bitmasks - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	2429	P1494A ABC String bitmasks brute force implementation *900	0 / 0	3
	2427	P1494B Berland Crossword bitmasks brute force greedy implementation *1400	0 / 0	4
	2397	P1497D Genius bitmasks dp graphs number theory *2500	0 / 0	9
	2389	P1498B Box Fitting binary search bitmasks data structures greedy *1300	0 / 0	4
	2384	P1498F Christmas Game bitmasks data structures dfs and similar dp games math trees *2500	0 / 0	9
	2368	P1500C Matrix Sorting bitmasks brute force constructive algorithms greedy two pointers *2600	0 / 0	10
	2324	P1508C Complete the MST bitmasks brute force data structures dfs and similar dsu graphs greedy trees *2500	0 / 0	9
	2289	P1511G Chips on a Board bitmasks brute force data structures dp games two pointers *2700	0 / 20	10
	2273	P1513B AND Sequences bitmasks combinatorics constructive algorithms math *1400	0 / 0	4
	2267	P1514B AND 0, Sum Big bitmasks combinatorics math *1200	0 / 0	4
	2254	P1515H Phoenix and Bits bitmasks brute force data structures sortings *3500	0 / 0	10
	2248	P1516B AGAGA XOOORRR bitmasks brute force dp greedy *1500	0 / 0	5
	2246	P1516C Baby Ehab Partitions Again bitmasks constructive algorithms dp math *1700	0 / 0	5
	2223	P1519F Chests and Keys bitmasks brute force dfs and similar dp flows *3200	0 / 0	10
	2204	P1523D Love-Hate bitmasks brute force dp probabilities *2400	0 / 0	9
	2200	P1523F Favorite Game bitmasks dp *3300	0 / 0	10
	2176	P1527A And Then There Were K bitmasks *800	0 / 0	3
	2148	P1530F Bingo bitmasks combinatorics dp math probabilities *2600	0 / 0	10
	2129	P1533H Submatrices *special problem bitmasks data structures dp	0 / 0	(None)
	2054	P1543C Need for Pink Slips bitmasks brute force dfs and similar implementation math probabilities *1900	0 / 0	6
	2053	P1543D1 RPD and Rap Sheet (Easy Version) bitmasks constructive algorithms interactive math *1700	0 / 0	5
	2051	P1543E The Final Pursuit bitmasks constructive algorithms divide and conquer graphs greedy math *2700	0 / 0	10
	2038	P1547D Co-growing Sequence bitmasks constructive algorithms greedy *1300	0 / 0	4
	2026	P1548D1 Gregor and the Odd Cows (Easy) bitmasks geometry math number theory *2300	0 / 0	8
	2011	P1550E Stringforces binary search bitmasks brute force dp strings two pointers *2500	0 / 0	9
	1984	P1552D Array Differentiation bitmasks brute force constructive algorithms dfs and similar dp graphs math *1800	0 / 0	6
	1978	P1552G A Serious Referee bitmasks brute force dfs and similar sortings *3000	0 / 0	10
	1969	P1553C Penalty bitmasks brute force dp greedy *1200	0 / 0	4
	1959	P1553H XOR and Distance bitmasks divide and conquer trees *2900	0 / 0	10
	1953	P1554B Cobb bitmasks brute force greedy math *1700	0 / 0	5
	1951	P1554C Mikasa binary search bitmasks greedy implementation *1800	0 / 0	6
	1938	P1556D Take a Guess bitmasks constructive algorithms interactive math *1800	0 / 0	6
	1936	P1556F Sports Betting bitmasks combinatorics dp graphs math probabilities *2500	0 / 0	9
	1935	P1556G Gates to Another World bitmasks data structures dsu two pointers *3300	0 / 0	10
	1930	P1557C Moamen and XOR bitmasks combinatorics dp math matrices *1700	0 / 0	5
	1921	P1559A Mocha and Math bitmasks constructive algorithms math *900	0 / 0	3
	1906	P1560F1 Nearest Beautiful Number (easy version) binary search bitmasks brute force constructive algorithms dfs and similar greedy *1900	0 / 0	6
	1905	P1560F2 Nearest Beautiful Number (hard version) bitmasks brute force constructive algorithms dfs and similar dp greedy *2100	0 / 1	7
	1893	P1566B MIN-MEX Cut bitmasks constructive algorithms dp greedy *800	0 / 0	3
	1892	P1566C MAX-MEX Cut bitmasks constructive algorithms dp greedy *1000	0 / 0	3
	1880	P1567B MEXor Mixup bitmasks greedy *1000	0 / 0	3
	1878	P1567C Carrying Conundrum bitmasks combinatorics dp math *1600	0 / 0	5
	1861	P1569E Playoff Restoration bitmasks brute force hashing implementation meet-in-the-middle *2600	0 / 0	10
	1850	P1571E Fix the String special problem bitmasks dp greedy 1700	0 / 0	5
	1752	P1582F1 Korney Korneevich and XOR (easy version) bitmasks dp greedy *1800	0 / 0	6
	1737	P1583F Defender of Childhood Dreams bitmasks constructive algorithms divide and conquer *2500	0 / 0	9
	1727	P1584F Strange LCS bitmasks dp graphs greedy strings *2600	0 / 0	10
	1705	P1592C Bakry and Partitioning bitmasks constructive algorithms dfs and similar dp graphs trees *1700	0 / 0	5
	1703	P1592E Bored Bakry bitmasks greedy math two pointers *2400	0 / 0	9
