	ID	题目显示标签隐藏标签	AC / 尝试	难度
	1807	P1214E Petya and Construction Set constructive algorithms graphs math sortings trees *2000	0 / 0	(无)
	1804	P1214H Tiles Placement constructive algorithms dfs and similar trees *2800	0 / 0	(无)
	1785	P1217F Forced Online Queries Problem data structures divide and conquer dsu graphs trees *2600	0 / 0	(无)
	1769	P1220E Tourism dfs and similar dp dsu graphs greedy trees *2200	0 / 0	(无)
	1755	P1223E Paint the Tree dp sortings trees *2100	0 / 0	(无)
	1746	P1225F Tree Factory constructive algorithms greedy trees *2500	0 / 0	(无)
	1730	P1228F One Node is Gone constructive algorithms implementation trees *2500	0 / 0	(无)
	1698	P1238F The Maximum Subtree dfs and similar dp graphs trees *2200	0 / 0	(无)
	1678	P1244D Paint the Tree brute force constructive algorithms dp graphs implementation trees *1800	0 / 0	(无)
	1671	P1245D Shichikuji and Power Grid dsu graphs greedy shortest paths trees *1900	0 / 0	(无)
	1656	P1249F Maximum Weight Subset dp trees *2200	0 / 0	(无)
	1633	P1252B Cleaning Robots dp trees *2300	0 / 0	(无)
	1631	P1252D Find String in a Grid data structures dp strings trees *3000	0 / 0	(无)
	1629	P1252F Regular Forestation hashing trees *2400	0 / 0	(无)
	1617	P1253F Cheap Robot binary search dsu graphs shortest paths trees *2500	0 / 0	(无)
	1612	P1254D Tree Queries data structures probabilities trees *2700	0 / 0	(无)
	1611	P1254E Send Tree to Charlie combinatorics dfs and similar dsu trees *3300	0 / 0	(无)
	1589	P1260F Colored Tree data structures trees *2700	0 / 0	(无)
	1582	P1263F Economic Difficulties data structures dfs and similar dp flows graphs trees *2400	0 / 0	(无)
	1512	P1276D Tree Elimination dp trees *2900	0 / 0	(无)
	1503	P1278D Segment Tree data structures dsu graphs trees *2100	0 / 0	(无)
	1502	P1278E Tests for problem D constructive algorithms dfs and similar divide and conquer trees *2200	0 / 0	(无)
	1492	P1280C Jeremy Bearimy dfs and similar graphs greedy trees *2000	0 / 0	(无)
	1491	P1280D Miss Punyverse dp greedy trees *2500	0 / 0	(无)
	1475	P1283F DIY Garland constructive algorithms greedy trees *2200	0 / 0	(无)
	1469	P1284F New Year and Social Network data structures graph matchings graphs math trees *3200	0 / 0	(无)
	1464	P1285D Dr bitmasks brute force dfs and similar divide and conquer dp greedy strings trees *1900	0 / 0	(无)
	1463	P1285E Delete a Segment brute force constructive algorithms data structures dp graphs sortings trees two pointers *2300	0 / 0	(无)
	1460	P1286B Numbers on Tree constructive algorithms data structures dfs and similar graphs greedy trees *1800	0 / 0	(无)
	1435	P1292C Xenon's Attack on the Gangs combinatorics dfs and similar dp greedy trees *2300	0 / 0	(无)
	1434	P1292D Chaotic V. dp graphs greedy math number theory trees *2700	0 / 0	(无)
	1424	P1294F Three Paths on a Tree dfs and similar dp greedy trees *2000	0 / 0	(无)
	1411	P1296F Berland Beauty constructive algorithms dfs and similar greedy sortings trees *2100	0 / 0	(无)
	1406	P1297E Modernization of Treeland *special problem dfs and similar trees	0 / 0	(无)
	1398	P1299D Around the World bitmasks combinatorics dfs and similar dp graphs graphs math trees *3000	0 / 0	(无)
	1372	P1303G Sum of Prefix Sums data structures divide and conquer geometry trees *2700	0 / 0	(无)
	1367	P1304E 1-Trees and Queries data structures dfs and similar shortest paths trees *2000	0 / 0	(无)
	1361	P1305D Kuroni and the Celebration constructive algorithms dfs and similar interactive trees *1900	0 / 0	(无)
	1351	P1307F Cow and Vacation dfs and similar dsu trees *3300	0 / 0	(无)
	1339	P1311E Construct the Binary Tree brute force constructive algorithms trees *2200	0 / 0	(无)
	1311	P1320E Treeland and Viruses data structures dfs and similar dp shortest paths trees *3000	0 / 0	(无)
	1302	P1322F Assigning Fares dp trees *3500	0 / 0	(无)
	1294	P1324F Maximum White Subtree dfs and similar dp graphs trees *1800	0 / 0	(无)
	1291	P1325C Ehab and Path-etic MEXs constructive algorithms dfs and similar greedy trees *1500	0 / 0	(无)
	1279	P1326G Spiderweb Trees dp geometry trees *3500	0 / 0	(无)
	1267	P1328E Tree Queries dfs and similar graphs trees *1900	0 / 0	(无)
	1245	P1332F Independent Set dfs and similar dp trees *2500	0 / 0	(无)
	1223	P1336A Linova and Kingdom dfs and similar dp greedy sortings trees *1600	0 / 0	(无)
	1217	P1336F Journey data structures divide and conquer graphs trees *3500	0 / 0	(无)
	1213	P1338B Edge Weight Assignment bitmasks constructive algorithms dfs and similar greedy math trees *1800	0 / 0	(无)
	1211	P1338D Nested Rubber Bands constructive algorithms dfs and similar dp math trees *2700	0 / 0	(无)
	1204	P1340D Nastya and Time Machine constructive algorithms dfs and similar graphs trees *2600	0 / 0	(无)
