Problemset - Codeforces

Problems

#	Name
1987F1	Interesting Problem (Easy Version) dp	2500	x1118
1987E	Wonderful Tree! brute force, data structures, dfs and similar, dsu, greedy, trees	2000	x3389
1987D	World is Mine dp, games	1800	x7153
1987C	Basil's Garden dp, greedy	1200	x17313
1987B	K-Sort greedy	1000	x20418
1987A	Upload More RAM greedy, math	800	x25309
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory	2500	x1084
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory	2200	x1491
1986F	Non-academic Problem dfs and similar, graphs, trees	1900	x4555
1986E	Beautiful Array greedy, math, number theory, sortings	1700	x8802
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x15192
1986C	Update Queries data structures, greedy, sortings	1100	x22811
1986B	Matrix Stabilization brute force, data structures, greedy, sortings	1000	x26564
1986A	X Axis brute force, geometry, math, sortings	800	x40401
1985H2	Maximize the Largest Component (Hard Version) data structures, dfs and similar, dp, dsu, implementation	2200	x1528
1985H1	Maximize the Largest Component (Easy Version) brute force, data structures, dfs and similar, dsu, graphs, implementation	1700	x5591
1985G	D-Function combinatorics, math, number theory	1600	x9377
1985F	Final Boss binary search, data structures	1500	x15303
1985E	Secret Box brute force, combinatorics, math	1200	x19888
1985D	Manhattan Circle implementation, math	900	x34501
1985C	Good Prefixes greedy	1000	x32309
1985B	Maximum Multiple Sum brute force, math, number theory	800	x46218
1985A	Creating Words implementation, strings	800	x53658
1984H	Tower Capturing combinatorics, dp, geometry	3300	x168
1984G	Magic Trick II constructive algorithms, implementation, sortings	3200	x259
1984F	Reconstruction brute force, dp, math	2500	x938
1984E	Shuffle dp, greedy, trees	2400	x1398
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x3280
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x7400
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x16626
1984B	Large Addition implementation, math	1100	x18284
1984A	Strange Splitting constructive algorithms	800	x21136
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x210
1983F	array-value binary search, bitmasks, data structures, greedy, two pointers	2500	x1194
1983E	I Love Balls combinatorics, math, probabilities	2300	x2002
1983D	Swap Dilemma constructive algorithms, data structures, divide and conquer, greedy, math, sortings	1700	x8189
1983C	Have Your Cake and Eat It Too binary search, brute force, greedy, implementation	1400	x12532
1983B	Corner Twist constructive algorithms, greedy, implementation, math	1200	x16085
1983A	Array Divisibility constructive algorithms, math	800	x25613
1982F	Sorting Problem Again binary search, data structures, sortings	2600	x952
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1596
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x7145
1982C	Boring Day binary search, data structures, dp, greedy, two pointers	1200	x17519
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x16942
1982A	Soccer greedy, implementation, math, sortings	800	x25101
1981F	Turtle and Paths on a Tree data structures, dp, trees	3000	x272
1981E	Turtle and Intersected Segments data structures, dsu, graphs, greedy	2600	x902
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1662
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5326
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x13724
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math	800	x22274
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x1245
1980F2	Field Division (hard version) math, sortings	2400	x995
1980F1	Field Division (easy version) data structures, math, sortings	1900	x3738
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x10502
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x14286
1980C	Sofia and the Lost Operations constructive algorithms, greedy	1300	x18599
1980B	Choosing Cubes sortings, sortings	800	x34666
1980A	Problem Generator math	800	x40601
1979F	Kostyanych's Theorem brute force, constructive algorithms, graphs, interactive	2900	x315
1979E	Manhattan Triangle binary search, constructive algorithms, data structures, geometry, implementation, two pointers	2400	x1441
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6628
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x18762
1979B	XOR Sequences bitmasks, greedy	1000	x22586
1979A	Guess the Maximum brute force, greedy, implementation	800	x29021
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x1337
1978E	Computing Machine brute force, data structures, dp, greedy, implementation	2000	x3814
1978D	Elections data structures, greedy, implementation, math	1600	x11293
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x14944
1978B	New Bakery binary search, greedy, math, ternary search	800	x22336
1978A	Alice and Books constructive algorithms, greedy, sortings	800	x25659
1977E	Tensor constructive algorithms, graphs, interactive	2600	x681
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1850
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6755
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17630
1977A	Little Nikita math	800	x32018
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees	2800	x587
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees	2500	x1038
1976D	Invertible Bracket Sequences binary search, combinatorics, data structures, divide and conquer, implementation, two pointers	2000	x4607
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x10392
1976B	Increase/Decrease/Copy greedy, implementation	1100	x22265
1976A	Verify Password implementation, sortings, strings	800	x28560
1975I	Mind Bloom dp	3500	x99
1975H	378QAQ and Core greedy, strings	3500	x116
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x224
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x827
1975E	Chain Queries binary search, data structures, dfs and similar, implementation, trees	2100	x2323
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x6020
1975C	Chamo and Mocha's Array binary search, brute force, greedy	1200	x14550
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x17839
1975A	Bazoka and Mocha's Array brute force, greedy, implementation, sortings	800	x18488
1974G	Money Buys Less Happiness Now data structures, greedy, sortings	2000	x4291
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x3570
1974E	Money Buys Happiness dp	1800	x8040
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x14821
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x15780
1974B	Symmetric Encoding implementation, sortings, strings	800	x30235
1974A	Phone Desktop greedy, math	800	x33224
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x229
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x799