Problemset - Codeforces

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Codeforces Round #792 (Div. 1 + Div. 2)
34:24:52
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combinatorics

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Problems

#	Name
1679E	Typical Party in Dorm bitmasks, brute force, combinatorics, dp, math, strings	2400	x473
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x14399
1674B	Dictionary combinatorics, math	800	x17939
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x400
1673D	Lost Arithmetic Progression combinatorics, math, number theory	1900	x2125
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x169
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x1707
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x477
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x264
1666F	Fancy Stack combinatorics, dp, implementation	2200	x606
1663D	Is it rated - 3 combinatorics, dp, math		x1023
1662N	Drone Photo combinatorics, math, sortings		x235
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x15518
1657E	Star MST combinatorics, dp, graph matchings, math	2200	x1172
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x36
1651E	Sum of Matchings brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math	2600	x352
1648C	Tyler and Strings combinatorics, data structures, implementation	1900	x2095
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x8218
1644F	Basis combinatorics, fft, math, number theory	2900	x221
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x2222
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x141
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x701
1630E	Expected Components combinatorics, math, number theory, probabilities	2900	x265
1628D2	Game on Sum (Hard Version) combinatorics, dp, games, math	2400	x1280
1628D1	Game on Sum (Easy Version) combinatorics, dp, games, math	2100	x2067
1626F	A Random Code Problem combinatorics, dp, math, number theory, probabilities	2800	x409
1622D	Shuffle combinatorics, math, two pointers	2000	x2845
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x614
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x365
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x388
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x7532
1613F	Tree Coloring combinatorics, divide and conquer, fft	2600	x448
1612G	Max Sum Array combinatorics, constructive algorithms, greedy, sortings	2500	x565
1610D	Not Quite Lee combinatorics, dp, math, number theory	2000	x2021
1608F	MEX counting combinatorics, dp, implementation	3200	x167
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1028
1606E	Arena combinatorics, dp, math	2100	x2395
1605F	PalindORme combinatorics, dp	2900	x112
1603F	October 18, 2017 combinatorics, dp, implementation, math	2700	x103
1603E	A Perfect Problem combinatorics, dp, math	3200	x154
1599C	Bubble Strike combinatorics, math, probabilities, ternary search	2000	x1113
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x1763
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x6547
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x8924
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x75
1585F	Non-equal Neighbours combinatorics, dp, math	2400	x678
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x2841
1582B	Luntik and Subsequences combinatorics, math	900	x14341
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x11619
1580F	Problems for Codeforces combinatorics, fft, math	3300	x66
1580B	Mathematics Curriculum brute force, combinatorics, dp, trees	2600	x616
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x417
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x700
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x14567
1569C	Jury Meeting combinatorics, math	1500	x9085
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x9816
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x1823
1558D	Top-Notch Insertions combinatorics, data structures	2600	x739
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x6826
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x914
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x118
1553E	Permutation Shift brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math	2100	x2735
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5044
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x11994
1551F	Equidistant Vertices brute force, combinatorics, dfs and similar, dp, trees	2200	x1284
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1487
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1389
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x449
1545B	AquaMoon and Chess combinatorics, math	1900	x4408
1543B	Customising the Track combinatorics, greedy, math	900	x19251
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x539
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x885
1542D	Priority Queue combinatorics, dp, implementation, math, ternary search	2200	x2145
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x1841
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x16354
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x723
1536E	Omkar and Forest combinatorics, graphs, math, shortest paths	2300	x1992
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x10145
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x545
1528F	AmShZ Farm combinatorics, fft, math	3300	x155
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x341
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x7039
1527D	MEX Tree combinatorics, dfs and similar, implementation, math, trees	2400	x1418
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x803
1525E	Assimilation IV combinatorics, dp, math, probabilities, two pointers	2100	x1491
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1107
1517F	Reunion combinatorics, dp, trees	3200	x245
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x655
1515E	Phoenix and Computers combinatorics, dp, math	2200	x2413
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x16209
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1189
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x10610
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2056
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x3135
1503E	2-Coloring combinatorics, dp, math	3100	x368
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x840
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1103
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x19495
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x896
1488H	Build From Suffixes *special problem, combinatorics, data structures	2800	x36

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