Problemset - Codeforces

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Codeforces Round 940 (Div. 2) and CodeCraft-23
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constructive algorithms

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Problems

#	Name
1909H	Parallel Swaps Sort constructive algorithms, data structures	3500	x56
1863I	Redundant Routes constructive algorithms, dp, trees	3500	x66
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x68
1868E	Min-Sum-Max constructive algorithms, dp, greedy	3500	x71
1750H	BinaryStringForces constructive algorithms, data structures, dp	3500	x71
1446E	Long Recovery constructive algorithms, dfs and similar	3500	x74
1276E	Four Stones constructive algorithms	3500	x77
1349E	Slime and Hats constructive algorithms, dp, greedy	3500	x80
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x87
1656I	Neighbour Ordering constructive algorithms, graphs	3500	x92
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x95
1718E	Impressionism constructive algorithms, graphs, implementation, math	3500	x101
1685D2	Permutation Weight (Hard Version) constructive algorithms, greedy	3500	x101
1827F	Copium Permutation constructive algorithms, data structures, greedy	3500	x104
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x121
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x125
1774H	Maximum Permutation constructive algorithms	3500	x127
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x138
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x142
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x154
1919G	Tree LGM constructive algorithms, divide and conquer, games, trees	3500	x162
1053E	Euler tour constructive algorithms, trees	3500	x192
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x210
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x210
1270I	Xor on Figures constructive algorithms, fft, math	3500	x225
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x326
1267C	Cactus Revenge constructive algorithms	3500	x377
1264F	Beautiful Fibonacci Problem constructive algorithms, number theory	3500	x824
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x55
1580E	Railway Construction brute force, constructive algorithms, data structures, graphs, shortest paths	3400	x63
1078E	Negative Time Summation constructive algorithms	3400	x85
1887F	Minimum Segments constructive algorithms	3400	x111
1205F	Beauty of a Permutation constructive algorithms, math	3400	x120
1852E	Rivalries constructive algorithms, data structures, greedy	3400	x155
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x232
1827E	Bus Routes binary search, constructive algorithms, dfs and similar, greedy, trees	3400	x355
1710D	Recover the Tree constructive algorithms, trees	3400	x404
1097E	Egor and an RPG game constructive algorithms, greedy	3400	x457
1912C	Cactus Transformation constructive algorithms	3300	x44
737F	Dirty plates constructive algorithms, math	3300	x68
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x111
1737F	Ela and Prime GCD constructive algorithms, math, number theory	3300	x116
1530G	What a Reversal constructive algorithms	3300	x131
1615G	Maximum Adjacent Pairs constructive algorithms, graph matchings	3300	x146
1060H	Sophisticated Device constructive algorithms	3300	x201
1876E	Ball-Stackable constructive algorithms, data structures, dp, trees	3300	x213
1054G	New Road Network constructive algorithms, greedy, math	3300	x250
1495F	Squares constructive algorithms, data structures, dp, graphs, trees	3300	x274
1237H	Balanced Reversals constructive algorithms	3300	x298
1148G	Gold Experience constructive algorithms, graphs, math, number theory, probabilities	3300	x311
1375H	Set Merging constructive algorithms, divide and conquer	3300	x393
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x410
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x30
923F	Public Service constructive algorithms, graphs, trees	3200	x71
1267H	Help BerLine constructive algorithms	3200	x100
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x108
1045E	Ancient civilizations constructive algorithms, geometry	3200	x117
1242E	Planar Perimeter constructive algorithms, graphs	3200	x126
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x168
933E	A Preponderant Reunion constructive algorithms, dp	3200	x184
1781G	Diverse Coloring constructive algorithms, trees	3200	x212
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x247
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x266
543E	Listening to Music constructive algorithms, data structures	3200	x275
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x311
1396E	Distance Matching constructive algorithms, dfs and similar, trees	3200	x318
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x357
1336D	Yui and Mahjong Set constructive algorithms, interactive	3200	x456
611H	New Year and Forgotten Tree constructive algorithms, flows, graphs	3200	x575
566E	Restoring Map bitmasks, constructive algorithms, trees	3200	x599
1025G	Company Acquisitions constructive algorithms, math	3200	x600
1762G	Unequal Adjacent Elements constructive algorithms, sortings	3100	x96
720C	Homework constructive algorithms	3100	x96
317E	Princess and Her Shadow constructive algorithms, shortest paths	3100	x150
1740G	Dangerous Laser Power constructive algorithms, dsu, sortings	3100	x176
331E2	Deja Vu constructive algorithms, dp	3100	x215
1286F	Harry The Potter brute force, constructive algorithms, dp, fft, implementation, math	3100	x230
715D	Create a Maze constructive algorithms	3100	x231
1864G	Magic Square combinatorics, constructive algorithms, implementation	3100	x250
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x263
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x271
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x323
1566G	Four Vertices constructive algorithms, data structures, graphs, greedy, implementation, shortest paths	3100	x326
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x327
1168E	Xor Permutations constructive algorithms, math	3100	x352
1329D	Dreamoon Likes Strings constructive algorithms, data structures	3100	x365
804E	The same permutation constructive algorithms	3100	x407
1119G	Get Ready for the Battle constructive algorithms, implementation	3100	x408
538G	Berserk Robot constructive algorithms, math, sortings	3100	x438
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x521
1110G	Tree-Tac-Toe constructive algorithms, games, trees	3100	x572
1070M	Algoland and Berland constructive algorithms, divide and conquer, geometry	3000	x63
457E	Flow Optimality constructive algorithms, flows, math	3000	x80
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x86
1758F	Decent Division constructive algorithms, data structures	3000	x151
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x156
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x163
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x241
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x243
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x249

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