combinatorics - Problem Set

ID	Problem Show tags Hide tags	AC / Tried	Difficulty
2201	CF1599C Bubble Strike combinatorics math probabilities ternary search *2000	0 / 0	(None)
2175	CF1603E A Perfect Problem combinatorics dp math *3200	0 / 0	(None)
2174	CF1603F October 18, 2017 combinatorics dp implementation math *2700	0 / 0	(None)
2165	CF1605F PalindORme combinatorics dp *2900	0 / 0	(None)
2160	CF1606E Arena combinatorics dp math *2100	0 / 0	(None)
2145	CF1608D Dominoes combinatorics fft graphs math number theory *2400	0 / 0	(None)
2143	CF1608F MEX counting combinatorics dp implementation *3200	0 / 0	(None)
2129	CF1610D Not Quite Lee combinatorics dp math number theory *2000	0 / 0	(None)
2107	CF1612G Max Sum Array combinatorics constructive algorithms greedy sortings *2500	0 / 0	(None)
2100	CF1613F Tree Coloring combinatorics divide and conquer fft *2600	0 / 0	(None)
2097	CF1614C Divan and bitwise operations bitmasks combinatorics constructive algorithms dp math *1500	0 / 0	(None)
2087	CF1615F LEGOndary Grandmaster combinatorics dp math *2800	0 / 0	(None)
2075	CF1616H Keep XOR Low bitmasks combinatorics data structures divide and conquer dp math *3000	0 / 0	(None)
2044	CF1620G Subsequences Galore bitmasks combinatorics dp *2400	0 / 0	(None)
2030	CF1622D Shuffle combinatorics math two pointers *2000	0 / 0	(None)
2001	CF1626F A Random Code Problem combinatorics dp math number theory probabilities *2800	0 / 0	(None)
1990	CF1628D1 Game on Sum (Easy Version) combinatorics dp games math *2100	0 / 0	(None)
1989	CF1628D2 Game on Sum (Hard Version) combinatorics dp games math *2400	0 / 0	(None)
1979	CF1630E Expected Components combinatorics math number theory probabilities *2900	0 / 0	(None)
1917	CF1641D Two Arrays bitmasks brute force combinatorics greedy hashing math two pointers *2700	0 / 0	(None)
1916	CF1641E Special Positions combinatorics divide and conquer fft math *3300	0 / 0	(None)
1907	CF1644E Expand the Path brute force combinatorics data structures implementation math *1900	0 / 0	(None)
1906	CF1644F Basis combinatorics fft math number theory *2900	0 / 0	(None)
1892	CF1648A Weird Sum combinatorics data structures geometry math matrices sortings *1400	0 / 0	(None)
1889	CF1648C Tyler and Strings combinatorics data structures implementation *1900	0 / 0	(None)
1871	CF1651E Sum of Matchings brute force combinatorics constructive algorithms dfs and similar graph matchings greedy math *2600	0 / 0	(None)
1861	CF1654H Three Minimums combinatorics constructive algorithms divide and conquer dp fft math *3500	0 / 0	(None)
1844	CF1657E Star MST combinatorics dp graph matchings math *2200	0 / 0	(None)
1841	CF1658B Marin and Anti-coprime Permutation combinatorics math number theory *800	0 / 0	(None)
1799	CF1662N Drone Photo combinatorics math sortings	0 / 0	(None)
1794	CF1663D Is it rated - 3 *special problem combinatorics dp math	0 / 0	(None)
1777	CF1666F Fancy Stack combinatorics dp implementation *2200	0 / 0	(None)
1765	CF1667E Centroid Probabilities combinatorics dp fft math *3000	0 / 0	(None)
1745	CF1670F Jee, You See? bitmasks combinatorics dp *2400	0 / 0	(None)
1740	CF1671E Preorder combinatorics divide and conquer dp dsu hashing sortings trees *2100	0 / 0	(None)
1739	CF1671F Permutation Counting brute force combinatorics dp fft math *2700	0 / 0	(None)
1723	CF1673D Lost Arithmetic Progression combinatorics math number theory *1900	0 / 0	(None)
1722	CF1673E Power or XOR? bitmasks combinatorics math number theory *2500	0 / 0	(None)
1719	CF1674B Dictionary combinatorics math *800	0 / 0	(None)
1718	CF1674C Infinite Replacement combinatorics implementation strings *1000	0 / 0	(None)
1681	CF1679E Typical Party in Dorm bitmasks combinatorics dp strings *2400	0 / 0	(None)
1637	CF1687E Become Big For Me combinatorics constructive algorithms greedy math number theory *3500	0 / 0	(None)
1611	CF1691F K-Set Tree combinatorics dfs and similar dp math trees *2500	0 / 0	(None)
1582	CF1696E Placing Jinas combinatorics math *2000	0 / 0	(None)
1578	CF1696H Maximum Product? brute force combinatorics dp greedy implementation math two pointers *3500	0 / 0	(None)
1573	CF1697E Coloring brute force combinatorics constructive algorithms dp geometry graphs greedy implementation math *2400	0 / 0	(None)
1566	CF1698E PermutationForces II brute force combinatorics greedy sortings trees two pointers *2300	0 / 0	(None)
1561	CF1699C The Third Problem combinatorics constructive algorithms math *1700	0 / 0	(None)
1545	CF1701F Points combinatorics data structures implementation math matrices *2500	0 / 0	(None)
1519	CF1704H1 Game of AI (easy version) combinatorics constructive algorithms dp fft math *3200	0 / 0	(None)
