 / 0	7
	8990	P164B Ancient Berland Hieroglyphs two pointers *2000	0 / 0	7
	8984	P165C Another Problem on Strings binary search brute force dp math strings two pointers *1600	0 / 0	5
	8978	P166D Shoe Store dp graph matchings greedy sortings two pointers *2500	0 / 0	9
	8944	P175C Geometry Horse greedy implementation sortings two pointers *1600	0 / 0	5
	8899	P180E Cubes binary search dp two pointers *1800	0 / 0	6
	8860	P190D Non-Secret Cypher two pointers *1900	0 / 0	6
	8784	P203E Transportation greedy sortings two pointers *2300	0 / 0	8
	8773	P204E Little Elephant and Strings data structures implementation string suffix structures two pointers *2800	0 / 0	10
	8719	P216D Spider's Web binary search sortings two pointers *1700	0 / 0	5
	8701	P220E Little Elephant and Inversions data structures two pointers *2400	0 / 0	9
	8695	P222D Olympiad binary search greedy sortings two pointers *1900	0 / 0	6
	8687	P224B Array bitmasks implementation two pointers *1500	0 / 0	5
	8669	P229A Shifts brute force two pointers *1500	0 / 0	5
	8666	P229D Towers dp greedy two pointers *2100	0 / 0	7
	8660	P231C To Add or Not to Add binary search sortings two pointers *1600	0 / 0	5
	8633	P237C Primes on Interval binary search number theory two pointers *1600	0 / 0	5
	8606	P243D Cubes data structures dp geometry two pointers *2700	0 / 0	10
	8579	P250D Building Bridge geometry ternary search two pointers *1900	0 / 0	6
	8577	P251A Points on Line binary search combinatorics two pointers *1300	0 / 0	4
	8569	P253B Physics Practical binary search dp sortings two pointers *1400	0 / 0	4
	8567	P253D Table with Letters - 2 brute force two pointers *2000	0 / 0	7
	8532	P261E Maxim and Calculator brute force dp two pointers *2800	0 / 0	10
	8524	P264A Escape from Stones constructive algorithms data structures implementation two pointers *1200	0 / 0	4
	8521	P264D Colorful Stones dp two pointers *2500	0 / 0	9
	8465	P279B Books binary search brute force implementation two pointers *1400	0 / 0	4
	8464	P279C Ladder dp implementation two pointers *1700	0 / 0	5
	8460	P280B Maximum Xor Secondary data structures implementation two pointers *1800	0 / 0	6
	8455	P281B Nearest Fraction brute force implementation two pointers *1700	0 / 0	5
	8404	P293D Ksusha and Square geometry math probabilities two pointers *2700	0 / 0	10
	8370	P302B Eugeny and Play List binary search implementation two pointers *1200	0 / 0	4
	8353	P309A Morning run binary search math two pointers *2000	0 / 0	7
	8352	P309B Context Advertising dp two pointers *2100	0 / 0	7
	8333	P314D Sereja and Straight Lines binary search data structures geometry sortings two pointers *2500	0 / 0	9
	8305	P318B Strings of Power implementation strings two pointers *1300	0 / 0	4
	8207	P343C Read Time binary search greedy two pointers *1900	0 / 0	6
	8142	P359D Pair of Numbers binary search brute force data structures math two pointers *2000	0 / 0	7
	8119	P364E Empty Rectangles divide and conquer two pointers *3000	0 / 0	10
	8113	P366D Dima and Trap Graph binary search data structures dfs and similar dsu shortest paths two pointers *2000	0 / 0	7
	8090	P371E Subway Innovation greedy math two pointers *2000	0 / 0	7
	8089	P372A Counting Kangaroos is Fun binary search greedy sortings two pointers *1600	0 / 0	5
	8086	P372D Choosing Subtree is Fun binary search data structures dfs and similar trees two pointers *2600	0 / 0	10
	8051	P381A Sereja and Dima greedy implementation two pointers *800	0 / 0	3
