two pointers - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	4253	P1209G1 Into Blocks (easy version) data structures dsu greedy implementation two pointers *2000	0 / 0	7
	4170	P1223D Sequence Sorting dp greedy two pointers *2000	0 / 0	7
	4164	P1225B2 TV Subscriptions (Hard Version) implementation two pointers *1300	0 / 0	4
	4125	P1237B Balanced Tunnel data structures sortings two pointers *1300	0 / 0	4
	4091	P1244E Minimizing Difference binary search constructive algorithms greedy sortings ternary search two pointers *2000	0 / 0	7
	4063	P1250G Discarding Game dp greedy two pointers *2300	0 / 0	8
	4055	P1251A Broken Keyboard brute force strings two pointers *1000	0 / 0	3
	4053	P1251C Minimize The Integer greedy two pointers *1600	0 / 0	5
	4036	P1252E Songwriter greedy two pointers *2200	0 / 0	8
	4005	P1254B1 Send Boxes to Alice (Easy Version) constructive algorithms greedy math number theory ternary search two pointers *1800	0 / 0	6
	4003	P1254B2 Send Boxes to Alice (Hard Version) constructive algorithms greedy math number theory ternary search two pointers *2100	0 / 0	7
	3973	P1257C Dominated Subarray greedy implementation sortings strings two pointers *1200	0 / 0	4
	3972	P1257D Yet Another Monster Killing Problem binary search data structures dp greedy sortings two pointers *1700	0 / 0	5
	3921	P1265B Beautiful Numbers data structures implementation math two pointers *1300	0 / 0	4
	3911	P1266D Decreasing Debts constructive algorithms data structures graphs greedy implementation math two pointers *2000	0 / 0	7
	3826	P1272F Two Bracket Sequences dp strings two pointers *2200	0 / 0	8
	3761	P1282C Petya and Exam greedy sortings two pointers *1800	0 / 0	6
	3729	P1285E Delete a Segment brute force constructive algorithms data structures dp graphs sortings trees two pointers *2300	0 / 0	8
	3697	P1290B Irreducible Anagrams binary search constructive algorithms data structures strings two pointers *1800	0 / 0	6
	3588	P1304C Air Conditioner dp greedy implementation sortings two pointers *1500	0 / 0	5
	3587	P1304D Shortest and Longest LIS constructive algorithms graphs greedy two pointers *1800	0 / 0	6
	3582	P1305B Kuroni and Simple Strings constructive algorithms greedy strings two pointers *1200	0 / 0	4
	3537	P1312F Attack on Red Kingdom games two pointers *2500	0 / 0	9
	3530	P1313E Concatenation with intersection data structures hashing strings two pointers *2700	0 / 0	10
	3478	P1324D Pair of Topics binary search data structures sortings two pointers *1400	0 / 0	4
	3458	P1326E Bombs data structures two pointers *2400	0 / 0	9
	3445	P1327F AND Segments bitmasks combinatorics data structures dp two pointers *2500	0 / 0	9
	3386	P1333C Eugene and an array binary search data structures implementation two pointers *1700	0 / 0	5
	3382	P1333F Kate and imperfection greedy implementation math number theory sortings two pointers *2200	0 / 0	8
	3366	P1335E1 Three Blocks Palindrome (easy version) binary search brute force data structures dp two pointers *1700	0 / 0	5
	3364	P1335E2 Three Blocks Palindrome (hard version) brute force data structures dp two pointers *1800	0 / 0	6
	3360	P1336B Xenia and Colorful Gems binary search greedy math sortings two pointers *1700	0 / 0	5
	3334	P1342D Multiple Testcases binary search constructive algorithms data structures greedy sortings two pointers *1900	0 / 0	6
	3329	P1343C Alternating Subsequence dp greedy two pointers *1200	0 / 0	4
	3328	P1343D Constant Palindrome Sum brute force data structures greedy two pointers *1700	0 / 0	5
	3286	P1352E Special Elements brute force implementation two pointers *1500	0 / 0	5
	3276	P1354B Ternary String binary search dp implementation two pointers *1200	0 / 0	4
	3267	P1355C Count Triangles binary search implementation math two pointers *1800	0 / 0	6
	3232	P1358D The Best Vacation binary search brute force greedy implementation two pointers *1900	0 / 0	6
	3228	P1359B New Theatre Square brute force dp greedy implementation two pointers *1000	0 / 0	3
	3226	P1359D Yet Another Yet Another Task data structures dp implementation two pointers *2000	0 / 0	7
	3200	P1364A XXXXX brute force data structures number theory two pointers *1200	0 / 0	4
	3199	P1364B Most socially-distanced subsequence greedy two pointers *1300	0 / 0	4
	3187	P1366B Shuffle math two pointers *1300	0 / 0	4
	3184	P1366E Two Arrays binary search brute force combinatorics constructive algorithms dp two pointers *2100	0 / 0	7
	3176	P1367F1 Flying Sort (Easy Version) dp greedy two pointers *2100	0 / 0	7
	3175	P1367F2 Flying Sort (Hard Version) binary search data structures dp greedy sortings two pointers *2400	0 / 0	9
	3163	P1369C RationalLee greedy math sortings two pointers *1400	0 / 0	4
	3141	P1372E Omkar and Last Floor dp greedy two pointers *2900	1 / 1	10
	3129	P1374D Zero Remainder Array math sortings two pointers *1400	0 / 0	4
	3127	P1374E2 Reading Books (hard version) data structures greedy implementation sortings ternary search two pointers *2500	0 / 0	9
	3114	P1379C Choosing flowers binary search brute force data structures dfs and similar dp greedy sortings two pointers *2000	0 / 0	7
