Problemset - Codeforces

Problems

#	Name
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5428
1583C	Omkar and Determination data structures, dp	1700	x6976
1583B	Omkar and Heavenly Tree constructive algorithms, trees	1200	x12354
1583A	Windblume Ode math, number theory	800	x13770
1582G	Kuzya and Homework data structures, number theory	2600	x597
1582F2	Korney Korneevich and XOR (hard version) binary search, brute force, dp, greedy, two pointers	2400	x1851
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5697
1582E	Pchelyonok and Segments binary search, data structures, dp, greedy, math	2000	x3792
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10604
1582C	Grandma Capa Knits a Scarf brute force, data structures, greedy, strings, two pointers	1200	x15953
1582B	Luntik and Subsequences combinatorics, math	900	x20929
1582A	Luntik and Concerts math	800	x18608
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x11482
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13506
1580F	Problems for Codeforces combinatorics, fft, math	3300	x133
1580E	Railway Construction brute force, constructive algorithms, data structures, graphs, shortest paths	3400	x76
1580D	Subsequence brute force, divide and conquer, dp, greedy, trees	2900	x932
1580C	Train Maintenance brute force, data structures, implementation	2200	x1834
1580B	Mathematics Curriculum brute force, combinatorics, dp, trees	2600	x1057
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3700
1579G	Minimal Coverage dp	2200	x2405
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4827
1579E2	Array Optimization by Deque data structures, greedy	1700	x6717
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x21830
1579D	Productive Meeting constructive algorithms, graphs, greedy	1400	x16197
1579C	Ticks greedy, implementation	1500	x10631
1579B	Shifting Sort implementation, sortings	1100	x18216
1579A	Casimir's String Solitaire math, strings	800	x39100
1578M	The Mind constructive algorithms, interactive, probabilities	2700	x457
1578L	Labyrinth binary search, dsu, greedy	2400	x1220
1578K	Kingdom of Islands brute force, graphs, implementation	2800	x371
1578J	Just Kingdom brute force, data structures, dfs and similar	3100	x238
1578I	Interactive Rays geometry, interactive	3300	x63
1578H	Higher Order Functions implementation, strings	1700	x2038
1578G	Game of Chance math, probabilities	3500	x38
1578F	Framing Pictures geometry	2900	x164
1578E	Easy Scheduling implementation, math	1200	x3848
1578D	Dragon Curve	3200	x46
1578C	Cactus Lady and her Cing	3500	x9
1578B	Building Forest Trails data structures, dsu	2800	x339
1578A	Anti-Tetris constructive algorithms, graphs, shortest paths	2800	x356
1576A	Communication Routing Challenge *special problem
1575M	Managing Telephone Poles data structures, geometry	2400	x252
1575L	Longest Array Deconstruction data structures, divide and conquer, dp, sortings	2100	x1433
1575K	Knitting Batik implementation, math	2200	x715
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x3847
1575I	Illusions of the Desert data structures, trees	2300	x914
1575H	Holiday Wall Ornaments dp, strings	2200	x630
1575G	GCD Festival math, number theory	2200	x713
1575F	Finding Expected Value math	2900	x120
1575E	Eye-Pleasing City Park Tour data structures, trees	2600	x337
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2602
1575C	Cyclic Sum data structures, fft, number theory	3000	x165
1575B	Building an Amusement Park binary search, geometry	2300	x480
1575A	Another Sorting Problem data structures, sortings, strings	1100	x4628
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x632
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x917
1574D	The Strongest Build binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation	2000	x4527
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x17264
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17369
1574A	Regular Bracket Sequences constructive algorithms	800	x21951
1573B	Swaps greedy, math, sortings	1400	x14658
1573A	Countdown greedy	800	x21229
1572F	Stations data structures	3400	x264
1572E	Polygon binary search, dp, geometry	3000	x298
1572D	Bridge Club flows, graph matchings, graphs, greedy	2800	x516
1572C	Paint dp, greedy	2700	x1502
1572B	Xor of 3 brute force, constructive algorithms, greedy, two pointers	2500	x1858
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x9128
1571J	Two Railroads *special problem	3000	x41
1571I	Physical Examination *special problem, binary search, data structures	3200	x59
1571H	Laser Beams *special problem, geometry, probabilities	2900	x49
1571G	A Battle Against a Dragon *special problem, data structures, dp	2500	x76
1571F	Kotlinforces *special problem, constructive algorithms, dp	2000	x202
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x340
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x335
1571C	Rhyme *special problem, implementation	1800	x380
1571B	Epic Novel *special problem, math	1300	x721
1571A	Sequence of Comparisons *special problem	800	x1326
1569F	Palindromic Hamiltonian Path brute force, dfs and similar, dp, graphs, hashing	3000	x262
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x813
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4403
1569C	Jury Meeting combinatorics, math	1500	x12114
1569B	Chess Tournament constructive algorithms	1000	x18942
1569A	Balanced Substring implementation	800	x25623
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x757
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3721
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4539
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12239
1567B	MEXor Mixup bitmasks, greedy	1000	x23458
1567A	Domino Disaster implementation, strings	800	x30222
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x129
1566G	Four Vertices constructive algorithms, data structures, graphs, greedy, implementation, shortest paths	3100	x343
1566F	Points Movement data structures, dp, greedy, implementation, sortings	2600	x961
1566E	Buds Re-hanging constructive algorithms, dfs and similar, dp, greedy, trees	2000	x4170
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7893
1566D1	Seating Arrangements (easy version) data structures, greedy, sortings	1100	x14059
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17688
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19757
1566A	Median Maximization binary search, greedy, math	800	x23568