	ID	题目显示标签隐藏标签	AC / 尝试	难度
	785	P1419C Killjoy greedy implementation math *1500	0 / 0	(无)
	782	P1419E Decryption constructive algorithms implementation math number theory *2100	0 / 0	(无)
	781	P1419F Rain of Fire binary search data structures dfs and similar dsu graphs implementation *2800	0 / 0	(无)
	777	P1420C2 Pokémon Army (hard version) data structures divide and conquer dp greedy implementation *2100	0 / 0	(无)
	773	P1421B Putting Bricks in the Wall constructive algorithms implementation *1100	0 / 0	(无)
	771	P1421D Hexagons brute force constructive algorithms greedy implementation math shortest paths *1900	0 / 0	(无)
	770	P1421E Swedish Heroes brute force dp implementation *2700	0 / 0	(无)
	768	P1422B Nice Matrix greedy implementation math *1300	0 / 0	(无)
	765	P1422E Minlexes dp greedy implementation strings *2700	0 / 0	(无)
	743	P1425E Excitation of Atoms greedy implementation *2200	0 / 0	(无)
	739	P1426A Floor Number implementation math *800	0 / 0	(无)
	738	P1426B Symmetric Matrix implementation *900	0 / 0	(无)
	732	P1427B Chess Cheater greedy implementation sortings *1400	0 / 0	(无)
	730	P1427D Unshuffling a Deck constructive algorithms implementation *2000	0 / 0	(无)
	724	P1428B Belted Rooms graphs implementation *1200	0 / 0	(无)
	722	P1428D Bouncing Boomerangs constructive algorithms greedy implementation *1900	0 / 0	(无)
	715	P1430B Barrels greedy implementation sortings *800	0 / 0	(无)
	714	P1430C Numbers on Whiteboard constructive algorithms data structures greedy implementation math *1000	0 / 0	(无)
	708	P1431B Polycarp and the Language of Gods special problem implementation two pointers 1400	0 / 0	(无)
	707	P1431C Black Friday special problem implementation 1600	0 / 0	(无)
	699	P1433A Boring Apartments implementation math *800	0 / 0	(无)
	698	P1433B Yet Another Bookshelf greedy implementation *800	0 / 0	(无)
	681	P1437E Make It Increasing binary search constructive algorithms data structures dp implementation *2200	0 / 0	(无)
	678	P1438A Specific Tastes of Andre constructive algorithms implementation *800	0 / 0	(无)
	672	P1439A1 Binary Table (Easy Version) constructive algorithms implementation *1500	0 / 0	(无)
	671	P1439A2 Binary Table (Hard Version) constructive algorithms graphs greedy implementation *1900	0 / 0	(无)
	669	P1439C Greedy Shopping binary search data structures divide and conquer greedy implementation *2600	0 / 0	(无)
	666	P1440A Buy the String implementation math *800	0 / 0	(无)
	663	P1442B Identify the Operations combinatorics data structures dsu greedy implementation *1800	0 / 0	(无)
	634	P1450D Rating Compression binary search data structures greedy implementation two pointers *1800	0 / 0	(无)
	629	P1450H2 Multithreading (Hard Version) combinatorics implementation math *3300	0 / 0	(无)
	627	P1451B Non-Substring Subsequence dp greedy implementation strings *900	0 / 0	(无)
	626	P1451C String Equality dp greedy hashing implementation strings *1400	0 / 0	(无)
	614	P1453A Cancel the Trains implementation *800	0 / 0	(无)
	613	P1453B Suffix Operations constructive algorithms implementation *1400	0 / 0	(无)
	612	P1453C Triangles greedy implementation *1700	0 / 0	(无)
	607	P1454B Unique Bid Auction implementation *800	0 / 0	(无)
	606	P1454C Sequence Transformation greedy implementation *1200	0 / 0	(无)
	598	P1455E Four Points brute force constructive algorithms flows geometry greedy implementation math ternary search *2400	0 / 0	(无)
	585	P1461B Find the Spruce brute force dp implementation *1400	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)
	580	P1462A Favorite Sequence implementation two pointers *800	0 / 0	(无)
	579	P1462B Last Year's Substring dp implementation strings *800	0 / 0	(无)
	575	P1462E2 Close Tuples (hard version) binary search combinatorics implementation math sortings two pointers *1700	0 / 0	(无)
	571	P1463C Busy Robot implementation *1800	0 / 0	(无)
	569	P1463E Plan of Lectures constructive algorithms dfs and similar dsu graphs implementation sortings trees *2400	0 / 0	(无)
	556	P1467B Hills And Valleys brute force implementation *1700	0 / 0	(无)
	550	P1468C Berpizza data structures implementation *1400	0 / 0	(无)
	544	P1468I Plane Tiling geometry implementation math *2500	0 / 0	(无)
	542	P1468K The Robot brute force implementation *1600	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)
