combinatorics - 题库 - CZOJ

	ID	题目显示标签隐藏标签	AC / 尝试	难度
	892	P1641E Special Positions combinatorics divide and conquer fft math *3300	0 / 0	10
	884	P1644E Expand the Path brute force combinatorics data structures implementation math *1900	0 / 0	省选/NOI-
	883	P1644F Basis combinatorics fft math number theory *2900	0 / 0	10
	870	P1648A Weird Sum combinatorics data structures geometry math matrices sortings *1400	0 / 0	普及+/提高
	868	P1648C Tyler and Strings combinatorics data structures implementation *1900	0 / 0	省选/NOI-
	851	P1651E Sum of Matchings brute force combinatorics constructive algorithms dfs and similar graph matchings greedy math *2600	0 / 0	10
	842	P1654H Three Minimums combinatorics constructive algorithms divide and conquer dp fft math *3500	0 / 0	10
	828	P1657E Star MST combinatorics dp graph matchings math *2200	0 / 0	8
	825	P1658B Marin and Anti-coprime Permutation combinatorics math number theory *800	0 / 0	普及/提高-
	787	P1662N Drone Photo combinatorics math sortings	0 / 0	暂无评定
	782	P1663D Is it rated - 3 *special problem combinatorics dp math	0 / 0	暂无评定
	767	P1666F Fancy Stack combinatorics dp implementation *2200	0 / 0	8
	756	P1667E Centroid Probabilities combinatorics dp fft math *3000	0 / 0	10
	739	P1670F Jee, You See? bitmasks combinatorics dp *2400	0 / 0	9
	734	P1671E Preorder combinatorics divide and conquer dp dsu hashing sortings trees *2100	0 / 0	NOI/NOI+/CTSC
	733	P1671F Permutation Counting brute force combinatorics dp fft math *2700	0 / 0	10
	719	P1673D Lost Arithmetic Progression combinatorics math number theory *1900	0 / 0	省选/NOI-
	718	P1673E Power or XOR? bitmasks combinatorics math number theory *2500	0 / 0	9
	715	P1674B Dictionary combinatorics math *800	0 / 0	普及/提高-
	714	P1674C Infinite Replacement combinatorics implementation strings *1000	0 / 0	普及/提高-
	680	P1679E Typical Party in Dorm bitmasks combinatorics dp strings *2400	0 / 0	9
	640	P1687E Become Big For Me combinatorics constructive algorithms greedy math number theory *3500	0 / 0	10
	618	P1691F K-Set Tree combinatorics dfs and similar dp math trees *2500	0 / 0	9
	591	P1696E Placing Jinas combinatorics math *2000	0 / 0	NOI/NOI+/CTSC
	588	P1696H Maximum Product? brute force combinatorics dp greedy implementation math two pointers *3500	0 / 0	10
	583	P1697E Coloring brute force combinatorics constructive algorithms dp geometry graphs greedy implementation math *2400	0 / 0	9
	577	P1698E PermutationForces II brute force combinatorics greedy sortings trees two pointers *2300	0 / 0	8
	572	P1699C The Third Problem combinatorics constructive algorithms math *1700	0 / 0	提高+/省选-
	558	P1701F Points combinatorics data structures implementation math matrices *2500	0 / 0	9
	535	P1704H1 Game of AI (easy version) combinatorics constructive algorithms dp fft math *3200	0 / 0	10
	534	P1704H2 Game of AI (hard version) combinatorics fft math *3500	0 / 0	10
	530	P1705D Mark and Lightbulbs combinatorics constructive algorithms greedy math sortings *1800	0 / 0	省选/NOI-
	529	P1705E Mark and Professor Koro binary search bitmasks brute force combinatorics data structures greedy *2300	0 / 0	8
	509	P1707D Partial Virtual Trees combinatorics dfs and similar dp math trees *3000	0 / 0	10
	487	P1712E1 LCM Sum (easy version) binary search brute force combinatorics math number theory two pointers *2300	0 / 0	8
	479	P1713F Lost Array bitmasks combinatorics constructive algorithms dp math *2900	0 / 0	10
	469	P1715C Monoblock combinatorics data structures implementation math *1700	0 / 0	提高+/省选-
	460	P1716F Bags with Balls combinatorics dp math number theory *2500	0 / 0	9
	456	P1717D Madoka and The Corruption Scheme combinatorics constructive algorithms greedy math *1900	0 / 0	省选/NOI-
	422	P1725C Circular Mirror binary search combinatorics geometry math two pointers *2000	0 / 0	NOI/NOI+/CTSC
	420	P1725E Electrical Efficiency combinatorics data structures dp math number theory trees *2500	0 / 0	9
	416	P1725I Imitating the Key Tree combinatorics dsu trees *2800	0 / 0	10
	407	P1726E Almost Perfect combinatorics fft math *2400	0 / 0	9
	405	P1726G A Certain Magical Party combinatorics data structures greedy sortings *3300	0 / 0	10
	397	P1728G Illumination binary search bitmasks brute force combinatorics dp math two pointers *2700	0 / 0	10
	390	P1729G Cut Substrings combinatorics dp hashing strings two pointers *2100	0 / 0	NOI/NOI+/CTSC
	385	P1730E Maximums and Minimums combinatorics data structures divide and conquer number theory *2700	0 / 0	10
	378	P1731F Function Sum brute force combinatorics dp fft math *2500	0 / 0	9
	377	P1732A Bestie brute force combinatorics constructive algorithms implementation math number theory *1000	0 / 0	普及/提高-
	355	P1735D Meta-set brute force combinatorics data structures hashing math *1700	0 / 0	提高+/省选-

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