	ID	题目显示标签隐藏标签	AC / 尝试	难度
	394	P1495C Garden of the Sun constructive algorithms graphs *2300	0 / 0	(无)
	393	P1495D BFS Trees combinatorics dfs and similar graphs math shortest paths trees *2600	0 / 0	(无)
	392	P1495E Qingshan and Daniel brute force data structures greedy implementation *3200	0 / 0	(无)
	391	P1495F Squares constructive algorithms data structures dp graphs trees *3300	0 / 0	(无)
	390	P1496A Split it! brute force constructive algorithms greedy strings *900	0 / 0	(无)
	389	P1496B Max and Mex math *1100	0 / 0	(无)
	388	P1497A Meximization brute force data structures greedy sortings *800	0 / 0	(无)
	387	P1497B M-arrays constructive algorithms greedy math *1200	0 / 0	(无)
	386	P1497C1 k-LCM (easy version) constructive algorithms math *1200	0 / 0	(无)
	385	P1497C2 k-LCM (hard version) constructive algorithms math *1600	0 / 0	(无)
	384	P1497D Genius bitmasks dp graphs number theory *2500	0 / 0	(无)
	383	P1497E1 Square-free division (easy version) data structures dp greedy math number theory two pointers *1700	0 / 0	(无)
	382	P1497E2 Square-free division (hard version) data structures dp greedy math number theory two pointers *2500	0 / 0	(无)
	381	P1498A GCD Sum brute force math *800	0 / 0	(无)
	380	P1498B Box Fitting binary search bitmasks data structures greedy *1300	0 / 0	(无)
	379	P1498C Planar Reflections brute force data structures dp *1600	0 / 0	(无)
	378	P1498D Bananas in a Microwave dfs and similar dp graphs implementation *2200	0 / 0	(无)
	377	P1498E Two Houses brute force graphs greedy interactive sortings *2200	0 / 0	(无)
	376	P1498F Christmas Game bitmasks data structures dfs and similar dp games math trees *2500	0 / 0	(无)
	375	P1499A Domino on Windowsill combinatorics constructive algorithms math *800	0 / 0	(无)
	374	P1499B Binary Removals brute force dp greedy implementation *1000	0 / 0	(无)
	373	P1499C Minimum Grid Path brute force data structures greedy math *1500	0 / 0	(无)
	372	P1499D The Number of Pairs dp math number theory *2100	0 / 0	(无)
	371	P1499E Chaotic Merge combinatorics dp math strings *2400	0 / 0	(无)
	370	P1499F Diameter Cuts combinatorics dfs and similar dp trees *2400	0 / 0	(无)
	369	P1499G Graph Coloring data structures graphs interactive *3100	0 / 0	(无)
	368	P1500A Going Home brute force hashing implementation math *1800	0 / 0	(无)
	367	P1500B Two chandeliers binary search brute force chinese remainder theorem math number theory *2200	0 / 0	(无)
	366	P1500C Matrix Sorting bitmasks brute force constructive algorithms greedy two pointers *2600	0 / 0	(无)
	365	P1500D Tiles for Bathroom data structures sortings two pointers *2900	0 / 0	(无)
	364	P1500E Subset Trick binary search data structures *3300	0 / 0	(无)
	363	P1500F Cupboards Jumps dp *3500	0 / 0	(无)
	362	P1501A Alexey and Train implementation *800	0 / 0	(无)
	361	P1501B Napoleon Cake dp implementation sortings *900	1 / 1	10
	360	P1503A Balance the Bits constructive algorithms greedy *1600	0 / 0	(无)
	359	P1503B 3-Coloring constructive algorithms games interactive *1700	0 / 0	(无)
	358	P1503C Travelling Salesman Problem binary search data structures dp greedy shortest paths sortings two pointers *2200	0 / 0	(无)
	357	P1503D Flip the Cards 2-sat constructive algorithms data structures greedy sortings two pointers *2600	0 / 0	(无)
	356	P1503E 2-Coloring combinatorics dp math *3100	0 / 0	(无)
	355	P1503F Balance the Cards constructive algorithms data structures divide and conquer geometry graphs implementation *3500	0 / 0	(无)
	354	P1504A Déjà Vu constructive algorithms strings *800	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)
	349	P1505D Xenolith? Hippodrome? special problem number theory 1800	0 / 0	(无)
	348	P1505E Cakewalk special problem greedy implementation shortest paths 1800	0 / 0	(无)
	347	P1505F Math special problem math 2200	0 / 0	(无)
	346	P1505G Encoded message special problem implementation 2600	0 / 0	(无)
	345	P1505H L BREAK into program special problem 2500	0 / 0	(无)
