ID	题目显示标签隐藏标签	AC / 尝试	难度
2068	P1487B Cat Cycle math number theory *1200	0 / 0	普及-
2067	P1487C Minimum Ties brute force constructive algorithms dfs and similar graphs greedy implementation math *1500	0 / 0	普及
2066	P1487D Pythagorean Triples binary search brute force math number theory *1500	0 / 0	普及
2065	P1487E Cheap Dinner brute force data structures graphs greedy implementation sortings two pointers *2000	0 / 0	提高
2064	P1487F Ones dp greedy shortest paths *2900	0 / 0	CTSC
2063	P1487G String Counting combinatorics dp fft math *2700	0 / 0	CTSC
2062	P1488A From Zero To Y special problem math 900	0 / 0	普及-
2061	P1488B RBS Deletion special problem greedy 1800	0 / 0	普及
2060	P1488C Two Policemen special problem binary search brute force math 1900	0 / 0	普及
2059	P1488D Problemsolving Marathon special problem binary search greedy 1900	0 / 0	普及
2058	P1488E Palindromic Doubles special problem data structures dp 2200	0 / 0	省选
2057	P1488F Dogecoin special problem special problem binary search data structures *2300	0 / 0	省选
2056	P1488G Painting Numbers special problem data structures greedy number theory 2500	0 / 0	NOI
2055	P1488H Build From Suffixes special problem combinatorics data structures 2800	0 / 0	CTSC
2054	P1488I Demonic Invasion special problem flows 3100	0 / 0	CTSC
2053	P1488J Flower Shop special problem data structures fft math 3100	0 / 0	CTSC
2052	P1490A Dense Array greedy math *800	0 / 0	普及-
2051	P1490B Balanced Remainders brute force constructive algorithms math *1000	0 / 0	普及-
2050	P1490C Sum of Cubes binary search brute force brute force math *1100	0 / 0	普及-
2049	P1490D Permutation Transformation dfs and similar divide and conquer implementation *1200	0 / 0	普及-
2048	P1490E Accidental Victory binary search data structures greedy *1400	0 / 0	普及-
2047	P1490F Equalize the Array binary search data structures greedy math sortings *1500	0 / 0	普及
2046	P1490G Old Floppy Drive binary search data structures math *1900	0 / 0	普及
2045	P1491A K-th Largest Value brute force greedy implementation *800	0 / 0	普及-
2044	P1491B Minimal Cost brute force math *1200	0 / 0	普及-
2043	P1491C Pekora and Trampoline brute force data structures dp greedy implementation *1700	0 / 0	普及
2042	P1491D Zookeeper and The Infinite Zoo bitmasks constructive algorithms dp greedy math *1800	0 / 0	普及
2041	P1491E Fib-tree brute force dfs and similar divide and conquer number theory trees *2400	0 / 0	NOI
2040	P1491F Magnets binary search constructive algorithms interactive *2700	0 / 0	CTSC
2039	P1491G Switch and Flip constructive algorithms graphs math *2800	0 / 0	CTSC
2038	P1491H Yuezheng Ling and Dynamic Tree data structures trees *3400	0 / 0	CTSC
2037	P1491I Ruler Of The Zoo brute force data structures *3500	0 / 0	CTSC
2036	P1492A Three swimmers math *800	0 / 0	普及-
2035	P1492B Card Deck data structures greedy math *1100	0 / 0	普及-
2034	P1492C Maximum width binary search data structures dp greedy two pointers *1500	0 / 0	普及
2033	P1492D Genius's Gambit bitmasks constructive algorithms greedy math *1900	0 / 0	普及
2032	P1492E Almost Fault-Tolerant Database brute force constructive algorithms dfs and similar greedy implementation *2500	0 / 0	NOI
2031	P1493A Anti-knapsack constructive algorithms greedy *800	0 / 0	普及-
2030	P1493B Planet Lapituletti brute force implementation *1300	0 / 0	普及-
2029	P1493C K-beautiful Strings binary search brute force constructive algorithms greedy strings *2000	0 / 0	提高
2028	P1493D GCD of an Array brute force data structures hashing implementation math number theory sortings two pointers *2100	0 / 0	提高
2027	P1493E Enormous XOR bitmasks constructive algorithms greedy math strings two pointers *2600	0 / 0	CTSC
2026	P1493F Enchanted Matrix bitmasks interactive number theory *2600	0 / 0	CTSC
2025	P1494A ABC String bitmasks brute force implementation *900	0 / 0	普及-
2024	P1494B Berland Crossword bitmasks brute force greedy implementation *1400	0 / 0	普及-
2023	P1494C 1D Sokoban binary search dp greedy implementation two pointers *1900	0 / 0	普及
2022	P1494D Dogeforces constructive algorithms data structures dfs and similar divide and conquer dsu greedy sortings trees *2300	0 / 0	省选
2021	P1494E A-Z Graph constructive algorithms data structures graphs hashing *2400	0 / 0	NOI
2020	P1494F Delete The Edges brute force constructive algorithms dfs and similar graphs implementation *2900	0 / 0	CTSC
