	ID	题目显示标签隐藏标签	AC / 尝试	难度
	403	P1493F Enchanted Matrix bitmasks interactive number theory *2600	0 / 0	(无)
	402	P1494A ABC String bitmasks brute force implementation *900	0 / 0	(无)
	401	P1494B Berland Crossword bitmasks brute force greedy implementation *1400	0 / 0	(无)
	384	P1497D Genius bitmasks dp graphs number theory *2500	0 / 0	(无)
	380	P1498B Box Fitting binary search bitmasks data structures greedy *1300	0 / 0	(无)
	376	P1498F Christmas Game bitmasks data structures dfs and similar dp games math trees *2500	0 / 0	(无)
	366	P1500C Matrix Sorting bitmasks brute force constructive algorithms greedy two pointers *2600	0 / 0	(无)
	334	P1508C Complete the MST bitmasks brute force data structures dfs and similar dsu graphs greedy trees *2500	0 / 0	(无)
	310	P1511G Chips on a Board bitmasks brute force data structures dp games two pointers *2700	0 / 0	(无)
	301	P1513B AND Sequences bitmasks combinatorics constructive algorithms math *1400	0 / 0	(无)
	295	P1514B AND 0, Sum Big bitmasks combinatorics math *1200	0 / 0	(无)
	284	P1515H Phoenix and Bits bitmasks brute force data structures sortings *3500	0 / 0	(无)
	281	P1516B AGAGA XOOORRR bitmasks brute force dp greedy *1500	0 / 0	(无)
	280	P1516C Baby Ehab Partitions Again bitmasks constructive algorithms dp math *1700	0 / 0	(无)
	264	P1519F Chests and Keys bitmasks brute force dfs and similar dp flows *3200	0 / 0	(无)
	247	P1523D Love-Hate bitmasks brute force dp probabilities *2400	0 / 0	(无)
	245	P1523F Favorite Game bitmasks dp *3300	0 / 0	(无)
	229	P1527A And Then There Were K bitmasks *800	0 / 0	(无)
	210	P1530F Bingo bitmasks combinatorics dp math probabilities *2600	0 / 0	(无)
	186	P1533H Submatrices *special problem bitmasks data structures dp	0 / 0	(无)
	126	P1543C Need for Pink Slips bitmasks brute force dfs and similar implementation math probabilities *1900	0 / 0	(无)
	125	P1543D1 RPD and Rap Sheet (Easy Version) bitmasks constructive algorithms interactive math *1700	0 / 0	(无)
	123	P1543E The Final Pursuit bitmasks constructive algorithms divide and conquer graphs greedy math *2700	0 / 0	(无)
	110	P1547D Co-growing Sequence bitmasks constructive algorithms greedy *1300	0 / 0	(无)
	97	P1548D1 Gregor and the Odd Cows (Easy) bitmasks geometry math number theory *2300	0 / 0	(无)
	88	P1550E Stringforces binary search bitmasks brute force dp strings two pointers *2500	0 / 0	(无)
	75	P1552D Array Differentiation bitmasks brute force constructive algorithms dfs and similar dp graphs math *1800	0 / 0	(无)
	72	P1552G A Serious Referee bitmasks brute force dfs and similar sortings *3000	0 / 0	(无)
	67	P1553C Penalty bitmasks brute force dp greedy *1200	0 / 0	(无)
	62	P1553H XOR and Distance bitmasks divide and conquer trees *2900	0 / 0	(无)
	59	P1554B Cobb bitmasks brute force greedy math *1700	0 / 0	(无)
	58	P1554C Mikasa binary search bitmasks greedy implementation *1800	0 / 0	(无)
	46	P1556D Take a Guess bitmasks constructive algorithms interactive math *1800	0 / 0	(无)
	44	P1556F Sports Betting bitmasks combinatorics dp graphs math probabilities *2500	0 / 0	(无)
	43	P1556G Gates to Another World bitmasks data structures dsu two pointers *3300	0 / 0	(无)
	39	P1557C Moamen and XOR bitmasks combinatorics dp math matrices *1700	0 / 0	(无)
	30	P1559A Mocha and Math bitmasks constructive algorithms math *900	0 / 0	(无)
	18	P1560F1 Nearest Beautiful Number (easy version) binary search bitmasks brute force constructive algorithms dfs and similar greedy *1900	0 / 0	(无)
	17	P1560F2 Nearest Beautiful Number (hard version) bitmasks brute force constructive algorithms dfs and similar dp greedy *2100	0 / 0	(无)
	7225	P1566B MIN-MEX Cut bitmasks constructive algorithms dp	0 / 0	(无)
