	ID	题目显示标签隐藏标签	AC / 尝试	难度
	695	P1433E Two Round Dances combinatorics math *1300	0 / 0	(无)
	691	P1436A Reorder math *800	0 / 0	(无)
	690	P1436B Prime Square constructive algorithms math *900	0 / 0	(无)
	686	P1436F Sum Over Subsets combinatorics math number theory *2800	0 / 0	(无)
	685	P1437A Marketing Scheme brute force constructive algorithms greedy math *800	0 / 0	(无)
	683	P1437C Chef Monocarp dp flows graph matchings greedy math sortings *1800	0 / 0	(无)
	680	P1437F Emotional Fishermen combinatorics dp math two pointers *2600	0 / 0	(无)
	675	P1438D Powerful Ksenia bitmasks constructive algorithms math *2200	0 / 0	(无)
	666	P1440A Buy the String implementation math *800	0 / 0	(无)
	665	P1440B Sum of Medians greedy math *900	0 / 0	(无)
	658	P1443A Kids Seating constructive algorithms math *800	0 / 0	(无)
	657	P1443B Saving the City dp greedy math sortings *1300	0 / 0	(无)
	655	P1443E Long Permutation brute force math two pointers *2400	0 / 0	(无)
	654	P1444A Division brute force math number theory *1500	0 / 0	(无)
	653	P1444B Divide and Sum combinatorics math sortings *1900	0 / 0	(无)
	648	P1445B Elimination greedy math *900	0 / 0	(无)
	640	P1447A Add Candies constructive algorithms math *800	0 / 0	(无)
	639	P1447B Numbers Box greedy math *1000	0 / 0	(无)
	636	P1450C1 Errich-Tac-Toe (Easy Version) constructive algorithms math *2100	0 / 0	(无)
	635	P1450C2 Errich-Tac-Toe (Hard Version) constructive algorithms math *2300	0 / 0	(无)
	630	P1450H1 Multithreading (Easy Version) combinatorics fft math *2900	0 / 0	(无)
	629	P1450H2 Multithreading (Hard Version) combinatorics implementation math *3300	0 / 0	(无)
	628	P1451A Subtract or Divide greedy math *800	0 / 0	(无)
	625	P1451D Circle Game games geometry math *1700	0 / 0	(无)
	624	P1451E1 Bitwise Queries (Easy Version) bitmasks constructive algorithms interactive math *2000	0 / 0	(无)
	623	P1451E2 Bitwise Queries (Hard Version) bitmasks constructive algorithms interactive math *2300	0 / 0	(无)
	621	P1452A Robot Program math *800	0 / 0	(无)
	620	P1452B Toy Blocks binary search greedy math sortings *1400	0 / 0	(无)
	618	P1452D Radio Towers combinatorics dp math *1600	0 / 0	(无)
	611	P1453D Checkpoints brute force constructive algorithms greedy math probabilities *1900	0 / 0	(无)
	605	P1454D Number into Sequence constructive algorithms math number theory *1300	0 / 0	(无)
	602	P1455A Strange Functions math number theory *800	0 / 0	(无)
	601	P1455B Jumps constructive algorithms math *1200	0 / 0	(无)
	600	P1455C Ping-pong constructive algorithms games math *1100	0 / 0	(无)
	598	P1455E Four Points brute force constructive algorithms flows geometry greedy implementation math ternary search *2400	0 / 0	(无)
	594	P1458A Row GCD math number theory *1600	0 / 0	(无)
	592	P1458C Latin Square math matrices *2700	0 / 0	(无)
	588	P1459A Red-Blue Shuffle math probabilities *800	0 / 0	(无)
	587	P1459B Move and Turn dp math *1300	0 / 0	(无)
	584	P1461C Random Events dp math probabilities *1500	0 / 0	(无)
	582	P1461E Water Level brute force graphs greedy implementation math *2200	0 / 0	(无)
	578	P1462C Unique Number brute force greedy math *900	0 / 0	(无)
	577	P1462D Add to Neighbour and Remove greedy math number theory *1400	0 / 0	(无)
	576	P1462E1 Close Tuples (easy version) binary search combinatorics math sortings two pointers *1500	0 / 0	(无)
	575	P1462E2 Close Tuples (hard version) binary search combinatorics implementation math sortings two pointers *1700	0 / 0	(无)
	573	P1463A Dungeon binary search math *1100	0 / 0	(无)
	568	P1463F Max Correct Set bitmasks dp math *3100	0 / 0	(无)
	566	P1466A Bovine Dilemma brute force geometry math *800	0 / 0	(无)
	562	P1466E Apollo versus Pan bitmasks brute force math *1800	0 / 0	(无)
	561	P1466F Euclid's nightmare bitmasks dfs and similar dsu graphs greedy math sortings *2100	0 / 0	(无)
	560	P1466G Song of the Sirens combinatorics divide and conquer hashing math string suffix structures strings *2600	0 / 0	(无)
