Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1601E	Phys Ed Online data structures, dp, greedy	2900	x477
1601D	Difficult Mountain data structures, dp, greedy, sortings	2700	x1452
1601C	Optimal Insertion data structures, divide and conquer, dp, greedy, sortings	2300	x2010
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x4957
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14580
1600J	Robot Factory bitmasks, dfs and similar	1400	x3910
1600F	Party Organization brute force, math, probabilities	2300	x488
1600E	Array Game games, greedy, two pointers	1900	x2098
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x301
1599I	Desert data structures, graphs	2700	x119
1599H	Hidden Fortress interactive, math	2100	x1059
1599G	Shortest path brute force, geometry, math, shortest paths	2700	x371
1599F	Mars hashing	2700	x336
1599E	Two Arrays data structures, matrices	3200	x67
1599D	Bubble Popping	3200	x30
1599C	Bubble Strike combinatorics, math, probabilities, ternary search	2000	x1657
1599B	Restaurant Game	3100	x142
1599A	Weights constructive algorithms, greedy, two pointers	2600	x681
1598G	The Sum of Good Numbers hashing, math, string suffix structures, strings	3200	x332
1598F	RBS binary search, bitmasks, brute force, data structures, dp	2400	x1419
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x2302
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8672
1598C	Delete Two Elements data structures, dp, implementation, math, two pointers	1200	x20796
1598B	Groups brute force, implementation	1000	x16061
1598A	Computer Game brute force, dfs and similar, dp, implementation	800	x23321
1594F	Ideal Farm constructive algorithms, math	2400	x1344
1594E2	Rubik's Cube Coloring (hard version) brute force, dp, implementation, math, trees	2300	x1485
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x11087
1594D	The Number of Imposters constructive algorithms, dfs and similar, dp, dsu, graphs	1700	x7493
1594C	Make Them Equal brute force, greedy, math, strings	1200	x19426
1594B	Special Numbers bitmasks, math	1100	x19883
1594A	Consecutive Sum Riddle math	800	x24607
1593G	Changing Brackets constructive algorithms, data structures, dp, greedy	2200	x1692
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2441
1593E	Gardener and Tree brute force, data structures, dfs and similar, greedy, implementation, trees	1600	x12396
1593D2	Half of Same brute force, math, number theory	1900	x4991
1593D1	All are Same math, number theory	1100	x20141
1593C	Save More Mice binary search, greedy, greedy	1000	x24818
1593B	Make it Divisible by 25 dfs and similar, dp, greedy, math, math	900	x27105
1593A	Elections math	800	x36690
1592F2	Alice and Recoloring 2 constructive algorithms, flows, graph matchings, greedy	2800	x725
1592F1	Alice and Recoloring 1 constructive algorithms, greedy	2600	x860
1592E	Bored Bakry bitmasks, greedy, math, two pointers	2400	x1640
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x2231
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7982
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x15971
1592A	Gamer Hemose binary search, greedy, math, sortings	800	x22165
1588F	Jumping Through the Array binary search, data structures, graphs, two pointers	3500	x284
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x192
1585G	Poachers dp, games, graphs, trees	2500	x182
1585F	Non-equal Neighbours combinatorics, dp, math	2400	x1238
1585E	Frequency Queries data structures, dfs and similar, trees	2400	x1056
1585D	Yet Another Sorting Problem data structures, math	1900	x3850
1585C	Minimize Distance greedy	1300	x12005
1585B	Array Eversion greedy	900	x15098
1585A	Life of a Flower implementation	800	x17748
1584G	Eligible Segments geometry	3200	x209
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x970
1584E	Game with Stones binary search, data structures, games, greedy	2300	x1276
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x3671
1584C	Two Arrays greedy, math, sortings	900	x16342
1584B	Coloring Rectangles greedy, math	1000	x13339
1584A	Mathematical Addition math	800	x14892
1583H	Omkar and Tours data structures, divide and conquer, sortings, trees	3300	x323
1583G	Omkar and Time Travel data structures, math	3000	x453
1583F	Defender of Childhood Dreams bitmasks, constructive algorithms, divide and conquer	2500	x1300
1583E	Moment of Bloom constructive algorithms, dfs and similar, graph matchings, graphs, greedy, trees	2200	x2219
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5383
1583C	Omkar and Determination data structures, dp	1700	x6935
1583B	Omkar and Heavenly Tree constructive algorithms, trees	1200	x12231
1583A	Windblume Ode math, number theory	800	x13725
1582G	Kuzya and Homework data structures, number theory	2600	x594
1582F2	Korney Korneevich and XOR (hard version) binary search, brute force, dp, greedy, two pointers	2400	x1810
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5576
1582E	Pchelyonok and Segments binary search, data structures, dp, greedy, math	2000	x3737
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10512
1582C	Grandma Capa Knits a Scarf brute force, data structures, greedy, strings, two pointers	1200	x15609
1582B	Luntik and Subsequences combinatorics, math	900	x20410
1582A	Luntik and Concerts math	800	x18508
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x11326
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13430
1580F	Problems for Codeforces combinatorics, fft, math	3300	x133
1580E	Railway Construction brute force, constructive algorithms, data structures, graphs, shortest paths	3400	x73
1580D	Subsequence brute force, divide and conquer, dp, greedy, trees	2900	x874
1580C	Train Maintenance brute force, data structures, implementation	2200	x1797
1580B	Mathematics Curriculum brute force, combinatorics, dp, trees	2600	x1039
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3654
1579G	Minimal Coverage dp	2200	x2377
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4783
1579E2	Array Optimization by Deque data structures, greedy	1700	x6652
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x21607
1579D	Productive Meeting constructive algorithms, graphs, greedy	1400	x16034
1579C	Ticks greedy, implementation	1500	x10576
1579B	Shifting Sort implementation, sortings	1100	x18139
1579A	Casimir's String Solitaire math, strings	800	x38814
1578M	The Mind constructive algorithms, interactive, probabilities	2700	x456
1578L	Labyrinth binary search, dsu, greedy	2400	x1141
1578K	Kingdom of Islands brute force, graphs, implementation	2800	x366
1578J	Just Kingdom brute force, data structures, dfs and similar	3100	x234
1578I	Interactive Rays geometry, interactive	3300	x63