constructive algorithms - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	1631	P1603B Moderate Modular Mode constructive algorithms math number theory *1600	1 / 1	5
	1620	P1605D Treelabeling bitmasks constructive algorithms dfs and similar games greedy implementation trees *2100	0 / 0	7
	1613	P1606D Red-Blue Matrix brute force constructive algorithms implementation sortings *2400	0 / 0	9
	1597	P1608A Find Array constructive algorithms math *800	0 / 0	3
	1594	P1608B Build the Permutation constructive algorithms greedy *1200	0 / 0	4
	1566	P1610F Mashtali: a Space Oddysey constructive algorithms dfs and similar graphs *3000	0 / 0	10
	1562	P1611A Make Even constructive algorithms math *800	0 / 0	3
	1561	P1611B Team Composition: Programmers and Mathematicians binary search constructive algorithms math *800	0 / 0	3
	1560	P1611C Polycarp Recovers the Permutation constructive algorithms *1000	0 / 0	3
	1559	P1611D Weights Assignment For Tree Edges constructive algorithms trees *1500	0 / 0	5
	1554	P1612A Distance brute force constructive algorithms *800	0 / 0	3
	1553	P1612B Special Permutation constructive algorithms greedy *900	0 / 0	3
	1548	P1612G Max Sum Array combinatorics constructive algorithms greedy sortings *2500	0 / 0	9
	1541	P1614A Divan and a Store brute force constructive algorithms greedy *800	0 / 0	3
	1540	P1614B Divan and a New Project constructive algorithms sortings *1000	0 / 0	3
	1539	P1614C Divan and bitwise operations bitmasks combinatorics constructive algorithms dp math *1500	0 / 0	5
	1529	P1615G Maximum Adjacent Pairs constructive algorithms graph matchings *3300	0 / 0	10
	1528	P1615H Reindeer Games binary search constructive algorithms data structures divide and conquer flows graphs shortest paths *3000	0 / 0	10
	1519	P1617A Forbidden Subsequence constructive algorithms greedy sortings strings *800	0 / 0	3
	1518	P1617B GCD Problem brute force constructive algorithms math number theory *900	0 / 0	3
	1516	P1617D1 Too Many Impostors (easy version) constructive algorithms implementation interactive *1800	0 / 0	6
	1515	P1617D2 Too Many Impostors (hard version) constructive algorithms implementation interactive math *2400	0 / 0	9
	1509	P1618E Singers' Tour constructive algorithms math *1700	0 / 0	5
	1508	P1618F Reverse bitmasks constructive algorithms dfs and similar implementation math strings *2000	0 / 0	7
	1502	P1619E MEX and Increments constructive algorithms data structures dp greedy implementation math sortings *1700	0 / 0	5
	1501	P1619F Let's Play the Hat? brute force constructive algorithms greedy math *2000	0 / 0	7
	1498	P1620A Equal or Not Equal constructive algorithms dsu implementation *800	0 / 0	3
	1495	P1620D Exact Change brute force constructive algorithms greedy *2000	0 / 0	7
	1494	P1620E Replace the Numbers constructive algorithms data structures dsu implementation *1900	0 / 0	6
	1491	P1621A Stable Arrangement of Rooks constructive algorithms *800	0 / 0	3
	1488	P1621D The Winter Hike constructive algorithms greedy math *2100	0 / 0	7
	1477	P1622F Quadratic Set constructive algorithms hashing math number theory *2900	0 / 0	10
	1469	P1624C Division by Two and Permutation constructive algorithms flows graph matchings greedy math *1100	0 / 0	3
	1467	P1624E Masha-forgetful brute force constructive algorithms dp hashing implementation strings *2000	0 / 0	7
	1466	P1624F Interacdive Problem binary search constructive algorithms interactive *2000	0 / 0	7
	1458	P1626A Equidistant Letters constructive algorithms sortings *800	0 / 0	3
	1452	P1627A Not Shading constructive algorithms implementation *800	0 / 0	3
	1449	P1627C Not Assigning constructive algorithms dfs and similar number theory trees *1400	0 / 0	4
	1441	P1628A Meximum Array binary search constructive algorithms greedy implementation math two pointers *1400	0 / 0	4
	1437	P1628C Grid Xor constructive algorithms greedy implementation interactive math *2300	0 / 0	8
	1423	P1630A And Matching bitmasks constructive algorithms *1500	0 / 0	5
	1421	P1630B Range and Partition binary search constructive algorithms data structures greedy two pointers *1800	0 / 0	6
	1417	P1630D Flipping Range constructive algorithms dp greedy number theory *2400	0 / 0	9
	1407	P1632B Roof Construction bitmasks constructive algorithms *1000	0 / 0	3
	1393	P1634C OKEA constructive algorithms *1000	0 / 0	3
	1392	P1634D Finding Zero constructive algorithms interactive math *2000	0 / 0	7
	1391	P1634E Fair Share constructive algorithms data structures dfs and similar graph matchings graphs *2400	0 / 0	9
	1387	P1635C Differential Sorting constructive algorithms greedy *1200	0 / 0	4
	1385	P1635E Cars 2-sat constructive algorithms dfs and similar dsu graphs greedy sortings *2200	0 / 0	8
	1378	P1637F Towers constructive algorithms dfs and similar dp greedy trees *2500	0 / 0	9
