Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
2 days
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Problems

#	Name
1527B1	Palindrome Game (easy version) constructive algorithms, games	1200	x24090
1527A	And Then There Were K bitmasks	800	x33790
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x252
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x1016
1526D	Kill Anton brute force, constructive algorithms, data structures, math, strings	2200	x2345
1526C2	Potions (Hard Version) data structures, greedy	1600	x20887
1526C1	Potions (Easy Version) brute force, data structures, dp, greedy	1500	x21102
1526B	I Hate 1111 dp, math, number theory	1400	x28519
1526A	Mean Inequality constructive algorithms, sortings	800	x23830
1525F	Goblins And Gnomes brute force, dp, flows, graph matchings	2800	x316
1525E	Assimilation IV combinatorics, dp, math, probabilities, two pointers	2100	x1931
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9346
1525C	Robot Collisions data structures, greedy, implementation, sortings	2000	x4323
1525B	Permutation Sort constructive algorithms, greedy	900	x24153
1525A	Potion-making math, number theory	800	x25038
1523H	Hopping Around the Array data structures, dp	3500	x234
1523G	Try Booking data structures, divide and conquer	3200	x401
1523F	Favorite Game bitmasks, dp	3300	x394
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1522
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2075
1523C	Compression and Expansion brute force, data structures, greedy, implementation, trees	1600	x8574
1523B	Lord of the Values constructive algorithms	1100	x11951
1523A	Game of Life implementation	800	x13388
1521E	Nastia and a Beautiful Matrix binary search, constructive algorithms, dp, greedy	2700	x647
1521D	Nastia Plays with a Tree constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2500	x1801
1521C	Nastia and a Hidden Permutation constructive algorithms, interactive	2000	x4273
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20701
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x35208
1520G	To Go Or Not To Go? brute force, dfs and similar, graphs, greedy, implementation, shortest paths	2200	x3476
1520F2	Guess the K-th Zero (Hard version) binary search, constructive algorithms, data structures, interactive	2200	x2887
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x10879
1520E	Arranging The Sheep greedy, math	1400	x19856
1520D	Same Differences data structures, hashing, math	1200	x42357
1520C	Not Adjacent Matrix constructive algorithms	1000	x30539
1520B	Ordinary Numbers brute force, math, number theory	800	x42671
1520A	Do Not Be Distracted! brute force, implementation	800	x49442
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x386
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x799
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x14533
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x15906
1519B	The Cake Is a Lie dp, math	800	x29671
1519A	Red and Blue Beans math	800	x28259
1517H	Fly Around the World dp, geometry	3500	x64
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x411
1517F	Reunion combinatorics, dp, trees	3200	x435
1517E	Group Photo binary search, data structures, implementation, two pointers	2500	x945
1517D	Explorer Space dp, graphs, shortest paths	1800	x7297
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13040
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x13044
1517A	Sum of 2050 greedy, math	800	x25073
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x809
1516D	Cut binary search, data structures, dp, graphs, number theory, two pointers	2100	x4076
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11491
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x17999
1516A	Tit for Tat greedy	800	x23119
1515I	Phoenix and Diamonds binary search, data structures, sortings	3400	x224
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x211
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x929
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1679
1515E	Phoenix and Computers combinatorics, dp, math	2200	x3348
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11137
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x16433
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24073
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x19994
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x580
1514D	Cut and Stick binary search, data structures, greedy, implementation, sortings	2000	x4080
1514C	Product 1 Modulo N greedy, number theory	1600	x14208
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22586
1514A	Perfectly Imperfect Array math, number theory	800	x23764
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1196
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1408
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5016
1513C	Add One dp, matrices	1600	x13144
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13684
1513A	Array and Peaks constructive algorithms, implementation	800	x19167
1512G	Short Task brute force, dp, math, number theory	1700	x7775
1512F	Education brute force, dp, greedy, implementation	1900	x5914
1512E	Permutation by Sum brute force, greedy, math	1600	x9982
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x21631
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x19412
1512B	Almost Rectangle implementation	800	x24967
1512A	Spy Detected! brute force, implementation	800	x59589
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x697
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x417
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2444
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11019
1511C	Yet Another Card Deck brute force, data structures, implementation, trees	1100	x22043
1511B	GCD Length constructive algorithms, math, number theory	1100	x21914
1511A	Review Site greedy	800	x27129
1510K	King's Task brute force, graphs, implementation	1200	x5257
1510J	Japanese Game constructive algorithms, math	2700	x506
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x445
1510H	Hard Optimization dp	3200	x95
1510G	Guide	2100	x1255
1510F	Fiber Shape	2800	x57
1510E	Equilibrium Point /\textbackslash/\textbackslash	2700	x238
1510D	Digits dp, math, number theory	2100	x1791
1510C	Cactus Not Enough dfs and similar, graph matchings, graphs	2900	x204
1510B	Button Lock flows, graph matchings, graphs	2600	x701
1510A	ASCII Automata Art	3100	x149