	1183	P1344E Train Tracks data structures trees *3100	0 / 0	(无)
	1074	P1361D Johnny and James greedy implementation math trees *2900	0 / 0	(无)
	1073	P1361E James and the Chase dfs and similar graphs probabilities trees *3000	0 / 0	(无)
	1066	P1363C Game On Leaves games trees *1600	0 / 0	(无)
	1064	P1363E Tree Shuffling dfs and similar dp greedy trees *2000	0 / 0	(无)
	1059	P1364D Ehab's Last Corollary constructive algorithms dfs and similar graphs greedy implementation trees *2100	0 / 0	(无)
	1030	P1368G Shifting Dominoes data structures geometry graphs trees *3200	0 / 0	(无)
	1024	P1369D TediousLee dp graphs greedy math trees *1900	0 / 0	(无)
	1016	P1370F1 The Hidden Pair (Easy Version) binary search dfs and similar graphs interactive shortest paths trees *2400	0 / 0	(无)
	1015	P1370F2 The Hidden Pair (Hard Version) binary search dfs and similar graphs interactive shortest paths trees *2700	0 / 0	(无)
	981	P1375G Tree Modification brute force constructive algorithms dfs and similar graph matchings graphs trees *2800	0 / 0	(无)
	974	P1379E Inverse Genealogy constructive algorithms divide and conquer dp math trees *2800	0 / 0	(无)
	967	P1380E Merging Towers data structures dsu implementation trees *2300	0 / 0	(无)
	960	P1381D The Majestic Brown Tree Snake dfs and similar dp greedy trees two pointers *3000	0 / 0	(无)
	956	P1383A String Transformation 1 dsu graphs greedy sortings strings trees two pointers *1700	0 / 0	(无)
	954	P1383C String Transformation 2 bitmasks dp graphs trees *3100	0 / 0	(无)
	942	P1385F Removing Leaves data structures greedy implementation trees *2300	0 / 0	(无)
	936	P1387B1 Village (Minimum) special problem dp greedy trees 2100	0 / 0	(无)
	935	P1387B2 Village (Maximum) special problem dfs and similar trees 2500	0 / 0	(无)
	931	P1388C Uncle Bogdan and Country Happiness dfs and similar greedy math trees *1800	0 / 0	(无)
	930	P1388D Captain Flint and Treasure data structures dfs and similar graphs greedy implementation trees *2000	0 / 0	(无)
	922	P1389G Directing Edges dfs and similar dp graphs trees *2800	0 / 0	(无)
	917	P1391E Pairs of Pairs constructive algorithms dfs and similar graphs greedy trees *2600	0 / 0	(无)
	898	P1394D Boboniu and Jianghu dp greedy sortings trees *2800	0 / 0	(无)
	889	P1396E Distance Matching constructive algorithms dfs and similar trees *3200	0 / 0	(无)
	875	P1399E1 Weights Division (easy version) data structures dfs and similar greedy trees *2000	0 / 0	(无)
	874	P1399E2 Weights Division (hard version) binary search dfs and similar greedy sortings trees two pointers *2200	0 / 0	(无)
	862	P1401D Maximum Distributed Tree dfs and similar dp greedy implementation math number theory sortings trees *1800	0 / 0	(无)
	857	P1402C Star Trek special problem combinatorics dfs and similar dp games graphs matrices trees 2600	0 / 0	(无)
	855	P1403B Spring cleaning special problem data structures dfs and similar graphs trees 2300	0 / 0	(无)
	852	P1404B Tree Tag dfs and similar dp games trees *1900	0 / 0	(无)
	844	P1406C Link Cut Centroids constructive algorithms dfs and similar graphs trees *1700	0 / 0	(无)
	832	P1408E Avoid Rainbow Cycles data structures dsu graphs greedy sortings trees *2400	0 / 0	(无)
	830	P1408G Clusterization Counting combinatorics dp dsu fft graphs trees *2700	0 / 0	(无)
	809	P1413F Roads and Ramen data structures trees *2800	0 / 0	(无)
	800	P1416C XOR Inverse bitmasks data structures divide and conquer dp greedy math sortings strings trees *2000	0 / 0	(无)
	799	P1416D Graph and Queries data structures dsu graphs implementation trees *2600	0 / 0	(无)
	761	P1423C Dušan's Railway divide and conquer graphs trees *3500	0 / 0	(无)
	728	P1427F Boring Card Game data structures greedy trees *3200	0 / 0	(无)
	688	P1436D Bandit in a City binary search dfs and similar graphs greedy trees *1900	0 / 0	(无)
	682	P1437D Minimal Height Tree graphs greedy shortest paths trees *1600	0 / 0	(无)
	679	P1437G Death DBMS data structures string suffix structures strings trees *2600	0 / 0	(无)
	673	P1438F Olha and Igor interactive probabilities trees *3000	0 / 0	(无)
	667	P1439E Cheat and Win bitmasks data structures games trees *3500	0 / 0	(无)
	660	P1442E Black, White and Grey Tree binary search constructive algorithms dfs and similar dp greedy trees *3000	0 / 0	(无)
	650	P1444E Finding the Vertex brute force dfs and similar dp interactive trees *3500	0 / 0	(无)
	645	P1446C Xor Tree binary search bitmasks data structures divide and conquer dp trees *2100	0 / 0	(无)
	631	P1450G Communism bitmasks dp trees *3500	0 / 0	(无)

HGNU

根据当前过滤条件随机选择一道题

状态

支持

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

Worker 0, 123ms
Powered by Hydro v4.13.4
Modified by HGNU ACM TEAM (Repo Link)