	ID	题目显示标签隐藏标签	AC / 尝试	难度
	594	P1458A Row GCD math number theory *1600	0 / 0	(无)
	593	P1458B Glass Half Spilled dp *2000	0 / 0	(无)
	592	P1458C Latin Square math matrices *2700	0 / 0	(无)
	591	P1458D Flip and Reverse data structures graphs greedy *3100	0 / 0	(无)
	590	P1458E Nim Shortcuts data structures games *3100	0 / 0	(无)
	589	P1458F Range Diameter Sum data structures trees *3500	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)
	586	P1461A String Generation constructive algorithms greedy *800	0 / 0	(无)
	585	P1461B Find the Spruce brute force dp implementation *1400	0 / 0	(无)
	584	P1461C Random Events dp math probabilities *1500	0 / 0	(无)
	583	P1461D Divide and Summarize binary search brute force data structures divide and conquer implementation sortings *1600	0 / 0	(无)
	582	P1461E Water Level brute force graphs greedy implementation math *2200	0 / 0	(无)
	581	P1461F Mathematical Expression constructive algorithms dp greedy *2700	0 / 0	(无)
	580	P1462A Favorite Sequence implementation two pointers *800	0 / 0	(无)
	579	P1462B Last Year's Substring dp implementation strings *800	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)
	574	P1462F The Treasure of The Segments binary search data structures greedy *1800	0 / 0	(无)
	573	P1463A Dungeon binary search math *1100	0 / 0	(无)
	572	P1463B Find The Array bitmasks constructive algorithms greedy *1400	0 / 0	(无)
	571	P1463C Busy Robot implementation *1800	0 / 0	(无)
	570	P1463D Pairs binary search constructive algorithms greedy two pointers *1900	0 / 0	(无)
	569	P1463E Plan of Lectures constructive algorithms dfs and similar dsu graphs implementation sortings trees *2400	0 / 0	(无)
	568	P1463F Max Correct Set bitmasks dp math *3100	0 / 0	(无)
	567	P1464F My Beautiful Madness data structures trees *3500	0 / 0	(无)
	566	P1466A Bovine Dilemma brute force geometry math *800	0 / 0	(无)
	565	P1466B Last minute enhancements dp greedy *800	0 / 0	(无)
	564	P1466C Canine poetry dp greedy strings *1300	0 / 0	(无)
	563	P1466D 13th Labour of Heracles data structures greedy sortings trees *1500	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)
	558	P1466I The Riddle of the Sphinx binary search data structures data structures interactive *3400	0 / 0	(无)
	557	P1467A Wizard of Orz constructive algorithms greedy math *900	0 / 0	(无)
	556	P1467B Hills And Valleys brute force implementation *1700	0 / 0	(无)
	555	P1467C Three Bags constructive algorithms greedy *1900	0 / 0	(无)
	554	P1467D Sum of Paths combinatorics dp math *2200	0 / 0	(无)
	553	P1467E Distinctive Roots in a Tree data structures dfs and similar dp trees *2500	0 / 0	(无)
	552	P1468A LaIS data structures dp greedy *2200	0 / 0	(无)
	551	P1468B Bakery data structures dsu *2900	0 / 0	(无)
	550	P1468C Berpizza data structures implementation *1400	0 / 0	(无)
	549	P1468D Firecrackers binary search sortings *1700	0 / 0	(无)
	548	P1468E Four Segments greedy *800	0 / 0	(无)
	547	P1468F Full Turn geometry hashing number theory *1700	0 / 0	(无)
	546	P1468G Hobbits binary search geometry *2500	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)
	543	P1468J Road Reform dsu graphs greedy *1800	0 / 0	(无)
	542	P1468K The Robot brute force implementation *1600	0 / 0	(无)
	541	P1468L Prime Divisors Selection binary search greedy math number theory *2700	0 / 0	(无)
	540	P1468M Similar Sets data structures graphs implementation *2300	0 / 0	(无)
	539	P1468N Waste Sorting greedy implementation *900	0 / 0	(无)
	538	P1469A Regular Bracket Sequence constructive algorithms greedy *1000	0 / 0	(无)
	537	P1469B Red and Blue dp greedy *1000	0 / 0	(无)
	536	P1469C Building a Fence dp greedy implementation two pointers *1600	0 / 0	(无)
	535	P1469D Ceil Divisions brute force constructive algorithms math number theory *1700	0 / 0	(无)
	534	P1469E A Bit Similar bitmasks brute force hashing string suffix structures strings two pointers *2400	0 / 0	(无)
	533	P1469F Power Sockets binary search data structures greedy *2600	0 / 0	(无)
	532	P1470A Strange Birthday Party binary search dp greedy sortings two pointers *1300	0 / 0	(无)
	531	P1470B Strange Definition bitmasks graphs hashing math number theory *1900	0 / 0	(无)
	530	P1470C Strange Shuffle binary search brute force constructive algorithms interactive *2500	0 / 0	(无)
	529	P1470D Strange Housing constructive algorithms dfs and similar graph matchings graphs greedy *2200	0 / 0	(无)
	528	P1470E Strange Permutation binary search combinatorics data structures dp graphs implementation two pointers *3200	0 / 0	(无)
	527	P1470F Strange Covering divide and conquer *3500	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)
	522	P1472C Long Jumps dp graphs *1100	0 / 0	(无)
	521	P1472D Even-Odd Game dp games greedy sortings *1200	0 / 0	(无)
	520	P1472E Correct Placement binary search data structures dp sortings two pointers *1700	0 / 0	(无)
	519	P1472F New Year's Puzzle brute force dp graph matchings greedy sortings *2100	0 / 0	(无)
	518	P1472G Moving to the Capital dfs and similar dp graphs shortest paths *2100	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)
	514	P1473D Program data structures dp implementation strings *1700	0 / 0	(无)
	513	P1473E Minimum Path graphs shortest paths *2400	0 / 0	(无)
	512	P1473F Strange Set flows math *2700	0 / 0	(无)
	511	P1473G Tiles combinatorics dp fft math *2800	0 / 0	(无)
	510	P1474A Puzzle From the Future greedy *800	0 / 0	(无)
	509	P1474B Different Divisors binary search constructive algorithms greedy math number theory *1000	0 / 0	(无)
	508	P1474C Array Destruction brute force constructive algorithms data structures greedy implementation sortings *1700	0 / 0	(无)
	507	P1474D Cleaning data structures dp greedy math *2200	0 / 0	(无)
	506	P1474E What Is It? constructive algorithms greedy *2500	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)
	501	P1475D Cleaning the Phone binary search dp sortings two pointers *1800	0 / 0	(无)
	500	P1475E Advertising Agency combinatorics math sortings *1600	0 / 0	(无)
	499	P1475F Unusual Matrix 2-sat brute force constructive algorithms *1900	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)
	495	P1476C Longest Simple Cycle dp graphs greedy *1600	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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