sortings - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	1933	P1557A Ezzat and Two Subsequences brute force math sortings *800	0 / 0	3
	1932	P1557B Moamen and k-subarrays greedy sortings *1100	0 / 0	3
	1922	P1558F Strange Sort data structures sortings *3300	0 / 0	10
	1907	P1560E Polycarp and String Transformation binary search implementation sortings strings *1800	0 / 0	6
	1904	P1561A Simply Strange Sort brute force implementation sortings *800	0 / 0	3
	1903	P1561C Deep Down Below binary search greedy sortings *1300	0 / 0	4
	1891	P1566D1 Seating Arrangements (easy version) data structures greedy sortings *1100	0 / 0	3
	1890	P1566D2 Seating Arrangements (hard version) data structures greedy implementation sortings two pointers *1600	0 / 0	5
	1887	P1566F Points Movement data structures dp greedy implementation sortings *2600	0 / 0	10
	1863	P1569D Inconvenient Pairs binary search data structures implementation sortings two pointers *1900	0 / 0	6
	1838	P1572A Book binary search brute force data structures dp graphs implementation sortings *1800	0 / 0	6
	1827	P1573B Swaps greedy math sortings *1400	0 / 0	4
	1821	P1574C Slay the Dragon binary search greedy sortings ternary search *1300	0 / 0	4
	1813	P1575A Another Sorting Problem data structures sortings strings *1100	0 / 0	3
	1797	P1575L Longest Array Deconstruction data structures divide and conquer dp sortings *2100	0 / 0	7
	1772	P1579B Shifting Sort implementation sortings *1100	0 / 0	3
	1734	P1583H Omkar and Tours data structures divide and conquer sortings trees *3300	0 / 0	10
	1731	P1584C Two Arrays greedy math sortings *900	0 / 0	3
	1707	P1592A Gamer Hemose binary search greedy math sortings *800	0 / 0	3
	1706	P1592B Hemose Shopping constructive algorithms dsu math sortings *1200	0 / 0	4
	1640	P1601C Optimal Insertion data structures divide and conquer dp greedy sortings *2300	0 / 0	8
	1639	P1601D Difficult Mountain data structures dp greedy sortings *2700	0 / 0	10
	1622	P1605B Reverse Sort greedy sortings *1000	0 / 0	3
	1619	P1605E Array Equalizer binary search greedy implementation math number theory sortings two pointers *2400	0 / 0	9
	1613	P1606D Red-Blue Matrix brute force constructive algorithms implementation sortings *2400	0 / 0	9
	1607	P1607C Minimum Extraction brute force sortings *1000	0 / 0	3
	1606	P1607D Blue-Red Permutation greedy math sortings *1300	0 / 0	4
	1598	P1607H Banquet Preparations 2 greedy sortings two pointers *2200	0 / 0	8
	1588	P1608E The Cells on the Paper binary search implementation sortings *2800	0 / 0	10
	1550	P1612E Messages brute force dp greedy probabilities sortings *2000	0 / 0	7
	1548	P1612G Max Sum Array combinatorics constructive algorithms greedy sortings *2500	0 / 0	9
	1546	P1613B Absent Remainder greedy implementation sortings *1000	0 / 0	3
	1540	P1614B Divan and a New Project constructive algorithms sortings *1000	0 / 0	3
	1531	P1615E Purple Crayon data structures dfs and similar games graphs greedy math sortings trees *2400	0 / 0	9
	1519	P1617A Forbidden Subsequence constructive algorithms greedy sortings strings *800	0 / 0	3
	1517	P1617C Paprika and Permutation binary search greedy math sortings *1300	0 / 0	4
	1513	P1618A Polycarp and Sums of Subsequences math sortings *800	0 / 0	3
	1507	P1618G Trader Problem data structures dsu greedy sortings *2200	0 / 0	8
	1503	P1619D New Year's Problem binary search greedy sortings *1800	0 / 0	6
	1502	P1619E MEX and Increments constructive algorithms data structures dp greedy implementation math sortings *1700	0 / 0	5
	1500	P1619G Unusual Minesweeper binary search dfs and similar dsu greedy sortings *2000	0 / 0	7
	1487	P1621E New School binary search data structures dp greedy implementation sortings *2300	0 / 0	8
	1481	P1622B Berland Music data structures greedy math sortings *1000	0 / 0	3
	1480	P1622C Set or Decrease binary search brute force greedy sortings *1600	0 / 0	5
	1475	P1623B Game on Ranges brute force dfs and similar implementation sortings *1100	0 / 0	3
	1468	P1624D Palindromes Coloring binary search greedy sortings strings *1400	0 / 0	4
	1463	P1625B Elementary Particles brute force greedy sortings *1100	0 / 0	3
	1461	P1625D Binary Spiders bitmasks data structures implementation math sortings trees *2300	0 / 0	8
	1458	P1626A Equidistant Letters constructive algorithms sortings *800	0 / 0	3
	1451	P1627B Not Sitting games greedy sortings *1300	0 / 0	4
	1429	P1628F Spaceship Crisis Management binary search data structures geometry sortings *3500	0 / 0	10