1518	CF1704H2 Game of AI (hard version) combinatorics fft math *3500	0 / 0	(None)
1514	CF1705D Mark and Lightbulbs combinatorics constructive algorithms greedy math sortings *1800	0 / 0	(None)
1512	CF1705E Mark and Professor Koro binary search bitmasks brute force combinatorics data structures greedy *2300	0 / 0	(None)
1500	CF1707D Partial Virtual Trees combinatorics dfs and similar dp math trees *3000	0 / 0	(None)
1476	CF1712E1 LCM Sum (easy version) binary search brute force combinatorics math number theory two pointers *2300	0 / 0	(None)
1467	CF1713F Lost Array bitmasks combinatorics constructive algorithms dp math *2900	0 / 0	(None)
1456	CF1715C Monoblock combinatorics data structures implementation math *1700	0 / 0	(None)
1446	CF1716F Bags with Balls combinatorics dp math number theory *2500	0 / 0	(None)
1442	CF1717D Madoka and The Corruption Scheme combinatorics constructive algorithms greedy math *1900	0 / 0	(None)
10455	CF1725C Circular Mirror binary search combinatorics geometry math two pointers *2000	0 / 0	(None)
10452	CF1725E Electrical Efficiency combinatorics data structures dp math number theory trees *2500	0 / 0	(None)
10448	CF1725I Imitating the Key Tree combinatorics dsu trees *2800	0 / 0	(None)
10438	CF1726E Almost Perfect combinatorics fft math *2400	0 / 0	(None)
10436	CF1726G A Certain Magical Party combinatorics data structures greedy sortings *3300	0 / 0	(None)
10427	CF1728G Illumination binary search bitmasks brute force combinatorics dp math two pointers *2700	0 / 0	(None)
10419	CF1729G Cut Substrings combinatorics dp hashing strings two pointers *2100	0 / 0	(None)
10414	CF1730E Maximums and Minimums combinatorics data structures divide and conquer number theory *2700	0 / 0	(None)
10406	CF1731F Function Sum brute force combinatorics dp fft math *2500	0 / 0	(None)
10405	CF1732A Bestie brute force combinatorics constructive algorithms implementation math number theory *1000	0 / 0	(None)
10381	CF1735D Meta-set brute force combinatorics data structures hashing math *1700	0 / 0	(None)
10367	CF1737E Ela Goes Hiking combinatorics dp math probabilities *2500	0 / 0	(None)
10346	CF1738E Balance Addicts combinatorics dp math two pointers *2300	0 / 0	(None)
10278	CF1739C Card Game combinatorics constructive algorithms dp games *1500	0 / 0	(None)
10178	CF1740F Conditional Mix combinatorics dp math *2600	0 / 0	(None)
9979	CF1743A Password brute force combinatorics implementation math *800	0 / 0	(None)
9912	CF1743G Antifibonacci Cut bitmasks combinatorics constructive algorithms data structures dp hashing math *3000	0 / 0	(None)
9690	CF1747E List Generation combinatorics dp math *2900	0 / 0	(None)
9646	CF1748D ConstructOR bitmasks chinese remainder theorem combinatorics constructive algorithms math number theory *2100	0 / 0	(None)
9579	CF1749D Counting Arrays combinatorics dp math number theory *1900	0 / 0	(None)
9512	CF1750D Count GCD combinatorics math number theory *1800	0 / 0	(None)
9490	CF1750F Majority combinatorics dp math strings *2700	0 / 0	(None)
9479	CF1750G Doping combinatorics dp math *3300	0 / 0	(None)
9313	CF1758E Tick, Tock combinatorics dfs and similar dsu graphs *2500	0 / 0	(None)
9101	CF1761D Carry Bit combinatorics math *2100	0 / 0	(None)
9067	CF1761F2 Anti-median (Hard Version) combinatorics dp math *3500	0 / 0	(None)
9023	CF1762C Binary Strings are Fun combinatorics math *1400	0 / 0	(None)
9001	CF1762E Tree Sum combinatorics math trees *2600	0 / 0	(None)
8934	CF1763D Valid Bitonic Permutations combinatorics dp implementation math number theory *2200	0 / 0	(None)
8868	CF1764D Doremy's Pegging Game combinatorics dp math *2000	0 / 0	(None)
8768	CF1765C Card Guessing combinatorics dp probabilities *2600	0 / 0	(None)
8535	CF1767D Playoff combinatorics constructive algorithms dp greedy math *1500	0 / 0	(None)
8457	CF1768E Partial Sorting combinatorics math number theory *2300	0 / 0	(None)
8390	CF1770E Koxia and Tree combinatorics dfs and similar dp dsu math probabilities trees *2400	0 / 0	(None)
8379	CF1770F Koxia and Sequence bitmasks combinatorics dp math number theory *3100	0 / 0	(None)
8346	CF1771A Hossam and Combinatorics combinatorics math sortings *900	0 / 0	(None)
8246	CF1773D Dominoes combinatorics flows graph matchings greedy *2600	0 / 0	(None)
8213	CF1773G Game of Questions bitmasks combinatorics dp fft math probabilities *2800	0 / 0	(None)
8067	CF1774G Segment Covering brute force combinatorics constructive algorithms data structures dp trees *3200	0 / 0	(None)
7901	CF1776G Another Wine Tasting Event combinatorics constructive algorithms math strings *2100	0 / 0	(None)
7801	CF1777B Emordnilap combinatorics greedy math *900	0 / 0	(None)

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