Problemset - Codeforces

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Problems

#	Name
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14513
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22396
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x786
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x584
1616D	Keep the Average High dp, greedy, math	2000	x4695
1616C	Representative Edges brute force, geometry, implementation, math	1500	x11960
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x746
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1402
1615C	Menorah brute force, graphs, greedy, math	1600	x8040
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15197
1615A	Closing The Gap greedy, math	800	x20484
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9906
1613D	MEX Sequences dp, math	1900	x4432
1613A	Long Comparison implementation, math	900	x23940
1612D	X-Magic Pair math, number theory	1600	x8824
1612C	Chat Ban binary search, math	1300	x15778
1611B	Team Composition: Programmers and Mathematicians binary search, constructive algorithms, math	800	x28428
1611A	Make Even constructive algorithms, math	800	x30601
1610E	AmShZ and G.O.A.T. binary search, brute force, greedy, implementation, math	2300	x1627
1610D	Not Quite Lee combinatorics, dp, math, number theory	2000	x2576
1610A	Anti Light's Cell Guessing math	900	x15786
1609G	A Stroll Around the Matrix data structures, greedy, math	3000	x362
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16663
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1347
1608A	Find Array constructive algorithms, math	800	x18701
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16387
1607B	Odd Grasshopper math	900	x24545
1606E	Arena combinatorics, dp, math	2100	x3337
1606B	Update Files greedy, implementation, math	1100	x18230
1605E	Array Equalizer binary search, greedy, implementation, math, number theory, sortings, two pointers	2400	x996
1605A	A.M. Deviation math, number theory	800	x20322
1603F	October 18, 2017 combinatorics, dp, implementation, math	2700	x266
1603E	A Perfect Problem combinatorics, dp, math	3200	x400
1603C	Extreme Extension dp, greedy, math, number theory	2300	x1974
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13061
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16095
1601F	Two Sorts binary search, dfs and similar, math, meet-in-the-middle	3400	x167
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13204
1600F	Party Organization brute force, math, probabilities	2300	x432
1599H	Hidden Fortress interactive, math	2100	x1007
1599G	Shortest path brute force, geometry, math, shortest paths	2700	x357
1599C	Bubble Strike combinatorics, math, probabilities, ternary search	2000	x1553
1598G	The Sum of Good Numbers hashing, math, string suffix structures, strings	3200	x323
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x2237
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8397
1598C	Delete Two Elements data structures, dp, implementation, math, two pointers	1200	x20023
1594F	Ideal Farm constructive algorithms, math	2400	x1262
1594E2	Rubik's Cube Coloring (hard version) brute force, dp, implementation, math, trees	2300	x1446
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x10850
1594C	Make Them Equal brute force, greedy, math, strings	1200	x17864
1594B	Special Numbers bitmasks, math	1100	x18836
1594A	Consecutive Sum Riddle math	800	x23810
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2328
1593D2	Half of Same brute force, math, number theory	1900	x4791
1593D1	All are Same math, number theory	1100	x19559
1593B	Make it Divisible by 25 dfs and similar, dp, greedy, math, math	900	x25154
1593A	Elections math	800	x35513
1592E	Bored Bakry bitmasks, greedy, math, two pointers	2400	x1542
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x2157
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x15568
1592A	Gamer Hemose binary search, greedy, math, sortings	800	x21588
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x157
1585F	Non-equal Neighbours combinatorics, dp, math	2400	x1149
1585D	Yet Another Sorting Problem data structures, math	1900	x3626
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x3522
1584C	Two Arrays greedy, math, sortings	900	x15896
1584B	Coloring Rectangles greedy, math	1000	x13068
1584A	Mathematical Addition math	800	x14614
1583G	Omkar and Time Travel data structures, math	3000	x400
1583A	Windblume Ode math, number theory	800	x13527
1582E	Pchelyonok and Segments binary search, data structures, dp, greedy, math	2000	x3586
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10111
1582B	Luntik and Subsequences combinatorics, math	900	x18794
1582A	Luntik and Concerts math	800	x18260
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x11021
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13243
1580F	Problems for Codeforces combinatorics, fft, math	3300	x130
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4564
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x20873
1579A	Casimir's String Solitaire math, strings	800	x37779
1578G	Game of Chance math, probabilities	3500	x33
1578E	Easy Scheduling implementation, math	1200	x3730
1575K	Knitting Batik implementation, math	2200	x620
1575G	GCD Festival math, number theory	2200	x640
1575F	Finding Expected Value math	2900	x108
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x872
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17015
1573B	Swaps greedy, math, sortings	1400	x14137
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x318
1571B	Epic Novel *special problem, math	1300	x676
1569C	Jury Meeting combinatorics, math	1500	x11648
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3502
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4403
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11830
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x119
1566A	Median Maximization binary search, greedy, math	800	x22718
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x373
1562D2	Two Hundred Twenty One (hard version) data structures, math	2200	x2074
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6179
1562C	Rings constructive algorithms, math	1500	x12899