	1427	P1629A Download More RAM brute force greedy sortings *800	0 / 0	3
	1419	P1630C Paint the Middle dp greedy sortings two pointers *2200	0 / 0	8
	1397	P1633E Spanning Tree Queries binary search data structures dfs and similar dsu graphs greedy math sortings trees *2400	0 / 0	9
	1385	P1635E Cars 2-sat constructive algorithms dfs and similar dsu graphs greedy sortings *2200	0 / 0	8
	1383	P1637A Sorting Parts brute force sortings *800	0 / 0	3
	1376	P1637H Minimize Inversions Number data structures greedy math sortings *3500	0 / 0	10
	1374	P1638B Odd Swap Sort data structures math sortings *1100	0 / 0	3
	1358	P1641A Great Sequence brute force greedy sortings *1200	0 / 0	4
	1357	P1641B Repetitions Decoding constructive algorithms implementation sortings *2000	0 / 0	7
	1356	P1641C Anonymity Is Important binary search brute force data structures dsu greedy sortings *2200	0 / 0	8
	1343	P1646B Quality vs Quantity brute force constructive algorithms greedy sortings two pointers *800	0 / 0	3
	1332	P1648A Weird Sum combinatorics data structures geometry math matrices sortings *1400	0 / 0	4
	1322	P1650C Weight of the System of Nested Segments greedy hashing implementation sortings *1200	0 / 0	4
	1320	P1650E Rescheduling the Exam binary search data structures greedy implementation math sortings *1900	0 / 0	6
	1311	P1654A Maximum Cake Tastiness brute force greedy implementation sortings *800	0 / 0	3
	1309	P1654C Alice and the Cake data structures greedy implementation sortings *1400	0 / 0	4
	1306	P1654F Minimal String Xoration bitmasks data structures divide and conquer greedy hashing sortings strings *2800	0 / 0	10
	1303	P1656A Good Pairs math sortings *800	0 / 0	3
	1301	P1656C Make Equal With Mod constructive algorithms math number theory sortings *1200	0 / 0	4
	1298	P1656F Parametric MST binary search constructive algorithms graphs greedy math sortings *2600	0 / 0	10
	1291	P1657D For Gamers binary search brute force greedy math sortings *2000	0 / 0	7
	1283	P1658E Gojou and Matrix Game data structures dp games hashing implementation math number theory sortings *2500	0 / 0	9
	1254	P1662I Ice Cream Shop brute force implementation sortings	0 / 0	(None)
	1249	P1662N Drone Photo combinatorics math sortings	0 / 0	(None)
	1238	P1665B Array Cloning Technique constructive algorithms greedy sortings *900	0 / 0	3
	1237	P1665C Tree Infection binary search greedy sortings trees *1600	0 / 0	5
	1215	P1668B Social Distance greedy math sortings *900	0 / 0	3
	1213	P1669B Triple implementation sortings *800	0 / 0	3
	1206	P1670A Prof greedy implementation sortings *800	0 / 0	3
	1199	P1671B Consecutive Points Segment brute force math sortings *1000	0 / 0	3
	1196	P1671E Preorder combinatorics divide and conquer dp dsu hashing sortings trees *2100	0 / 0	7
	1175	P1674D A-B-C Sort constructive algorithms implementation sortings *1200	0 / 0	4
	1163	P1676B Equal Candies greedy math sortings *800	0 / 0	3
	1160	P1676E Eating Queries binary search greedy sortings *1100	2 / 2	3
	1159	P1676F Longest Strike data structures greedy implementation sortings two pointers *1300	0 / 0	4
	1156	P1676H2 Maximum Crossings (Hard Version) data structures divide and conquer sortings *1500	0 / 0	5
	1132	P1681C Double Sort implementation sortings *1200	0 / 0	4
	1127	P1682B AND Sorting bitmasks constructive algorithms sortings *1100	0 / 0	3
	1124	P1682E Unordered Swaps constructive algorithms dfs and similar graphs greedy math sortings trees *2700	0 / 0	10
	1123	P1682F MCMF? data structures flows graphs greedy sortings two pointers *2700	0 / 0	10
	1120	P1684C Column Swapping brute force constructive algorithms greedy implementation sortings *1400	0 / 0	4
	1119	P1684D Traps constructive algorithms greedy sortings *1700	1 / 1	5
	1112	P1685A Circular Local MiniMax constructive algorithms greedy sortings *1100	0 / 0	3
	1110	P1685B Linguistics greedy implementation sortings strings *2000	0 / 0	7
	1095	P1687B Railway System constructive algorithms graphs greedy interactive sortings *1700	0 / 0	5
	1092	P1687C Sanae and Giant Robot binary search brute force data structures dsu greedy sortings *2500	0 / 0	9
	1082	P1688B Patchouli's Magical Talisman bitmasks constructive algorithms greedy sortings *800	0 / 0	3
	1078	P1689A Lex String brute force greedy implementation sortings two pointers *800	0 / 0	3
	1062	P1690G Count the Trains binary search data structures greedy sortings *2000	0 / 0	7

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