	3113	P1379D New Passenger Trams binary search brute force data structures sortings two pointers *2300	0 / 0	8
	3106	P1380D Berserk And Fireball constructive algorithms greedy implementation math two pointers *2000	0 / 0	7
	3101	P1381A2 Prefix Flip (Hard Version) constructive algorithms data structures implementation strings two pointers *1700	0 / 0	5
	3099	P1381C Mastermind constructive algorithms graph matchings greedy implementation sortings two pointers *2500	0 / 0	9
	3098	P1381D The Majestic Brown Tree Snake dfs and similar dp greedy trees two pointers *3000	0 / 0	10
	3094	P1383A String Transformation 1 dsu graphs greedy sortings strings trees two pointers *1700	0 / 0	5
	3064	P1389C Good String brute force dp greedy two pointers *1500	0 / 0	5
	3040	P1393E2 Twilight and Ancient Scroll (harder version) dp hashing implementation string suffix structures strings two pointers *3200	0 / 0	10
	3039	P1394A Boboniu Chats with Du dp greedy sortings two pointers *1800	0 / 0	6
	3028	P1396D Rainbow Rectangles data structures sortings two pointers *3300	0 / 0	10
	3019	P1398F Controversial Rounds binary search data structures dp greedy two pointers *2500	0 / 0	9
	3015	P1399C Boats Competition brute force greedy two pointers *1200	0 / 0	4
	3012	P1399E2 Weights Division (hard version) binary search dfs and similar greedy sortings trees two pointers *2200	0 / 0	8
	3007	P1400D Zigzags brute force combinatorics data structures math two pointers *1900	0 / 0	6
	3004	P1400G Mercenaries bitmasks brute force combinatorics dp dsu math two pointers *2600	0 / 0	10
	2994	P1403A The Potion of Great Power special problem 2-sat binary search data structures graphs interactive sortings two pointers 2400	0 / 0	9
	2989	P1404C Fixed Point Removal binary search constructive algorithms data structures greedy two pointers *2300	0 / 0	8
	2977	P1407C Chocolate Bunny constructive algorithms interactive math two pointers *1600	0 / 0	5
	2972	P1408C Discrete Acceleration binary search dp implementation math two pointers *1500	0 / 0	5
	2971	P1408D Searchlights binary search brute force data structures dp implementation sortings two pointers *2000	0 / 0	7
	2961	P1409E Two Platforms binary search dp sortings two pointers *1800	0 / 0	6
	2950	P1413C Perform Easily binary search brute force dp implementation sortings two pointers *1900	0 / 0	6
	2940	P1416A k-Amazing Numbers binary search data structures implementation two pointers *1500	0 / 0	5
	2927	P1418F Equal Product data structures math number theory two pointers *3000	0 / 0	10
	2926	P1418G Three Occurrences data structures divide and conquer hashing two pointers *2500	0 / 0	9
	2921	P1419D2 Sage's Birthday (hard version) binary search brute force constructive algorithms greedy sortings two pointers *1500	0 / 0	5
	2891	P1423K Lonely Numbers binary search math number theory two pointers *1600	0 / 0	5
	2858	P1428F Fruit Sequences binary search data structures divide and conquer dp two pointers *2400	0 / 0	9
	2851	P1430D String Deletion binary search data structures greedy two pointers *1700	0 / 0	5
	2846	P1431B Polycarp and the Language of Gods special problem implementation two pointers 1400	0 / 0	4
	2840	P1431H Rogue-like Game special problem brute force greedy two pointers 2600	0 / 0	10
	2825	P1436E Complicated Computations binary search data structures two pointers *2400	0 / 0	9
	2818	P1437F Emotional Fishermen combinatorics dp math two pointers *2600	0 / 0	10
	2812	P1438E Yurii Can Do Everything binary search bitmasks brute force constructive algorithms divide and conquer two pointers *2500	0 / 0	9
	2793	P1443E Long Permutation brute force math two pointers *2400	0 / 0	9
	2781	P1446D2 Frequency Problem (Hard Version) data structures greedy two pointers *3000	0 / 0	10
	2772	P1450D Rating Compression binary search data structures greedy implementation two pointers *1800	0 / 0	6
	2755	P1452E Two Editorials brute force dp greedy sortings two pointers *2500	0 / 0	9
	2741	P1454F Array Partition binary search data structures greedy two pointers *2100	0 / 0	7
	2710	P1462A Favorite Sequence implementation two pointers *800	0 / 0	3
	2705	P1462E1 Close Tuples (easy version) binary search combinatorics math sortings two pointers *1500	0 / 0	5
	2704	P1462E2 Close Tuples (hard version) binary search combinatorics implementation math sortings two pointers *1700	0 / 0	5
	2695	P1463D Pairs binary search constructive algorithms greedy two pointers *1900	0 / 0	6
	2635	P1469C Building a Fence dp greedy implementation two pointers *1600	0 / 0	5
	2631	P1469E A Bit Similar bitmasks brute force hashing string suffix structures strings two pointers *2400	0 / 0	9
	2626	P1470A Strange Birthday Party binary search dp greedy sortings two pointers *1300	0 / 0	4
	2619	P1470E Strange Permutation binary search combinatorics data structures dp graphs implementation two pointers *3200	0 / 0	10
	2604	P1472E Correct Placement binary search data structures dp sortings two pointers *1700	0 / 0	5

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