	1685	P1594B Special Numbers bitmasks math *1100	0 / 0	3
	1667	P1598F RBS binary search bitmasks brute force data structures dp *2400	0 / 0	9
	1650	P1599J Bob's Beautiful Array bitmasks brute force greedy *2600	0 / 0	10
	1646	P1600J Robot Factory bitmasks dfs and similar *1400	0 / 0	4
	1644	P1601A Array Elimination bitmasks greedy math number theory *1300	0 / 0	4
	1620	P1605D Treelabeling bitmasks constructive algorithms dfs and similar games greedy implementation trees *2100	0 / 0	7
	1575	P1609E William The Oblivious bitmasks data structures dp matrices *2400	0 / 0	9
	1539	P1614C Divan and bitwise operations bitmasks combinatorics constructive algorithms dp math *1500	0 / 0	5
	1534	P1615B And It's Non-Zero bitmasks greedy math *1300	0 / 0	4
	1532	P1615D X(or)-mas Tree bitmasks dfs and similar dsu graphs trees *2200	0 / 0	8
	1520	P1616H Keep XOR Low bitmasks combinatorics data structures divide and conquer dp math *3000	0 / 0	10
	1508	P1618F Reverse bitmasks constructive algorithms dfs and similar implementation math strings *2000	0 / 0	7
	1492	P1620G Subsequences Galore bitmasks combinatorics dp *2400	0 / 0	9
	1478	P1622E Math Test bitmasks brute force greedy *2200	0 / 0	8
	1465	P1624G MinOr Tree bitmasks dfs and similar dsu graphs greedy *1900	0 / 0	6
	1464	P1625A Ancient Civilization bitmasks greedy math *800	0 / 0	3
	1461	P1625D Binary Spiders bitmasks data structures implementation math sortings trees *2300	0 / 0	8
	1423	P1630A And Matching bitmasks constructive algorithms *1500	0 / 0	5
	1407	P1632B Roof Construction bitmasks constructive algorithms *1000	0 / 0	3
	1406	P1632C Strange Test binary search bitmasks brute force dp math *1600	0 / 0	5
	1394	P1634B Fortune Telling bitmasks math *1400	0 / 0	4
	1389	P1635A Min Or Sum bitmasks greedy *800	0 / 0	3
	1386	P1635D Infinite Set bitmasks dp math matrices number theory strings *1800	0 / 0	6
	1355	P1641D Two Arrays bitmasks brute force combinatorics greedy hashing math two pointers *2700	0 / 1	10
	1342	P1646C Factorials and Powers of Two bitmasks brute force constructive algorithms dp math *1500	0 / 0	5
	1306	P1654F Minimal String Xoration bitmasks data structures divide and conquer greedy hashing sortings strings *2800	0 / 0	10
	1285	P1658D1 388535 (Easy Version) bitmasks math *1600	0 / 0	5
	1284	P1658D2 388535 (Hard Version) bitmasks brute force data structures math *2300	0 / 0	8
	1280	P1659B Bit Flipping bitmasks constructive algorithms greedy strings *1300	0 / 0	4
	1277	P1659E AND-MEX Walk bitmasks brute force constructive algorithms dfs and similar dsu graphs *2200	0 / 0	8
	1267	P1661B Getting Zero bitmasks brute force dfs and similar dp graphs greedy shortest paths *1300	0 / 0	4
	1236	P1665D GCD Guess bitmasks chinese remainder theorem constructive algorithms games interactive math number theory *2000	0 / 0	7
	1235	P1665E MinimizOR bitmasks brute force data structures divide and conquer greedy implementation two pointers *2500	0 / 0	9
	1207	P1669H Maximal AND bitmasks greedy math *1300	0 / 0	4
	1202	P1670E Hemose on the Tree bitmasks constructive algorithms dfs and similar trees *2200	0 / 0	8
	1201	P1670F Jee, You See? bitmasks combinatorics dp *2400	0 / 0	9
	1180	P1673E Power or XOR? bitmasks combinatorics math number theory *2500	0 / 0	9
	1179	P1673F Anti-Theft Road Planning bitmasks constructive algorithms divide and conquer greedy interactive math *2400	0 / 0	9
	1142	P1679E Typical Party in Dorm bitmasks combinatorics dp strings *2400	0 / 0	9
	1141	P1679F Formalism for Formalism bitmasks dp math *2600	0 / 0	10
	1136	P1680E Moving Chips bitmasks dp greedy *2000	0 / 0	7
	1127	P1682B AND Sorting bitmasks constructive algorithms sortings *1100	0 / 0	3
	1084	P1688A Cirno's Perfect Bitmasks Classroom bitmasks brute force *800	0 / 0	3
	1082	P1688B Patchouli's Magical Talisman bitmasks constructive algorithms greedy sortings *800	0 / 0	3
	1071	P1689E ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs *2500	0 / 0	9
	1028	P1696A NIT orz! bitmasks greedy *800	0 / 0	3
	1001	P1698A XOR Mixup bitmasks brute force *800	0 / 0	3
	990	P1698G Long Binary String bitmasks math matrices meet-in-the-middle number theory *2900	0 / 0	10
	985	P1699B Almost Ternary Matrix bitmasks constructive algorithms matrices *900	0 / 0	3
	955	P1703G Good Key, Bad Key bitmasks brute force dp greedy math *1600	0 / 0	5
	941	P1705E Mark and Professor Koro binary search bitmasks brute force combinatorics data structures greedy *2300	0 / 0	8

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