	559	P1466H Finding satisfactory solutions combinatorics dp graphs greedy math *3300	0 / 0	(无)
	557	P1467A Wizard of Orz constructive algorithms greedy math *900	0 / 0	(无)
	554	P1467D Sum of Paths combinatorics dp math *2200	0 / 0	(无)
	545	P1468H K and Medians constructive algorithms greedy math *2200	0 / 0	(无)
	544	P1468I Plane Tiling geometry implementation math *2500	0 / 0	(无)
	541	P1468L Prime Divisors Selection binary search greedy math number theory *2700	0 / 0	(无)
	535	P1469D Ceil Divisions brute force constructive algorithms math number theory *1700	0 / 0	(无)
	531	P1470B Strange Definition bitmasks graphs hashing math number theory *1900	0 / 0	(无)
	526	P1471A Strange Partition greedy math number theory *900	0 / 0	(无)
	525	P1471B Strange List brute force greedy implementation math *1100	0 / 0	(无)
	524	P1472A Cards for Friends greedy math *800	0 / 0	(无)
	523	P1472B Fair Division dp greedy math *800	0 / 0	(无)
	517	P1473A Replacing Elements greedy implementation math sortings *800	0 / 0	(无)
	516	P1473B String LCM brute force math number theory strings *1000	0 / 0	(无)
	515	P1473C No More Inversions constructive algorithms math *1500	0 / 0	(无)
	512	P1473F Strange Set flows math *2700	0 / 0	(无)
	511	P1473G Tiles combinatorics dp fft math *2800	0 / 0	(无)
	509	P1474B Different Divisors binary search constructive algorithms greedy math number theory *1000	0 / 0	(无)
	507	P1474D Cleaning data structures dp greedy math *2200	0 / 0	(无)
	505	P1474F 1 2 3 4 ... dp math matrices *3000	0 / 0	(无)
	504	P1475A Odd Divisor math number theory *900	0 / 0	(无)
	503	P1475B New Year's Number brute force dp math *900	0 / 0	(无)
	502	P1475C Ball in Berland combinatorics graphs math *1400	0 / 0	(无)
	500	P1475E Advertising Agency combinatorics math sortings *1600	0 / 0	(无)
	498	P1475G Strange Beauty dp math number theory sortings *1900	0 / 0	(无)
	497	P1476A K-divisible Sum binary search constructive algorithms greedy math *1000	0 / 0	(无)
	496	P1476B Inflation binary search brute force greedy math *1300	0 / 0	(无)
	490	P1477A Nezzar and Board constructive algorithms math number theory *1800	0 / 0	(无)
	488	P1477C Nezzar and Nice Beatmap constructive algorithms geometry greedy math sortings *2200	0 / 0	(无)
	485	P1477F Nezzar and Chocolate Bars combinatorics fft math probabilities *3500	0 / 0	(无)
	483	P1478B Nezzar and Lucky Number brute force dp greedy math *1100	0 / 0	(无)
	482	P1478C Nezzar and Symmetric Array implementation math sortings *1700	0 / 0	(无)
	476	P1479E School Clubs dp fft math number theory probabilities *3500	0 / 0	(无)
	467	P1482A Prison Break math *800	0 / 0	(无)
	466	P1482B Restore Modulo implementation math *1500	0 / 0	(无)
	459	P1485A Add and Divide brute force greedy math number theory *1000	0 / 0	(无)
	458	P1485B Replace and Keep Sorted dp implementation math *1200	0 / 0	(无)
	457	P1485C Floor and Mod binary search brute force math number theory *1700	0 / 0	(无)
	456	P1485D Multiples and Power Differences constructive algorithms graphs math number theory *2200	0 / 0	(无)
	445	P1487B Cat Cycle math number theory *1200	0 / 0	(无)
	444	P1487C Minimum Ties brute force constructive algorithms dfs and similar graphs greedy implementation math *1500	0 / 0	(无)
	443	P1487D Pythagorean Triples binary search brute force math number theory *1500	0 / 0	(无)
	440	P1487G String Counting combinatorics dp fft math *2700	0 / 0	(无)
	439	P1488A From Zero To Y special problem math 900	0 / 0	(无)
	437	P1488C Two Policemen special problem binary search brute force math 1900	0 / 0	(无)
	430	P1488J Flower Shop special problem data structures fft math 3100	0 / 0	(无)
	429	P1490A Dense Array greedy math *800	0 / 0	(无)
	428	P1490B Balanced Remainders brute force constructive algorithms math *1000	0 / 0	(无)
	427	P1490C Sum of Cubes binary search brute force brute force math *1100	0 / 0	(无)

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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