Problemset - Codeforces

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Codeforces Round 1000 (Div. 2)
33:53:44
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Problems

#	Name
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1735
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2233
1523C	Compression and Expansion brute force, data structures, greedy, implementation, trees	1600	x8887
1521E	Nastia and a Beautiful Matrix binary search, constructive algorithms, dp, greedy	2700	x683
1521D	Nastia Plays with a Tree constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2500	x2006
1521C	Nastia and a Hidden Permutation constructive algorithms, interactive	2000	x4406
1520G	To Go Or Not To Go? brute force, dfs and similar, graphs, greedy, implementation, shortest paths	2200	x3790
1520F2	Guess the K-th Zero (Hard version) binary search, constructive algorithms, data structures, interactive	2200	x3076
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x12353
1520E	Arranging The Sheep greedy, math	1400	x22313
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x506
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x832
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x15633
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x17547
1517H	Fly Around the World dp, geometry	3500	x75
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x521
1517F	Reunion combinatorics, dp, trees	3200	x479
1517E	Group Photo binary search, data structures, implementation, two pointers	2500	x992
1517D	Explorer Space dp, graphs, shortest paths	1800	x7975
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13514
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x900
1516D	Cut binary search, data structures, dp, graphs, number theory, two pointers	2100	x4522
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x12160
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x20177
1515I	Phoenix and Diamonds binary search, data structures, sortings	3400	x295
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x257
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x1052
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1851
1515E	Phoenix and Computers combinatorics, dp, math	2200	x3734
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11559
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x17434
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x633
1514D	Cut and Stick binary search, data structures, greedy, implementation, sortings	2000	x4407
1514C	Product 1 Modulo N greedy, number theory	1600	x15629
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1298
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1543
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5637
1513C	Add One dp, matrices	1600	x14573
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x15339
1512G	Short Task brute force, dp, math, number theory	1700	x8407
1512F	Education brute force, dp, greedy, implementation	1900	x6342
1512E	Permutation by Sum brute force, greedy, math	1600	x10662
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x827
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x453
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2635
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11696
1510J	Japanese Game constructive algorithms, math	2700	x533
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x508
1510H	Hard Optimization dp	3200	x101
1510G	Guide	2100	x1323
1510F	Fiber Shape	2800	x59
1510E	Equilibrium Point /\textbackslash/\textbackslash	2700	x260
1510D	Digits dp, math, number theory	2100	x1965
1510C	Cactus Not Enough dfs and similar, graph matchings, graphs	2900	x221
1510B	Button Lock flows, graph matchings, graphs	2600	x872
1510A	ASCII Automata Art	3100	x157
1509C	The Sports Festival dp, greedy	1800	x13021
1508F	Optimal Encoding brute force, data structures	3500	x128
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x353
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x595
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1539
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x4076
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x6331
1506G	Maximize the Remaining String brute force, data structures, dp, greedy, strings	2000	x4423
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x3355
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x13316
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x22483
1505I	Mysterious language again, seriously? *special problem	2200	x564
1505H	L BREAK into program *special problem	2500	x517
1505G	Encoded message *special problem, implementation	2600	x309
1505F	Math *special problem, math	2200	x1523
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1817
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x811
1505C	Fibonacci Words *special problem, implementation	1400	x6499
1505B	DMCA *special problem, implementation, number theory	1600	x6235
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x185
1503E	2-Coloring combinatorics, dp, math	3100	x726
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x1142
1503C	Travelling Salesman Problem binary search, data structures, dp, greedy, shortest paths, sortings, two pointers	2200	x3500
1503B	3-Coloring constructive algorithms, games, interactive	1700	x7118
1503A	Balance the Bits constructive algorithms, greedy	1600	x13642
1500F	Cupboards Jumps dp	3500	x355
1500E	Subset Trick binary search, data structures	3300	x284
1500D	Tiles for Bathroom data structures, sortings, two pointers	2900	x482
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x826
1500B	Two chandeliers binary search, brute force, chinese remainder theorem, math, number theory	2200	x2114
1500A	Going Home brute force, hashing, implementation, math	1800	x8988
1499G	Graph Coloring data structures, graphs, interactive	3100	x204
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x1389
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1541
1499D	The Number of Pairs dp, math, number theory	2100	x6022
1499C	Minimum Grid Path brute force, data structures, greedy, math	1500	x12814
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x941
1498E	Two Houses brute force, graphs, greedy, interactive, sortings	2200	x1962
1498D	Bananas in a Microwave dfs and similar, dp, graphs, implementation	2200	x2357
1498C	Planar Reflections brute force, data structures, dp	1600	x9989
1497E2	Square-Free Division (hard version) data structures, dp, greedy, math, number theory, two pointers	2500	x1775
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x8483
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1569
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x17719