Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 950 (Div. 3)
32:49:44
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x514
1713C	Build Permutation constructive algorithms, dp, math	1200	x16889
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1284
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x537
1709B	Also Try Minecraft data structures, dp, implementation	900	x21986
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x146
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x588
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1660
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x14500
1706B	Making Towers dp, greedy, math	1100	x16266
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x172
1704F	Colouring Game constructive algorithms, dp, games	2600	x940
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2240
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10116
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x18468
1701E	Text Editor brute force, dp, greedy, strings	2500	x1076
1700F	Puzzle constructive algorithms, dp, greedy	2600	x855
1700D	River Locks binary search, dp, greedy, math	1900	x5866
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1097
1699D	Almost Triple Deletions data structures, dp, greedy	2300	x3044
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1145
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x155
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x1930
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2100
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x10440
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x782
1693B	Fake Plastic Trees dfs and similar, dp, greedy, trees	1700	x8118
1692H	Gambling data structures, dp, greedy, math	1700	x7134
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x16211
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x912
1689D	Lena and Matrix data structures, dp, geometry, shortest paths	1900	x4051
1689C	Infected Tree dfs and similar, dp, trees	1600	x10702
1686B	Odd Subarrays dp, greedy	800	x17959
1681F	Unique Occurrences data structures, dfs and similar, divide and conquer, dp, dsu, trees	2300	x1567
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x704
1681D	Required Length brute force, dfs and similar, dp, hashing, shortest paths	1700	x9316
1680E	Moving Chips bitmasks, dp, greedy	2000	x3649
1679F	Formalism for Formalism bitmasks, dp, math	2600	x503
1679E	Typical Party in Dorm bitmasks, combinatorics, dp, strings	2400	x1105
1679D	Toss a Coin to Your Graph... binary search, dfs and similar, dp, graphs	1900	x4592
1678B2	Tokitsukaze and Good 01-String (hard version) dp, greedy, implementation	1800	x6415
1677F	Tokitsukaze and Gems dp, math	3500	x87
1677D	Tokitsukaze and Permutations dp, math	2500	x1196
1677A	Tokitsukaze and Strange Inequality brute force, data structures, dp	1600	x8153
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x14385
1675G	Sorting Pancakes dp	2300	x1611
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x5055
1674G	Remove Directed Edges dfs and similar, dp, graphs	2000	x2402
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x11987
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x318
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x2656
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x923
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x629
1667D	Edge Elimination constructive algorithms, dfs and similar, dp, trees	2900	x645
1667B	Optimal Partition data structures, dp	2100	x3498
1666J	Job Lookup constructive algorithms, dp, shortest paths, trees	2100	x1295
1666F	Fancy Stack combinatorics, dp, implementation	2200	x1114
1663D	Is it rated - 3 *special problem, combinatorics, dp, math		x1390
1662L	Il Derby della Madonnina data structures, dp, math		x999
1662G	Gastronomic Event dp, greedy, trees		x448
1662C	European Trip dp, graphs, math, matrices		x291
1661E	Narrow Components brute force, data structures, dp, dsu, math, trees	2500	x915
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17095
1660C	Get an Even String dp, greedy, strings	1300	x18891
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x9814
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x1024
1657E	Star MST combinatorics, dp, graph matchings, math	2200	x1998
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x71
1650G	Counting Shortcuts data structures, dfs and similar, dp, graphs, shortest paths	2100	x2348
1650F	Vitaly and Advanced Useless Algorithms dp, greedy, implementation	2200	x1391
1648D	Serious Business data structures, divide and conquer, dp, implementation, shortest paths	2800	x808
1647F	Madoka and Laziness dp, greedy	3100	x378
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5141
1646E	Power Board brute force, dp, math, number theory	2200	x2309
1646D	Weight the Tree constructive algorithms, dfs and similar, dp, implementation, trees	2000	x3566
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13348
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13427
1637F	Towers constructive algorithms, dfs and similar, dp, greedy, trees	2500	x1708
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7412
1637B	MEX and Array brute force, dp, greedy, math	1100	x14654
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6040
1633D	Make Them Equal dp, greedy	1600	x13182
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12326
1631B	Fun with Even Subarrays dp, greedy	1100	x19443
1630D	Flipping Range constructive algorithms, dp, greedy, number theory	2400	x1516
1630C	Paint the Middle dp, greedy, sortings, two pointers	2200	x2856
1628D2	Game on Sum (Hard Version) combinatorics, dp, games, math	2400	x1990
1628D1	Game on Sum (Easy Version) combinatorics, dp, games, math	2100	x3030
1627E	Not Escaping data structures, dp, implementation, shortest paths, two pointers	2200	x2255
1627D	Not Adding brute force, dp, math, number theory	1900	x7888
1626F	A Random Code Problem combinatorics, dp, math, number theory, probabilities	2800	x714
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x10673
1625E1	Cats on the Upgrade (easy version) brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees	2500	x981
1625C	Road Optimization dp	1700	x10150
1624E	Masha-forgetful brute force, constructive algorithms, dp, hashing, implementation, strings	2000	x3975
1621G	Weighted Increasing Subsequences data structures, dp, math	3200	x626
1621E	New School binary search, data structures, dp, greedy, implementation, sortings	2300	x1726
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x863
1620F	Bipartite Array dp, greedy	2800	x590
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6393