	536	P1469C Building a Fence dp greedy implementation two pointers *1600	0 / 0	(无)
	528	P1470E Strange Permutation binary search combinatorics data structures dp graphs implementation two pointers *3200	0 / 0	(无)
	525	P1471B Strange List brute force greedy implementation math *1100	0 / 0	(无)
	517	P1473A Replacing Elements greedy implementation math sortings *800	0 / 0	(无)
	514	P1473D Program data structures dp implementation strings *1700	0 / 0	(无)
	508	P1474C Array Destruction brute force constructive algorithms data structures greedy implementation sortings *1700	0 / 0	(无)
	494	P1476D Journey dfs and similar dp dsu implementation *1700	0 / 0	(无)
	482	P1478C Nezzar and Symmetric Array implementation math sortings *1700	0 / 0	(无)
	480	P1479B1 Painting the Array I constructive algorithms data structures dp greedy implementation *1900	0 / 0	(无)
	479	P1479B2 Painting the Array II constructive algorithms data structures dp greedy implementation *2100	0 / 0	(无)
	474	P1480B The Great Hero greedy implementation sortings *900	0 / 0	(无)
	472	P1481B New Colony brute force greedy implementation *1100	0 / 0	(无)
	470	P1481D AB Graph brute force constructive algorithms graphs greedy implementation *2000	0 / 0	(无)
	466	P1482B Restore Modulo implementation math *1500	0 / 0	(无)
	465	P1482C Basic Diplomacy brute force constructive algorithms greedy implementation *1600	0 / 0	(无)
	464	P1482D Playlist data structures dsu implementation shortest paths *1900	0 / 0	(无)
	458	P1485B Replace and Keep Sorted dp implementation math *1200	0 / 0	(无)
	453	P1486A Shifting Stacks greedy implementation *900	0 / 0	(无)
	446	P1487A Arena implementation sortings *800	0 / 0	(无)
	444	P1487C Minimum Ties brute force constructive algorithms dfs and similar graphs greedy implementation math *1500	0 / 0	(无)
	442	P1487E Cheap Dinner brute force data structures graphs greedy implementation sortings two pointers *2000	0 / 0	(无)
	426	P1490D Permutation Transformation dfs and similar divide and conquer implementation *1200	0 / 0	(无)
	422	P1491A K-th Largest Value brute force greedy implementation *800	0 / 0	(无)
	420	P1491C Pekora and Trampoline brute force data structures dp greedy implementation *1700	0 / 0	(无)
	409	P1492E Almost Fault-Tolerant Database brute force constructive algorithms dfs and similar greedy implementation *2500	0 / 0	(无)
	407	P1493B Planet Lapituletti brute force implementation *1300	0 / 0	(无)
	405	P1493D GCD of an Array brute force data structures hashing implementation math number theory sortings two pointers *2100	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)
	400	P1494C 1D Sokoban binary search dp greedy implementation two pointers *1900	0 / 0	(无)
	397	P1494F Delete The Edges brute force constructive algorithms dfs and similar graphs implementation *2900	0 / 0	(无)
	392	P1495E Qingshan and Daniel brute force data structures greedy implementation *3200	0 / 0	(无)
	378	P1498D Bananas in a Microwave dfs and similar dp graphs implementation *2200	0 / 0	(无)
	374	P1499B Binary Removals brute force dp greedy implementation *1000	0 / 0	(无)
	368	P1500A Going Home brute force hashing implementation math *1800	0 / 0	(无)
	362	P1501A Alexey and Train implementation *800	0 / 0	(无)
	361	P1501B Napoleon Cake dp implementation sortings *900	1 / 1	10
	355	P1503F Balance the Cards constructive algorithms data structures divide and conquer geometry graphs implementation *3500	0 / 0	(无)
	353	P1504B Flip the Bits constructive algorithms greedy implementation math *1200	0 / 0	(无)
	352	P1505A Is it rated - 2 special problem implementation interactive 900	0 / 0	(无)
	351	P1505B DMCA special problem implementation number theory 1600	0 / 0	(无)
	350	P1505C Fibonacci Words special problem implementation 1400	0 / 0	(无)
	348	P1505E Cakewalk special problem greedy implementation shortest paths 1800	0 / 0	(无)
	346	P1505G Encoded message special problem implementation 2600	0 / 0	(无)
	342	P1506B Partial Replacement greedy implementation *1100	0 / 0	(无)
	341	P1506C Double-ended Strings brute force implementation strings *1000	0 / 0	(无)
	339	P1506E Restoring the Permutation constructive algorithms implementation *1500	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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