ID	题目显示标签隐藏标签	AC / 尝试	难度
1314	P1625E1 Cats on the Upgrade (easy version) brute force data structures dfs and similar divide and conquer dp graphs trees *2500	0 / 0	NOI
1313	P1625E2 Cats on the Upgrade (hard version) binary search data structures dfs and similar graphs trees *2800	0 / 0	CTSC
1301	P1627F Not Splitting geometry graphs greedy implementation shortest paths *2700	0 / 0	CTSC
1286	P1630F Making It Bipartite flows graph matchings graphs number theory *3400	0 / 0	CTSC
1279	P1632E1 Distance Tree (easy version) binary search data structures dfs and similar graphs shortest paths trees *2400	0 / 0	NOI
1273	P1633E Spanning Tree Queries binary search data structures dfs and similar dsu graphs greedy math sortings trees *2400	0 / 0	NOI
1267	P1634E Fair Share constructive algorithms data structures dfs and similar graph matchings graphs *2400	0 / 0	NOI
1261	P1635E Cars 2-sat constructive algorithms dfs and similar dsu graphs greedy sortings *2200	0 / 0	省选
1249	P1638C Inversion Graph data structures dsu graphs math *1300	0 / 0	普及-
1245	P1639A Treasure Hunt graphs interactive	0 / 0	暂无评定
1244	P1639B Treasure Hunt graphs interactive	0 / 0	暂无评定
1243	P1639C Treasure Hunt graphs interactive	0 / 0	暂无评定
1242	P1639D Treasure Hunt graphs interactive	0 / 0	暂无评定
1241	P1639E Treasure Hunt graphs interactive	0 / 0	暂无评定
1240	P1639F Treasure Hunt graphs interactive	0 / 0	暂无评定
1239	P1639G Treasure Hunt graphs interactive	0 / 0	暂无评定
1238	P1639H Treasure Hunt graphs interactive	0 / 0	暂无评定
1237	P1639I Treasure Hunt graphs interactive	0 / 0	暂无评定
1236	P1639J Treasure Hunt graphs interactive	0 / 0	暂无评定
1235	P1639K Treasure Hunt graphs interactive	0 / 0	暂无评定
1213	P1647B Madoka and the Elegant Gift brute force constructive algorithms graphs implementation *1200	0 / 0	普及-
1204	P1648E Air Reform data structures dfs and similar divide and conquer dsu graphs implementation trees *3200	0 / 0	CTSC
1203	P1648F Two Avenues data structures dfs and similar graphs *3500	0 / 0	CTSC
1194	P1650G Counting Shortcuts data structures dfs and similar dp graphs shortest paths *2100	0 / 0	提高
1190	P1651D Nearest Excluded Points binary search data structures dfs and similar graphs shortest paths *1900	0 / 0	普及
1183	P1654E Arithmetic Operations brute force data structures graphs math *2300	0 / 0	省选
1181	P1654G Snowy Mountain data structures dfs and similar graphs greedy shortest paths trees *2900	0 / 0	CTSC
1174	P1656F Parametric MST binary search constructive algorithms graphs greedy math sortings *2600	0 / 0	CTSC
1173	P1656G Cycle Palindrome constructive algorithms graphs math *3200	0 / 0	CTSC
1171	P1656I Neighbour Ordering constructive algorithms graphs *3500	0 / 0	CTSC
1165	P1657F Words on Tree 2-sat dfs and similar dsu graphs trees *2600	0 / 0	CTSC
1153	P1659E AND-MEX Walk bitmasks brute force constructive algorithms dfs and similar dsu graphs *2200	0 / 0	省选
1152	P1659F Tree and Permutation Game dfs and similar games graphs trees *3000	0 / 0	CTSC
1143	P1661B Getting Zero bitmasks brute force dfs and similar dp graphs greedy shortest paths *1300	0 / 0	普及-
1136	P1662C European Trip dp graphs math matrices	0 / 0	暂无评定
1133	P1662F Antennas data structures dfs and similar graphs graphs implementation implementation shortest paths shortest paths	0 / 0	暂无评定
1129	P1662J Training Camp flows graphs	0 / 0	暂无评定
1124	P1662O Circular Maze brute force dfs and similar graphs implementation	0 / 0	暂无评定
1099	P1666L Labyrinth dfs and similar graphs *1800	0 / 0	普及
1080	P1670C Where is the Pizza? data structures dfs and similar dsu graphs implementation math *1400	0 / 0	普及-
1065	P1672F1 Array Shuffling constructive algorithms graphs greedy *2000	0 / 0	提高
1064	P1672F2 Checker for Array Shuffling constructive algorithms dfs and similar graphs *2800	0 / 0	CTSC
1063	P1672G Cross Xor constructive algorithms graphs math matrices *3200	0 / 0	CTSC
1048	P1674G Remove Directed Edges dfs and similar dp graphs *2000	0 / 0	提高
1044	P1675D Vertical Paths graphs implementation trees *1300	0 / 0	普及-
1034	P1676G White-Black Balanced Subtrees dfs and similar dp graphs trees *1300	0 / 0	普及-
1029	P1677C Tokitsukaze and Two Colorful Tapes constructive algorithms dfs and similar graphs greedy *1900	0 / 0	普及
1019	P1679D Toss a Coin to Your Graph... binary search dfs and similar dp graphs *1900	0 / 0	普及
1011	P1680F Lenient Vertex Cover dfs and similar divide and conquer dsu graphs trees *2600	0 / 0	CTSC
1000	P1682E Unordered Swaps constructive algorithms dfs and similar graphs greedy math sortings trees *2700	0 / 0	CTSC
999	P1682F MCMF? data structures flows graphs greedy sortings two pointers *2700	0 / 0	CTSC
981	P1687B Railway System constructive algorithms graphs greedy interactive sortings *1700	0 / 0	普及
969	P1689E ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs *2500	0 / 0	NOI