2019	P1495A Diamond Miner geometry greedy math sortings *1200	0 / 0	普及-
2018	P1495B Let's Go Hiking games greedy *1900	0 / 0	普及
2017	P1495C Garden of the Sun constructive algorithms graphs *2300	0 / 0	省选
2016	P1495D BFS Trees combinatorics dfs and similar graphs math shortest paths trees *2600	0 / 0	CTSC
2015	P1495E Qingshan and Daniel brute force data structures greedy implementation *3200	0 / 0	CTSC
2014	P1495F Squares constructive algorithms data structures dp graphs trees *3300	0 / 0	CTSC
2013	P1496A Split it! brute force constructive algorithms greedy strings *900	0 / 0	普及-
2012	P1496B Max and Mex math *1100	0 / 0	普及-
2011	P1497A Meximization brute force data structures greedy sortings *800	0 / 0	普及-
2010	P1497B M-arrays constructive algorithms greedy math *1200	0 / 0	普及-
2009	P1497C1 k-LCM (easy version) constructive algorithms math *1200	0 / 0	普及-
2008	P1497C2 k-LCM (hard version) constructive algorithms math *1600	0 / 0	普及
2007	P1497D Genius bitmasks dp graphs number theory *2500	0 / 0	NOI
2006	P1497E1 Square-Free Division (easy version) data structures dp greedy math number theory two pointers *1700	0 / 0	普及
2005	P1497E2 Square-Free Division (hard version) data structures dp greedy math number theory two pointers *2500	0 / 0	NOI
2004	P1498A GCD Sum brute force math *800	0 / 0	普及-
2003	P1498B Box Fitting binary search bitmasks data structures greedy *1300	0 / 0	普及-
2002	P1498C Planar Reflections brute force data structures dp *1600	0 / 0	普及
2001	P1498D Bananas in a Microwave dfs and similar dp graphs implementation *2200	0 / 0	省选
2000	P1498E Two Houses brute force graphs greedy interactive sortings *2200	0 / 0	省选
1999	P1498F Christmas Game bitmasks data structures dfs and similar dp games math trees *2500	0 / 0	NOI
1998	P1499A Domino on Windowsill combinatorics constructive algorithms math *800	0 / 0	普及-
1997	P1499B Binary Removals brute force dp greedy implementation *1000	0 / 0	普及-
1996	P1499C Minimum Grid Path brute force data structures greedy math *1500	0 / 0	普及
1995	P1499D The Number of Pairs dp math number theory *2100	0 / 0	提高
1994	P1499E Chaotic Merge combinatorics dp math strings *2400	0 / 0	NOI
1993	P1499F Diameter Cuts combinatorics dfs and similar dp trees *2400	0 / 0	NOI
1992	P1499G Graph Coloring data structures graphs interactive *3100	0 / 0	CTSC
1991	P1500A Going Home brute force hashing implementation math *1800	0 / 0	普及
1990	P1500B Two chandeliers binary search brute force chinese remainder theorem math number theory *2200	0 / 0	省选
1989	P1500C Matrix Sorting bitmasks brute force constructive algorithms greedy two pointers *2600	0 / 0	CTSC
1988	P1500D Tiles for Bathroom data structures sortings two pointers *2900	0 / 0	CTSC
1987	P1500E Subset Trick binary search data structures *3300	0 / 0	CTSC
1986	P1500F Cupboards Jumps dp *3500	0 / 0	CTSC
1985	P1501A Alexey and Train implementation *800	0 / 0	普及-
1984	P1501B Napoleon Cake dp implementation sortings *900	0 / 0	普及-
1983	P1503A Balance the Bits constructive algorithms greedy *1600	0 / 0	普及
1982	P1503B 3-Coloring constructive algorithms games interactive *1700	0 / 0	普及
1981	P1503C Travelling Salesman Problem binary search data structures dp greedy shortest paths sortings two pointers *2200	0 / 0	省选
1980	P1503D Flip the Cards 2-sat constructive algorithms data structures greedy sortings two pointers *2600	0 / 0	CTSC
1979	P1503E 2-Coloring combinatorics dp math *3100	0 / 0	CTSC
1978	P1503F Balance the Cards constructive algorithms data structures divide and conquer geometry graphs implementation *3500	0 / 0	CTSC
1977	P1504A Déjà Vu constructive algorithms strings *800	0 / 0	普及-
1976	P1504B Flip the Bits constructive algorithms greedy implementation math *1200	0 / 0	普及-
1975	P1505A Is it rated - 2 special problem implementation interactive 900	0 / 0	普及-
1974	P1505B DMCA special problem implementation number theory 1600	0 / 0	普及
1973	P1505C Fibonacci Words special problem implementation 1400	0 / 0	普及-
1972	P1505D Xenolith? Hippodrome? special problem number theory 1800	0 / 0	普及
1971	P1505E Cakewalk special problem greedy implementation shortest paths 1800	0 / 0	普及
1970	P1505F Math special problem math 2200	0 / 0	省选
1969	P1505G Encoded message special problem implementation 2600	0 / 0	CTSC

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