	7224	P1566C MAX-MEX Cut bitmasks constructive algorithms dp greedy	0 / 0	(无)
	5	P1567B MEXor Mixup bitmasks greedy	0 / 0	(无)
	4	P1567C Carrying Conundrum bitmasks combinatorics dp	0 / 0	(无)
	1873	P1569E Playoff Restoration bitmasks brute force hashing implementation meet-in-the-middle	0 / 0	(无)
	7304	P1571E Fix the String *special problem bitmasks dp greedy	0 / 0	(无)
	7241	P1579G Minimal Coverage binary search bitmasks dp *2200	0 / 0	(无)
	7364	P1582F1 Korney Korneevich and XOR (easy version) bitmasks dp *1800	0 / 0	(无)
	7348	P1583F Defender of Childhood Dreams bitmasks constructive algorithms divide and conquer	0 / 0	(无)
	7287	P1592C Bakry and Partitioning bitmasks constructive algorithms dfs and similar dp graphs trees	0 / 0	(无)
	7285	P1592E Bored Bakry bitmasks greedy math two pointers	0 / 0	(无)
	7327	P1594B Special Numbers bitmasks math *1100	0 / 0	(无)
	7330	P1598F RBS bitmasks dp	0 / 0	(无)
	7309	P1600J Robot Factory bitmasks dfs and similar	0 / 0	(无)
	7361	P1601A Array Elimination bitmasks math number theory *1300	0 / 0	(无)
	7454	P1679E Typical Party in Dorm bitmasks combinatorics dp strings *2400	0 / 0	(无)
	7453	P1679F Formalism for Formalism bitmasks dp math *2600	0 / 0	(无)
	7448	P1680E Moving Chips bitmasks dp greedy *2000	0 / 0	(无)
	7439	P1682B AND Sorting bitmasks constructive algorithms sortings *1100	0 / 0	(无)
	7412	P1688A Cirno's Perfect Bitmasks Classroom bitmasks brute force *800	0 / 0	(无)
	7411	P1688B Patchouli's Magical Talisman bitmasks constructive algorithms greedy sortings *800	0 / 0	(无)
	7405	P1689E ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs *2500	0 / 0	(无)
	7572	P1874B Jellyfish and Math bitmasks brute force dfs and similar dp graphs shortest paths *2400	0 / 0	9
	7565	P1875C Jellyfish and Green Apple bitmasks greedy math number theory *1400	0 / 0	4
	7550	P1878E Iva & Pav binary search bitmasks data structures greedy *1400	0 / 0	4
	7548	P1878G wxhtzdy ORO Tree binary search bitmasks brute force data structures dfs and similar implementation trees *2300	0 / 0	8
	7544	P1879D Sum of XOR Functions bitmasks combinatorics divide and conquer dp math *1700	0 / 0	5
	7533	P1882B Sets and Union bitmasks brute force constructive algorithms greedy *1300	0 / 0	4
	7531	P1882D Tree XOR bitmasks dfs and similar dp greedy trees *1900	0 / 0	6
	7524	P1883E Look Back bitmasks greedy *1700	0 / 0	5
	7511	P1886E I Wanna be the Team Leader bitmasks constructive algorithms dp greedy math sortings two pointers *2400	0 / 0	9
	7479	P1895D XOR Construction bitmasks constructive algorithms data structures math string suffix structures trees *1900	0 / 0	6
	7959	P1983G Your Loss bitmasks brute force dp trees *3000	0 / 0	10
	7920	P1988C Increasing Sequence with Fixed OR bitmasks constructive algorithms greedy *1300	0 / 0	4
	7907	P1990D Grid Puzzle bitmasks brute force dp greedy implementation *1800	0 / 0	6
	7902	P1991B AND Reconstruction bitmasks constructive algorithms greedy	0 / 0	(无)
	7900	P1991D Prime XOR Coloring bitmasks constructive algorithms graphs greedy math number theory	0 / 0	(无)
	7896	P1991H Prime Split Game bitmasks dp fft games math number theory	0 / 0	(无)
	8096	P1993E Xor-Grid Problem bitmasks dp	0 / 0	(无)
	7886	P1994B Fun Game bitmasks constructive algorithms greedy math *1100	0 / 0	3
	7883	P1994E Wooden Game bitmasks greedy math trees *2000	0 / 0	7
	7881	P1994G Minecraft bitmasks brute force dp graphs math *2600	0 / 0	10
	7875	P1995D Cases bitmasks brute force dp strings *2300	0 / 0	8

HGNU

根据当前过滤条件随机选择一道题

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开发与维护

杨旭龙、王树淳、王国斌、宋文宇、朱天伦

特别鸣谢

肖飞、关玉蓉、魏银珍、周芬

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