	1377	P1637G Birthday constructive algorithms greedy math *3000	0 / 0	10
	1375	P1638A Reverse constructive algorithms greedy math *800	0 / 0	3
	1372	P1638D Big Brush constructive algorithms data structures greedy implementation *2000	0 / 0	7
	1357	P1641B Repetitions Decoding constructive algorithms implementation sortings *2000	0 / 0	7
	1349	P1644B Anti-Fibonacci Permutation brute force constructive algorithms implementation *800	0 / 0	3
	1343	P1646B Quality vs Quantity brute force constructive algorithms greedy sortings two pointers *800	0 / 0	3
	1342	P1646C Factorials and Powers of Two bitmasks brute force constructive algorithms dp math *1500	0 / 0	5
	1341	P1646D Weight the Tree constructive algorithms dfs and similar dp implementation trees *2000	0 / 0	7
	1339	P1646F Playing Around the Table constructive algorithms greedy implementation *2900	0 / 0	10
	1337	P1647B Madoka and the Elegant Gift brute force constructive algorithms graphs implementation *1200	0 / 0	4
	1336	P1647C Madoka and Childish Pranks constructive algorithms greedy *1300	0 / 0	4
	1335	P1647D Madoka and the Best School in Russia constructive algorithms dp math number theory *1900	0 / 0	6
	1331	P1648B Integral Array brute force constructive algorithms data structures math *1800	0 / 0	6
	1321	P1650D Twist the Permutation brute force constructive algorithms implementation math *1300	0 / 0	4
	1316	P1651B Prove Him Wrong constructive algorithms greedy *800	0 / 0	3
	1313	P1651E Sum of Matchings brute force combinatorics constructive algorithms dfs and similar graph matchings greedy math *2600	0 / 0	10
	1304	P1654H Three Minimums combinatorics constructive algorithms divide and conquer dp fft math *3500	0 / 0	10
	1301	P1656C Make Equal With Mod constructive algorithms math number theory sortings *1200	0 / 0	4
	1300	P1656D K-good constructive algorithms math number theory *1900	0 / 0	6
	1299	P1656E Equal Tree Sums constructive algorithms dfs and similar math trees *2200	0 / 0	8
	1298	P1656F Parametric MST binary search constructive algorithms graphs greedy math sortings *2600	0 / 0	10
	1297	P1656G Cycle Palindrome constructive algorithms graphs math *3200	0 / 0	10
	1295	P1656I Neighbour Ordering constructive algorithms graphs *3500	0 / 0	10
	1288	P1658A Marin and Photoshoot constructive algorithms implementation math *800	0 / 0	3
	1286	P1658C Shinju and the Lost Permutation constructive algorithms math *1700	0 / 0	5
	1282	P1658F Juju and Binary String brute force constructive algorithms greedy math *2700	0 / 0	10
	1281	P1659A Red Versus Blue constructive algorithms greedy implementation math *1000	0 / 0	3
	1280	P1659B Bit Flipping bitmasks constructive algorithms greedy strings *1300	0 / 0	4
	1278	P1659D Reverse Sort Sum constructive algorithms data structures greedy implementation math two pointers *1900	0 / 0	6
	1277	P1659E AND-MEX Walk bitmasks brute force constructive algorithms dfs and similar dsu graphs *2200	0 / 0	8
	1271	P1660E Matrix and Shifts brute force constructive algorithms greedy implementation *1600	0 / 0	5
	1250	P1662M Bottle Arrangements constructive algorithms	0 / 0	(None)
	1241	P1663G Six Characters *special problem constructive algorithms strings	0 / 0	(None)
	1240	P1663H Cross-Language Program *special problem constructive algorithms	0 / 0	(None)
	1239	P1665A GCD vs LCM constructive algorithms math *800	0 / 0	3
	1238	P1665B Array Cloning Technique constructive algorithms greedy sortings *900	0 / 0	3
	1236	P1665D GCD Guess bitmasks chinese remainder theorem constructive algorithms games interactive math number theory *2000	0 / 0	7
	1232	P1666C Connect the Points brute force constructive algorithms geometry *1800	0 / 0	6
	1230	P1666E Even Split binary search constructive algorithms greedy math *2500	0 / 0	9
	1226	P1666I Interactive Treasure Hunt brute force constructive algorithms geometry interactive math *2200	0 / 0	8
	1225	P1666J Job Lookup constructive algorithms dp shortest paths trees *2100	0 / 0	7
	1220	P1667C Half Queen Cover constructive algorithms math *2400	0 / 0	9
	1219	P1667D Edge Elimination constructive algorithms dfs and similar dp trees *2900	0 / 0	10
	1202	P1670E Hemose on the Tree bitmasks constructive algorithms dfs and similar trees *2200	0 / 0	8
	1197	P1671D Insert a Progression brute force constructive algorithms greedy *1600	0 / 0	5
	1193	P1672B I love AAAB constructive algorithms implementation *800	0 / 0	3
	1192	P1672C Unequal Array constructive algorithms greedy implementation *1100	0 / 0	3
	1191	P1672D Cyclic Rotation constructive algorithms greedy implementation two pointers *1700	0 / 0	5
	1190	P1672E notepad.exe binary search constructive algorithms greedy interactive *2200	0 / 0	8
	1189	P1672F1 Array Shuffling constructive algorithms graphs greedy *2000	0 / 0	7

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