Problemset - Codeforces

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Codeforces Round (Div. 1 + Div. 2)
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Problems

#	Name
1578K	Kingdom of Islands brute force, graphs, implementation	2800	x346
1578J	Just Kingdom brute force, data structures, dfs and similar	3100	x220
1578I	Interactive Rays geometry, interactive	3300	x58
1578H	Higher Order Functions implementation, strings	1700	x1990
1578G	Game of Chance math, probabilities	3500	x34
1578F	Framing Pictures geometry	2900	x148
1578E	Easy Scheduling implementation, math	1200	x3734
1578D	Dragon Curve	3200	x44
1578C	Cactus Lady and her Cing	3500	x8
1578B	Building Forest Trails data structures, dsu	2800	x321
1578A	Anti-Tetris constructive algorithms, graphs, shortest paths	2800	x328
1576A	Communication Routing Challenge *special problem
1575M	Managing Telephone Poles data structures, geometry	2400	x239
1575L	Longest Array Deconstruction data structures, divide and conquer, dp, sortings	2100	x1282
1575K	Knitting Batik implementation, math	2200	x622
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x3653
1575I	Illusions of the Desert data structures, trees	2300	x844
1575H	Holiday Wall Ornaments dp, strings	2200	x587
1575G	GCD Festival math, number theory	2200	x642
1575F	Finding Expected Value math	2900	x109
1575E	Eye-Pleasing City Park Tour data structures, trees	2600	x304
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2419
1575C	Cyclic Sum data structures, fft, number theory	3000	x155
1575B	Building an Amusement Park binary search, geometry	2300	x450
1575A	Another Sorting Problem data structures, sortings, strings	1100	x4229
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x588
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x874
1574D	The Strongest Build binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation	2000	x4364
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x16594
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17065
1574A	Regular Bracket Sequences constructive algorithms	800	x21347
1573B	Swaps greedy, math, sortings	1400	x14185
1573A	Countdown greedy	800	x20930
1572F	Stations data structures	3400	x240
1572E	Polygon binary search, dp, geometry	3000	x279
1572D	Bridge Club flows, graph matchings, graphs, greedy	2800	x472
1572C	Paint dp, greedy	2700	x1397
1572B	Xor of 3 brute force, constructive algorithms, greedy, two pointers	2500	x1749
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x8565
1571J	Two Railroads *special problem	3000	x36
1571I	Physical Examination *special problem, binary search, data structures	3200	x54
1571H	Laser Beams *special problem, geometry, probabilities	2900	x44
1571G	A Battle Against a Dragon *special problem, data structures, dp	2500	x71
1571F	Kotlinforces *special problem, constructive algorithms, dp	2000	x177
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x325
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x321
1571C	Rhyme *special problem, implementation	1800	x361
1571B	Epic Novel *special problem, math	1300	x685
1571A	Sequence of Comparisons *special problem	800	x1254
1569F	Palindromic Hamiltonian Path brute force, dfs and similar, dp, graphs, hashing	3000	x228
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x785
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4294
1569C	Jury Meeting combinatorics, math	1500	x11671
1569B	Chess Tournament constructive algorithms	1000	x18593
1569A	Balanced Substring implementation	800	x25288
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x728
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3512
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4410
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11867
1567B	MEXor Mixup bitmasks, greedy	1000	x21605
1567A	Domino Disaster implementation, strings	800	x29681
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x123
1566G	Four Vertices constructive algorithms, data structures, graphs, greedy, implementation, shortest paths	3100	x329
1566F	Points Movement data structures, dp, greedy, implementation, sortings	2600	x928
1566E	Buds Re-hanging constructive algorithms, dfs and similar, dp, greedy, trees	2000	x4022
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7706
1566D1	Seating Arrangements (easy version) data structures, greedy, sortings	1100	x13794
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17055
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19130
1566A	Median Maximization binary search, greedy, math	800	x22784
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x373
1562E	Rescue Niwen! dp, greedy, string suffix structures, strings	2500	x1330
1562D2	Two Hundred Twenty One (hard version) data structures, math	2200	x2079
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6191
1562C	Rings constructive algorithms, math	1500	x12933
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19199
1562A	The Miracle and the Sleeper greedy, math	800	x25209
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5397
1561C	Deep Down Below binary search, greedy, sortings	1300	x13596
1561A	Simply Strange Sort brute force, implementation, sortings	800	x16459
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x4210
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x5933
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x7684
1560D	Make a Power of Two greedy, math, strings	1300	x17690
1560C	Infinity Table implementation, math	800	x26139
1560B	Who's Opposite? math	800	x34787
1560A	Dislike of Threes implementation	800	x56212
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2219
1559D2	Mocha and Diana (Hard Version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers	2500	x2538
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13273
1559C	Mocha and Hiking constructive algorithms, graphs	1200	x19779
1559B	Mocha and Red and Blue dp, greedy	900	x22024
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x28765
1558F	Strange Sort data structures, sortings	3300	x353
1558E	Down Below binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths	3000	x437
1558D	Top-Notch Insertions combinatorics, data structures	2600	x926
1558C	Bottom-Tier Reversals constructive algorithms, greedy	2000	x3162
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4618
1558A	Charmed by the Game brute force, math	1300	x10936
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x691