Problemset - Codeforces

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Codeforces Round 946 (Div. 3)
3 days
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math

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Problems

#	Name
839D	Winter is here combinatorics, dp, math, number theory	2200	x2695
616E	Sum of Remainders implementation, math, number theory	2200	x2696
768D	Jon and Orbs dp, math, probabilities	2200	x2778
1305E	Kuroni and the Score Distribution constructive algorithms, greedy, implementation, math	2200	x2918
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x2989
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3066
1327D	Infinite Path brute force, dfs and similar, graphs, math, number theory	2200	x3072
1389E	Calendar Ambiguity math, number theory	2200	x3114
1656E	Equal Tree Sums constructive algorithms, dfs and similar, math, trees	2200	x3305
1515E	Phoenix and Computers combinatorics, dp, math	2200	x3373
1406D	Three Sequences constructive algorithms, data structures, greedy, math	2200	x3380
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3509
280C	Game on Tree implementation, math, probabilities, trees	2200	x3512
1428E	Carrots for Rabbits binary search, data structures, greedy, math, sortings	2200	x3516
1467D	Sum of Paths combinatorics, dp, math	2200	x3542
903D	Almost Difference data structures, math	2200	x3698
1110E	Magic Stones constructive algorithms, math, sortings	2200	x3806
1474D	Cleaning data structures, dp, greedy, math	2200	x3874
1333F	Kate and imperfection greedy, implementation, math, number theory, sortings, two pointers	2200	x3975
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4071
1092D1	Great Vova Wall (Version 1) greedy, implementation, math	2200	x4468
1485D	Multiples and Power Differences constructive algorithms, graphs, math, number theory	2200	x4946
559C	Gerald and Giant Chess combinatorics, dp, math, number theory	2200	x6160
86D	Powerful array data structures, implementation, math, two pointers	2200	x12576
209B	Pixels constructive algorithms, math	2100	x357
212C	Cowboys combinatorics, dp, math	2100	x376
802D	Marmots (easy) math	2100	x438
491B	New York Hotel greedy, math	2100	x537
1387A	Graph *special problem, binary search, dfs and similar, dp, math, ternary search	2100	x672
225E	Unsolvable math, number theory	2100	x779
217B	Blackboard Fibonacci brute force, math	2100	x855
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x926
336D	Vasily the Bear and Beautiful Strings combinatorics, math, number theory	2100	x934
615E	Hexagons binary search, implementation, math	2100	x964
268E	Playlist math, probabilities, sortings	2100	x976
1599H	Hidden Fortress interactive, math	2100	x1013
441D	Valera and Swaps constructive algorithms, dsu, graphs, implementation, math, string suffix structures	2100	x1060
1146D	Frog Jumping dfs and similar, math, number theory	2100	x1080
895D	String Mark combinatorics, math, strings	2100	x1086
818F	Level Generation binary search, math, ternary search	2100	x1292
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1335
463E	Caisa and Tree brute force, dfs and similar, math, number theory, trees	2100	x1386
452C	Magic Trick combinatorics, math, probabilities	2100	x1395
1098B	Nice table brute force, constructive algorithms, greedy, math	2100	x1466
1032E	The Unbearable Lightness of Weights dp, math	2100	x1476
439E	Devu and Birthday Celebration combinatorics, dp, math	2100	x1479
837E	Vasya's Function binary search, implementation, math	2100	x1510
5D	Follow Traffic Rules implementation, math	2100	x1521
992D	Nastya and a Game brute force, implementation, math	2100	x1597
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1678
1158C	Permutation recovery constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings	2100	x1700
590B	Chip 'n Dale Rescue Rangers binary search, geometry, math	2100	x1705
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1723
1267K	Key Storage combinatorics, math	2100	x1738
1183F	Topforces Strikes Back brute force, math, sortings	2100	x1776
549H	Degenerate Matrix binary search, math	2100	x1785
1252K	Addition Robot data structures, math, matrices	2100	x1787
1510D	Digits dp, math, number theory	2100	x1801
919E	Congruence Equation chinese remainder theorem, math, number theory	2100	x1830
1027E	Inverse Coloring combinatorics, dp, math	2100	x1862
145C	Lucky Subsequence combinatorics, dp, math	2100	x1885
1413E	Solo mid Oracle greedy, math, ternary search	2100	x1913
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x1920
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1955
1525E	Assimilation IV combinatorics, dp, math, probabilities, two pointers	2100	x1969
601B	Lipshitz Sequence data structures, math	2100	x2002
571A	Lengthening Sticks combinatorics, implementation, math	2100	x2010
776E	The Holmes Children math, number theory	2100	x2102
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2105
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2185
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x2243
985D	Sand Fortress binary search, constructive algorithms, math	2100	x2256
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2279
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2284
1761D	Carry Bit combinatorics, math	2100	x2339
1710B	Rain binary search, brute force, data structures, geometry, greedy, implementation, math	2100	x2356
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2356
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2378
980D	Perfect Groups dp, math, number theory	2100	x2413
955C	Sad powers binary search, math, number theory	2100	x2462
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2463
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2469
1202C	You Are Given a WASD-string... brute force, data structures, dp, greedy, implementation, math, strings	2100	x2475
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2565
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x2605
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2618
1551D2	Domino (hard version) constructive algorithms, implementation, math	2100	x2663
1748D	ConstructOR bitmasks, chinese remainder theorem, combinatorics, constructive algorithms, math, number theory	2100	x2668
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2758
1654D	Potion Brewing Class dfs and similar, math, number theory, trees	2100	x2783
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2784
1466F	Euclid's nightmare bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings	2100	x2794
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2801
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2842
1884D	Counting Rhyme dp, math, number theory	2100	x2849
1254B2	Send Boxes to Alice (Hard Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	2100	x2938
1204D2	Kirk and a Binary String (hard version) data structures, greedy, math, strings	2100	x2973
1628D1	Game on Sum (Easy Version) combinatorics, dp, games, math	2100	x3020
1151E	Number of Components combinatorics, data structures, dp, math	2100	x3040
1271E	Common Number binary search, combinatorics, dp, math	2100	x3118