963	P1690F Shifting String graphs math number theory strings *1700	0 / 0	普及
957	P1691E Number of Groups data structures dfs and similar dsu graphs greedy sortings *2300	0 / 0	省选
945	P1693C Keshi in Search of AmShZ graphs greedy shortest paths *2300	0 / 0	省选
937	P1695C Zero Path brute force data structures dp graphs greedy shortest paths *1700	0 / 0	普及
934	P1695E Ambiguous Dominoes constructive algorithms dfs and similar graphs *2700	0 / 0	CTSC
928	P1696F Tree Recovery brute force constructive algorithms dfs and similar dsu graphs trees *2600	0 / 0	CTSC
921	P1697E Coloring brute force combinatorics constructive algorithms dp geometry graphs greedy implementation math *2400	0 / 0	NOI
920	P1697F Too Many Constraints 2-sat constructive algorithms graphs implementation *2800	0 / 0	CTSC
914	P1698F Equal Reversal constructive algorithms graphs implementation math *2800	0 / 0	CTSC
891	P1702E Split Into Two Sets dfs and similar dsu graphs *1600	0 / 0	普及
876	P1704E Count Seconds brute force constructive algorithms dp graphs implementation math *2200	0 / 0	省选
857	P1707C DFS Trees dfs and similar dsu graphs greedy sortings trees *2400	0 / 0	NOI
846	P1709F Multiset of Strings bitmasks brute force dp fft flows graphs math meet-in-the-middle trees *2500	0 / 0	NOI
839	P1711B Party brute force graphs *1300	0 / 0	普及-
815	P1715D 2+ doors 2-sat bitmasks graphs greedy *1900	0 / 0	普及
814	P1715E Long Way Home data structures divide and conquer dp geometry graphs greedy shortest paths *2400	0 / 0	NOI
801	P1717F Madoka and The First Session constructive algorithms flows graph matchings graphs implementation *2500	0 / 0	NOI
795	P1718E Impressionism constructive algorithms graphs implementation math *3500	0 / 0	CTSC
779	P1721F Matching Reduction brute force constructive algorithms dfs and similar flows graph matchings graphs interactive *2800	0 / 0	CTSC
759	P1725M Moving Both Hands dp graphs shortest paths *1800	0 / 0	普及
756	P1726C Jatayu's Balanced Bracket Sequence data structures dsu graphs greedy *1300	0 / 0	普及-
755	P1726D Edge Split brute force constructive algorithms dfs and similar dsu graphs probabilities trees *2000	0 / 0	提高
703	P1735C Phase Shift dfs and similar dsu graphs greedy implementation strings *1400	0 / 0	普及-
690	P1737D Ela and the Wiring Wizard brute force dp graphs greedy implementation shortest paths *2200	0 / 0	省选
683	P1738D Permutation Addicts constructive algorithms data structures dfs and similar dsu graphs trees *1900	0 / 0	普及
681	P1738F Connectivity Addicts constructive algorithms dsu graphs greedy interactive shortest paths trees *2400	0 / 0	NOI
675	P1739D Reset K Edges binary search data structures dfs and similar graphs greedy trees *1900	0 / 0	普及
664	P1740I Arranging Crystal Balls data structures divide and conquer divide and conquer dp geometry graphs number theory *3500	0 / 0	CTSC
660	P1741D Masha and a Beautiful Tree dfs and similar divide and conquer graphs sortings trees *1300	0 / 0	普及-
657	P1741G Kirill and Company bitmasks brute force dfs and similar dp flows graphs shortest paths *2200	0 / 0	省选
612	P1749E Cactus Wall constructive algorithms dfs and similar graphs shortest paths *2400	0 / 0	NOI
598	P1753D The Beach constructive algorithms dfs and similar graphs shortest paths *2400	0 / 0	NOI
589	P1758E Tick, Tock combinatorics dfs and similar dsu graphs *2500	0 / 0	NOI
574	P1760G SlavicG's Favorite Problem bitmasks dfs and similar graphs *1700	0 / 0	普及
571	P1761C Set Construction constructive algorithms dfs and similar graphs greedy *1400	0 / 0	普及-
569	P1761E Make It Connected binary search brute force constructive algorithms dsu graphs greedy matrices trees two pointers *2400	0 / 0	NOI
554	P1763E Node Pairs dp graphs math number theory *2200	0 / 0	省选
553	P1763F Edge Queries data structures dfs and similar dp dsu graphs trees *3000	0 / 0	CTSC
550	P1764C Doremy's City Construction graphs greedy *1400	0 / 0	普及-
535	P1765H Hospital Queue binary search graphs greedy implementation *2200	0 / 0	省选
518	P1767E Algebra Flash bitmasks brute force dp graphs math meet-in-the-middle trees *2500	0 / 0	NOI
513	P1768D Lucky Permutation constructive algorithms dfs and similar graphs greedy *1800	0 / 0	普及
507	P1770D Koxia and Game constructive algorithms data structures dfs and similar dsu flows games graph matchings graphs implementation *2000	0 / 0	提高
404	P1775D Friendly Spiders dfs and similar graphs math number theory shortest paths *1800	0 / 0	普及
396	P1776F Train Splitting constructive algorithms graphs greedy *1700	0 / 0	普及
392	P1776J Italian Data Centers graphs shortest paths *2500	0 / 0	NOI
383	P1777E Edge Reverse binary search dfs and similar graphs trees *2200	0 / 0	省选

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