Problemset - Codeforces

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Problems

#	Name
1409E	Two Platforms binary search, dp, sortings, two pointers	1800	x7874
1409D	Decrease the Sum of Digits greedy, math	1500	x19542
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x23422
1409B	Minimum Product brute force, greedy, math	1100	x29128
1409A	Yet Another Two Integers Problem greedy, math	800	x67287
1408I	Bitwise Magic dp, math	3200	x177
1408H	Rainbow Triples binary search, data structures, flows, greedy	3300	x411
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x1070
1408F	Two Different constructive algorithms, divide and conquer	2300	x2411
1408E	Avoid Rainbow Cycles data structures, dsu, graphs, greedy, sortings, trees	2400	x2008
1408D	Searchlights binary search, brute force, data structures, dp, implementation, sortings, two pointers	2000	x4347
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8889
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x9997
1408A	Circle Coloring constructive algorithms	800	x12514
1407E	Egor in the Republic of Dagestan constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths	2500	x1718
1407D	Discrete Centrifugal Jumps data structures, dp, graphs	2200	x4984
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x12156
1407B	Big Vova brute force, greedy, math, number theory	1300	x17082
1407A	Ahahahahahahahaha constructive algorithms, math	1100	x20493
1406E	Deleting Numbers interactive, math, number theory	2600	x1717
1406D	Three Sequences constructive algorithms, data structures, greedy, math	2200	x3530
1406C	Link Cut Centroids constructive algorithms, dfs and similar, graphs, trees	1700	x10379
1406B	Maximum Product brute force, dp, greedy, implementation, sortings	1200	x22773
1406A	Subset Mex greedy, implementation, math	900	x21563
1405B	Array Cancellation constructive algorithms, implementation	1000	x21671
1405A	Permutation Forgery constructive algorithms	800	x21490
1404E	Bricks flows, graph matchings, graphs	2800	x1250
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x1097
1404C	Fixed Point Removal binary search, constructive algorithms, data structures, greedy, two pointers	2300	x2694
1404B	Tree Tag dfs and similar, dp, games, trees	1900	x7448
1404A	Balanced Bitstring implementation, strings	1500	x15605
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x53
1403B	Spring cleaning *special problem, data structures, dfs and similar, graphs, trees	2300	x369
1403A	The Potion of Great Power *special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers	2400	x293
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x205
1402B	Roads *special problem, geometry, sortings	2900	x113
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1202
1401F	Reverse and Swap binary search, bitmasks, data structures	2400	x1765
1401E	Divide Square data structures, geometry, implementation, sortings	2400	x2456
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x9381
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x24442
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x21153
1401A	Distance and Axis constructive algorithms, math	900	x27587
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x980
1400F	x-prime Substrings brute force, dfs and similar, dp, string suffix structures, strings	2800	x903
1400E	Clear the Multiset data structures, divide and conquer, dp, greedy	2200	x5521
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x10376
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x17404
1400B	RPG Protagonist brute force, greedy, math	1700	x11236
1400A	String Similarity constructive algorithms, strings	800	x27079
1399F	Yet Another Segments Subset data structures, dp, graphs, sortings	2300	x1628
1399E2	Weights Division (hard version) binary search, dfs and similar, greedy, sortings, trees, two pointers	2200	x2289
1399E1	Weights Division (easy version) data structures, dfs and similar, greedy, trees	2000	x5864
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x18379
1399C	Boats Competition brute force, greedy, two pointers	1200	x29331
1399B	Gifts Fixing greedy	800	x43784
1399A	Remove Smallest greedy, sortings	800	x67477
1398G	Running Competition bitmasks, fft, math, number theory	2600	x1120
1398F	Controversial Rounds binary search, data structures, dp, greedy, two pointers	2500	x1292
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2434
1398D	Colored Rectangles dp, greedy, sortings	1800	x11552
1398C	Good Subarrays data structures, dp, math	1600	x26988
1398B	Substring Removal Game games, greedy, sortings	800	x24731
1398A	Bad Triangle geometry, math	800	x27714
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14766
1397A	Juggling Letters greedy, strings	800	x28733
1396E	Distance Matching constructive algorithms, dfs and similar, trees	3200	x351
1396D	Rainbow Rectangles data structures, sortings, two pointers	3300	x310
1396C	Monster Invaders dp, greedy, implementation	2300	x2619
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11485
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15535
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14199
1395B	Boboniu Plays Chess constructive algorithms	1100	x16073
1395A	Boboniu Likes to Color Balls brute force, math	1000	x24203
1394E	Boboniu and Banknote Collection strings	3500	x148
1394D	Boboniu and Jianghu dp, greedy, sortings, trees	2800	x1035
1394C	Boboniu and String binary search, geometry, ternary search	2600	x1118
1394B	Boboniu Walks on Graph brute force, dfs and similar, graphs, hashing	2300	x2031
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6804
1393E2	Twilight and Ancient Scroll (harder version) dp, hashing, implementation, string suffix structures, strings, two pointers	3200	x371
1393E1	Twilight and Ancient Scroll (easier version) dp, hashing, implementation, string suffix structures, strings	2800	x391
1393D	Rarity and New Dress dfs and similar, dp, implementation, shortest paths	2100	x4015
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10656
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16762
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20541
1392I	Kevin and Grid fft, graphs, math	3300	x205
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x777
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x508
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x2183
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3545
1392D	Omkar and Bed Wars dp, greedy	1700	x8985
1392C	Omkar and Waterslide greedy, implementation	1200	x18867
1392B	Omkar and Infinity Clock implementation, math	800	x18505
1392A	Omkar and Password greedy, math	800	x20793
1391E	Pairs of Pairs constructive algorithms, dfs and similar, graphs, greedy, trees	2600	x1717
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x5332
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x15070
1391B	Fix You brute force, greedy, implementation	800	x27472
1391A	Suborrays constructive algorithms, math	800	x24449
1389G	Directing Edges dfs and similar, dp, graphs, trees	2800	x396