Problemset - Codeforces

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Codeforces Round #727 (Div. 2)
26:30:59
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Problems

#	Name
1517E	Group Photo binary search, data structures, implementation, two pointers	2500	x709
1517D	Explorer Space dp, graphs, shortest paths	1800	x4896
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x8717
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x9999
1517A	Sum of 2050 greedy, math	800	x18749
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x526
1516D	Cut binary search, data structures, dp, graphs, number theory, two pointers	2100	x2412
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x7224
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x10760
1516A	Tit for Tat greedy	800	x18055
1515I	Phoenix and Diamonds binary search, data structures, sortings	3400	x81
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x103
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x530
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x958
1515E	Phoenix and Computers combinatorics, dp, math	2200	x1968
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x7514
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x9993
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x15055
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x16366
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x307
1514D	Cut and Stick binary search, data structures, greedy, implementation, sortings	2000	x2802
1514C	Product 1 Modulo N greedy, number theory	1600	x8065
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x12705
1514A	Perfectly Imperfect Array math, number theory	800	x18052
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x595
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x984
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x2874
1513C	Add One dp, matrices	1600	x7418
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x8429
1513A	Array and Peaks constructive algorithms, implementation	800	x15836
1512G	Short Task brute force, dp, math, number theory	1700	x4334
1512F	Education brute force, dp, greedy, implementation	1900	x3676
1512E	Permutation by Sum brute force, greedy, math	1600	x6077
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x12143
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x12174
1512B	Almost Rectangle implementation	800	x19126
1512A	Spy Detected! brute force, implementation	800	x26548
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x353
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x195
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x1711
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x7007
1511C	Yet Another Card Deck brute force, data structures, implementation, trees	1100	x14466
1511B	GCD Length constructive algorithms, math, number theory	1100	x14568
1511A	Review Site greedy	800	x19868
1510K	King's Task brute force, graphs, implementation	1200	x3277
1510J	Japanese Game constructive algorithms, math	2700	x216
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x250
1510H	Hard Optimization dp	3200	x50
1510G	Guide	2100	x925
1510F	Fiber Shape	2800	x30
1510E	Equilibrium Point /\textbackslash/\textbackslash	2700	x135
1510D	Digits dp, math, number theory	2100	x1131
1510C	Cactus Not Enough dfs and similar, graph matchings, graphs	2900	x110
1510B	Button Lock flows, graph matchings, graphs	2600	x414
1510A	ASCII Automata Art	3100	x88
1509C	The Sports Festival dp, greedy	1800	x7002
1509B	TMT Document greedy	1100	x14733
1509A	Average Height constructive algorithms	800	x19422
1508F	Optimal Encoding brute force, data structures	3500	x67
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x189
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x233
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x812
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x2380
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x4223
1506G	Maximize the Remaining String brute force, data structures, dp, greedy, strings	2000	x2753
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x2188
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x7959
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x11599
1506C	Double-ended Strings brute force, implementation, strings	1000	x15545
1506B	Partial Replacement greedy, implementation	1100	x14721
1506A	Strange Table math	800	x22050
1505I	Mysterious language again, seriously? *special problem	2200	x259
1505H	L BREAK into program *special problem	2500	x265
1505G	Encoded message *special problem, implementation	2600	x182
1505F	Math *special problem, math	2200	x932
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1342
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x394
1505C	Fibonacci Words *special problem, implementation	1400	x4353
1505B	DMCA *special problem, implementation, number theory	1600	x3978
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x9337
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x11703
1504A	Déjà Vu constructive algorithms, strings	800	x16216
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x61
1503E	2-Coloring combinatorics, dp, math	3100	x187
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x626
1503C	Travelling Salesman Problem binary search, data structures, dp, greedy, shortest paths, sortings, two pointers	2200	x2153
1503B	3-Coloring constructive algorithms, games, interactive	1700	x5061
1503A	Balance the Bits constructive algorithms, greedy	1600	x8807
1501B	Napoleon Cake dp, implementation, sortings	900	x11441
1501A	Alexey and Train implementation	800	x9977
1500F	Cupboards Jumps dp	3500	x47
1500E	Subset Trick binary search, data structures	3300	x106
1500D	Tiles for Bathroom data structures, sortings, two pointers	2900	x191
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x460
1500B	Two chandeliers binary search, brute force, chinese remainder theorem, math, number theory	2200	x1418
1500A	Going Home brute force, hashing, implementation, math	1800	x6252
1499G	Graph Coloring data structures, graphs, interactive	3100	x73
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x582
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x889
1499D	The Number of Pairs dp, math, number theory	2100	x3339