	344	P1505I Mysterious language again, seriously? special problem 2200	0 / 0	(无)
	343	P1506A Strange Table math *800	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)
	340	P1506D Epic Transformation constructive algorithms data structures greedy *1400	0 / 0	(无)
	339	P1506E Restoring the Permutation constructive algorithms implementation *1500	0 / 0	(无)
	338	P1506F Triangular Paths constructive algorithms graphs math shortest paths sortings *2000	0 / 0	(无)
	337	P1506G Maximize the Remaining String brute force data structures dp greedy strings *2000	0 / 0	(无)
	336	P1508A Binary Literature constructive algorithms greedy implementation strings two pointers *1900	0 / 0	(无)
	335	P1508B Almost Sorted binary search combinatorics constructive algorithms implementation *1800	0 / 0	(无)
	334	P1508C Complete the MST bitmasks brute force data structures dfs and similar dsu graphs greedy trees *2500	0 / 0	(无)
	333	P1508D Swap Pass constructive algorithms geometry sortings *3000	0 / 0	(无)
	332	P1508E Tree Calendar brute force constructive algorithms data structures dfs and similar sortings trees *3100	0 / 0	(无)
	331	P1508F Optimal Encoding brute force data structures *3500	0 / 0	(无)
	330	P1509A Average Height constructive algorithms *800	0 / 0	(无)
	329	P1509B TMT Document greedy *1100	0 / 0	(无)
	328	P1509C The Sports Festival dp greedy *1800	0 / 0	(无)
	327	P1510A __NO_TITLE__	0 / 0	(无)
	326	P1510B Button Lock flows graph matchings graphs *2600	0 / 0	(无)
	325	P1510C Cactus Not Enough dfs and similar graph matchings graphs *2900	0 / 0	(无)
	324	P1510D Digits dp math number theory *2100	0 / 0	(无)
	323	P1510E __NO_TITLE__	0 / 0	(无)
	322	P1510F Fiber Shape *2800	0 / 0	(无)
	321	P1510G __NO_TITLE__	0 / 0	(无)
	320	P1510H Hard Optimization dp *3200	0 / 0	(无)
	319	P1510I Is It Rated? greedy interactive math probabilities *2700	0 / 0	(无)
	318	P1510J Japanese Game constructive algorithms math *2700	0 / 0	(无)
	317	P1510K King's Task brute force graphs implementation *1200	0 / 0	(无)
	316	P1511A Review Site greedy *800	0 / 0	(无)
	315	P1511B GCD Length constructive algorithms math number theory *1100	0 / 0	(无)
	314	P1511C Yet Another Card Deck brute force data structures implementation trees *1100	0 / 0	(无)
	313	P1511D Min Cost String brute force constructive algorithms graphs greedy strings *1600	0 / 0	(无)
	312	P1511E Colorings and Dominoes combinatorics dp greedy math *2100	0 / 0	(无)
	311	P1511F Chainword brute force data structures dp matrices string suffix structures strings *2700	0 / 0	(无)
	310	P1511G Chips on a Board bitmasks brute force data structures dp games two pointers *2700	0 / 0	(无)
	309	P1512A Spy Detected! brute force implementation *800	0 / 0	(无)
	308	P1512B Almost Rectangle implementation *800	0 / 0	(无)
	307	P1512C A-B Palindrome constructive algorithms implementation strings *1200	0 / 0	(无)
	306	P1512D Corrupted Array constructive algorithms data structures greedy *1200	0 / 0	(无)
	305	P1512E Permutation by Sum brute force greedy math *1600	0 / 0	(无)
	304	P1512F Education brute force dp greedy implementation *1900	0 / 0	(无)
	303	P1512G Short Task brute force dp math number theory *1700	0 / 0	(无)
	302	P1513A Array and Peaks constructive algorithms implementation *800	0 / 0	(无)
	301	P1513B AND Sequences bitmasks combinatorics constructive algorithms math *1400	0 / 0	(无)
	300	P1513C Add One dp matrices *1600	0 / 0	(无)
	299	P1513D GCD and MST constructive algorithms dsu graphs greedy number theory sortings *2000	0 / 0	(无)
	298	P1513E Cost Equilibrium combinatorics constructive algorithms math sortings *2300	0 / 0	(无)
	297	P1513F Swapping Problem brute force constructive algorithms data structures sortings *2500	0 / 0	(无)
	296	P1514A Perfectly Imperfect Array math number theory *800	0 / 0	(无)
	295	P1514B AND 0, Sum Big bitmasks combinatorics math *1200	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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