Problemset - Codeforces

Problems

#	Name
1409E	Two Platforms binary search, dp, sortings, two pointers	1800	x7882
1409D	Decrease the Sum of Digits greedy, math	1500	x19559
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x23436
1409B	Minimum Product brute force, greedy, math	1100	x29145
1409A	Yet Another Two Integers Problem greedy, math	800	x67384
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	x1072
1408F	Two Different constructive algorithms, divide and conquer	2300	x2412
1408E	Avoid Rainbow Cycles data structures, dsu, graphs, greedy, sortings, trees	2400	x2009
1408D	Searchlights binary search, brute force, data structures, dp, implementation, sortings, two pointers	2000	x4361
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8889
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x10000
1408A	Circle Coloring constructive algorithms	800	x12516
1407E	Egor in the Republic of Dagestan constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths	2500	x1723
1407D	Discrete Centrifugal Jumps data structures, dp, graphs	2200	x4997
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x12171
1407B	Big Vova brute force, greedy, math, number theory	1300	x17089
1407A	Ahahahahahahahaha constructive algorithms, math	1100	x20501
1406E	Deleting Numbers interactive, math, number theory	2600	x1719
1406D	Three Sequences constructive algorithms, data structures, greedy, math	2200	x3534
1406C	Link Cut Centroids constructive algorithms, dfs and similar, graphs, trees	1700	x10381
1406B	Maximum Product brute force, dp, greedy, implementation, sortings	1200	x22787
1406A	Subset Mex greedy, implementation, math	900	x21574
1405B	Array Cancellation constructive algorithms, implementation	1000	x21681
1405A	Permutation Forgery constructive algorithms	800	x21492
1404E	Bricks flows, graph matchings, graphs	2800	x1252
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x1103
1404C	Fixed Point Removal binary search, constructive algorithms, data structures, greedy, two pointers	2300	x2707
1404B	Tree Tag dfs and similar, dp, games, trees	1900	x7481
1404A	Balanced Bitstring implementation, strings	1500	x15625
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	x1768
1401E	Divide Square data structures, geometry, implementation, sortings	2400	x2457
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x9384
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x24457
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x21161
1401A	Distance and Axis constructive algorithms, math	900	x27593
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x981
1400F	x-prime Substrings brute force, dfs and similar, dp, string suffix structures, strings	2800	x907
1400E	Clear the Multiset data structures, divide and conquer, dp, greedy	2200	x5531
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x10388
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x17410
1400B	RPG Protagonist brute force, greedy, math	1700	x11241
1400A	String Similarity constructive algorithms, strings	800	x27083
1399F	Yet Another Segments Subset data structures, dp, graphs, sortings	2300	x1630
1399E2	Weights Division (hard version) binary search, dfs and similar, greedy, sortings, trees, two pointers	2200	x2293
1399E1	Weights Division (easy version) data structures, dfs and similar, greedy, trees	2000	x5869
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x18388
1399C	Boats Competition brute force, greedy, two pointers	1200	x29357
1399B	Gifts Fixing greedy	800	x43807
1399A	Remove Smallest greedy, sortings	800	x67568
1398G	Running Competition bitmasks, fft, math, number theory	2600	x1120
1398F	Controversial Rounds binary search, data structures, dp, greedy, two pointers	2500	x1293
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2436
1398D	Colored Rectangles dp, greedy, sortings	1800	x11574
1398C	Good Subarrays data structures, dp, math	1600	x27035
1398B	Substring Removal Game games, greedy, sortings	800	x24732
1398A	Bad Triangle geometry, math	800	x27720
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14774
1397A	Juggling Letters greedy, strings	800	x28750
1396E	Distance Matching constructive algorithms, dfs and similar, trees	3200	x351
1396D	Rainbow Rectangles data structures, sortings, two pointers	3300	x311
1396C	Monster Invaders dp, greedy, implementation	2300	x2623
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11490
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15550
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14204
1395B	Boboniu Plays Chess constructive algorithms	1100	x16078
1395A	Boboniu Likes to Color Balls brute force, math	1000	x24212
1394E	Boboniu and Banknote Collection strings	3500	x149
1394D	Boboniu and Jianghu dp, greedy, sortings, trees	2800	x1037
1394C	Boboniu and String binary search, geometry, ternary search	2600	x1119
1394B	Boboniu Walks on Graph brute force, dfs and similar, graphs, hashing	2300	x2033
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6806
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	x4016
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10658
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16769
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20556
1392I	Kevin and Grid fft, graphs, math	3300	x205
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x781
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x515
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x2185
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3546
1392D	Omkar and Bed Wars dp, greedy	1700	x8988
1392C	Omkar and Waterslide greedy, implementation	1200	x18891
1392B	Omkar and Infinity Clock implementation, math	800	x18506
1392A	Omkar and Password greedy, math	800	x20809
1391E	Pairs of Pairs constructive algorithms, dfs and similar, graphs, greedy, trees	2600	x1724
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x5348
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x15085
1391B	Fix You brute force, greedy, implementation	800	x27488
1391A	Suborrays constructive algorithms, math	800	x24454
1389G	Directing Edges dfs and similar, dp, graphs, trees	2800	x397