Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
13:02:14
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Problems

#	Name
1529A	Eshag Loves Big Arrays constructive algorithms, greedy, math	800	x29437
1528F	AmShZ Farm combinatorics, fft, math	3300	x277
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x513
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms, graphs, shortest paths	2500	x1401
1528C	Trees of Tranquillity data structures, dfs and similar, greedy, trees	2300	x2515
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8510
1528A	Parsa's Humongous Tree dfs and similar, divide and conquer, dp, greedy, trees	1600	x14013
1527E	Partition Game binary search, data structures, divide and conquer, dp	2500	x2100
1527D	MEX Tree combinatorics, dfs and similar, implementation, math, trees	2400	x1841
1527C	Sequence Pair Weight hashing, implementation, math	1600	x13175
1527B2	Palindrome Game (hard version) constructive algorithms, games	1900	x7609
1527B1	Palindrome Game (easy version) constructive algorithms, games	1200	x24543
1527A	And Then There Were K bitmasks	800	x34184
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x253
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x1032
1526D	Kill Anton brute force, constructive algorithms, data structures, math, strings	2200	x2360
1526C2	Potions (Hard Version) data structures, greedy	1600	x21248
1526C1	Potions (Easy Version) brute force, data structures, dp, greedy	1500	x21416
1526B	I Hate 1111 dp, math, number theory	1400	x29046
1526A	Mean Inequality constructive algorithms, sortings	800	x23906
1525F	Goblins And Gnomes brute force, dp, flows, graph matchings	2800	x319
1525E	Assimilation IV combinatorics, dp, math, probabilities, two pointers	2100	x1974
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9432
1525C	Robot Collisions data structures, greedy, implementation, sortings	2000	x4343
1525B	Permutation Sort constructive algorithms, greedy	900	x24261
1525A	Potion-making math, number theory	800	x25110
1523H	Hopping Around the Array data structures, dp	3500	x235
1523G	Try Booking data structures, divide and conquer	3200	x404
1523F	Favorite Game bitmasks, dp	3300	x405
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1542
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2088
1523C	Compression and Expansion brute force, data structures, greedy, implementation, trees	1600	x8614
1523B	Lord of the Values constructive algorithms	1100	x11980
1523A	Game of Life implementation	800	x13414
1521E	Nastia and a Beautiful Matrix binary search, constructive algorithms, dp, greedy	2700	x653
1521D	Nastia Plays with a Tree constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2500	x1814
1521C	Nastia and a Hidden Permutation constructive algorithms, interactive	2000	x4289
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20875
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x35642
1520G	To Go Or Not To Go? brute force, dfs and similar, graphs, greedy, implementation, shortest paths	2200	x3524
1520F2	Guess the K-th Zero (Hard version) binary search, constructive algorithms, data structures, interactive	2200	x2916
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x11025
1520E	Arranging The Sheep greedy, math	1400	x20194
1520D	Same Differences data structures, hashing, math	1200	x43317
1520C	Not Adjacent Matrix constructive algorithms	1000	x30816
1520B	Ordinary Numbers brute force, math, number theory	800	x43160
1520A	Do Not Be Distracted! brute force, implementation	800	x50014
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x391
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x810
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x14662
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x16116
1519B	The Cake Is a Lie dp, math	800	x30133
1519A	Red and Blue Beans math	800	x28370
1517H	Fly Around the World dp, geometry	3500	x65
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x417
1517F	Reunion combinatorics, dp, trees	3200	x449
1517E	Group Photo binary search, data structures, implementation, two pointers	2500	x955
1517D	Explorer Space dp, graphs, shortest paths	1800	x7384
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13099
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x13070
1517A	Sum of 2050 greedy, math	800	x25146
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x816
1516D	Cut binary search, data structures, dp, graphs, number theory, two pointers	2100	x4119
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11580
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18269
1516A	Tit for Tat greedy	800	x23169
1515I	Phoenix and Diamonds binary search, data structures, sortings	3400	x230
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x218
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x941
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1698
1515E	Phoenix and Computers combinatorics, dp, math	2200	x3393
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11182
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x16622
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24262
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x20032
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x591
1514D	Cut and Stick binary search, data structures, greedy, implementation, sortings	2000	x4112
1514C	Product 1 Modulo N greedy, number theory	1600	x14418
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x23135
1514A	Perfectly Imperfect Array math, number theory	800	x23847
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1206
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1418
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5089
1513C	Add One dp, matrices	1600	x13337
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13910
1513A	Array and Peaks constructive algorithms, implementation	800	x19200
1512G	Short Task brute force, dp, math, number theory	1700	x7870
1512F	Education brute force, dp, greedy, implementation	1900	x5979
1512E	Permutation by Sum brute force, greedy, math	1600	x10070
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x21849
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x19566
1512B	Almost Rectangle implementation	800	x25062
1512A	Spy Detected! brute force, implementation	800	x60524
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x704
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x419
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2472
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11096
1511C	Yet Another Card Deck brute force, data structures, implementation, trees	1100	x22384
1511B	GCD Length constructive algorithms, math, number theory	1100	x22076
1511A	Review Site greedy	800	x27208