	8043	P383B Volcanoes binary search implementation sortings two pointers *2500	0 / 0	9
	8038	P384B Multitasking greedy implementation sortings two pointers *1500	0 / 0	5
	8030	P386C Diverse Substrings dp strings two pointers *2000	0 / 0	7
	8027	P387B George and Round brute force greedy two pointers *1200	0 / 0	4
	8011	P391A Genetic Engineering implementation two pointers	0 / 0	(None)
	7945	P406E Hamming Triples implementation math two pointers *2800	0 / 0	10
	7912	P414D Mashmokh and Water Tanks binary search data structures greedy trees two pointers *2300	0 / 0	8
	7908	P416A Guess a number! greedy implementation two pointers *1400	0 / 0	4
	7894	P420C Bug in Code data structures graphs implementation two pointers *1900	0 / 0	6
	7875	P427C Checkposts dfs and similar graphs two pointers *1700	1 / 1	5
	7866	P430B Balls Game brute force two pointers *1400	0 / 0	4
	7857	P432D Prefixes and Suffixes dp string suffix structures strings two pointers *2000	0 / 0	7
	7827	P439D Devu and his Brother binary search sortings ternary search two pointers *1700	0 / 0	5
	7806	P444D DZY Loves Strings binary search hashing strings two pointers *2500	0 / 0	9
	7802	P446A DZY Loves Sequences dp implementation two pointers *1600	0 / 0	5
	7721	P466C Number of Ways binary search brute force data structures dp two pointers *1700	0 / 0	5
	7647	P484B Maximum Value binary search math sortings two pointers *2100	0 / 0	7
	7635	P487B Strip binary search data structures dp two pointers *2000	0 / 0	7
	7628	P489B BerSU Ball dfs and similar dp graph matchings greedy sortings two pointers *1200	0 / 0	4
	7607	P493C Vasya and Basketball binary search brute force data structures implementation sortings two pointers *1600	0 / 0	5
	7589	P498B Name That Tune dp probabilities two pointers *2400	0 / 0	9
	7567	P505C Mr dfs and similar dp two pointers *1900	0 / 0	6
	7514	P514D R2D2 and Droid Army binary search data structures two pointers *2000	0 / 0	7
	7502	P516D Drazil and Morning Exercise dfs and similar dp dsu trees two pointers *2800	0 / 0	10
	7483	P519D A and B and Interesting Substrings data structures dp two pointers *1800	0 / 0	6
	7465	P524D Social Network greedy two pointers *2100	0 / 0	7
	7417	P533E Correcting Mistakes constructive algorithms dp greedy hashing strings two pointers *1800	0 / 0	6
	7251	P577B Modulo Sum combinatorics data structures dp two pointers *1900	0 / 0	6
	7241	P580B Kefa and Company binary search sortings two pointers *1500	0 / 0	5
	7232	P581F Zublicanes and Mumocrates dp trees two pointers *2400	0 / 0	9
	7192	P592E BCPC binary search geometry two pointers *2700	0 / 0	10
	7184	P594C Edo and Magnets brute force greedy implementation two pointers *2300	0 / 0	8
	7159	P600B Queries about less or equal elements binary search data structures sortings two pointers *1300	0 / 0	4
	7148	P602B Approximating a Constant Range dp implementation two pointers *1400	0 / 0	4
	7123	P609D Gadgets for dollars and pounds binary search greedy two pointers *2000	0 / 0	7
	7117	P610D Vika and Segments constructive algorithms data structures geometry two pointers *2300	0 / 0	8
	7109	P611G New Year and Cake geometry two pointers *2900	0 / 0	10
	7100	P613B Skills binary search brute force dp greedy sortings two pointers *1900	0 / 0	6
	7086	P616D Longest k-Good Segment binary search data structures two pointers *1600	0 / 0	5
	7073	P618F Double Knapsack constructive algorithms two pointers *3000	0 / 0	10

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