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Name
343C
Read Time
binary search
,
greedy
,
two pointers
1900
x2909
893D
Credit Card
data structures
,
dp
,
greedy
,
implementation
1900
x2931
321B
Ciel and Duel
dp
,
flows
,
greedy
1900
x2972
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x3026
1926G
Vlad and Trouble at MIT
dfs and similar
,
dp
,
flows
,
graphs
,
greedy
,
implementation
,
trees
1900
x3043
959D
Mahmoud and Ehab and another array construction task
constructive algorithms
,
greedy
,
math
,
number theory
1900
x3058
1477B
Nezzar and Binary String
data structures
,
greedy
1900
x3084
803D
Magazine Ad
binary search
,
greedy
1900
x3095
722D
Generating Sets
binary search
,
data structures
,
dfs and similar
,
greedy
,
strings
,
trees
1900
x3097
1133F2
Spanning Tree with One Fixed Degree
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
1900
x3125
981D
Bookshelves
bitmasks
,
dp
,
greedy
1900
x3179
708B
Recover the String
constructive algorithms
,
greedy
,
implementation
,
math
1900
x3208
1801C
Music Festival
binary search
,
data structures
,
dp
,
greedy
,
sortings
1900
x3250
839B
Game of the Rows
brute force
,
greedy
,
implementation
1900
x3267
1774E
Two Chess Pieces
dfs and similar
,
dp
,
greedy
,
trees
1900
x3329
1361B
Johnny and Grandmaster
greedy
,
implementation
,
math
,
sortings
1900
x3394
1677C
Tokitsukaze and Two Colorful Tapes
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1900
x3428
1819B
The Butcher
geometry
,
greedy
,
implementation
,
sortings
,
two pointers
1900
x3451
1015E2
Stars Drawing (Hard Edition)
binary search
,
dp
,
greedy
1900
x3479
1041E
Tree Reconstruction
constructive algorithms
,
data structures
,
graphs
,
greedy
1900
x3520
1060D
Social Circles
greedy
,
math
1900
x3572
1808C
Unlucky Numbers
brute force
,
dp
,
greedy
,
implementation
1900
x3605
1847D
Professor Higashikata
data structures
,
dsu
,
greedy
,
implementation
,
strings
1900
x3621
1969D
Shop Game
data structures
,
greedy
,
math
,
sortings
1900
x3623
1157D
N Problems During K Days
constructive algorithms
,
greedy
,
math
1900
x3630
1260D
A Game with Traps
binary search
,
dp
,
greedy
,
sortings
1900
x3646
1611E2
Escape The Maze (hard version)
dfs and similar
,
dp
,
greedy
,
shortest paths
,
trees
1900
x3670
535C
Tavas and Karafs
binary search
,
greedy
,
math
1900
x3707
1914F
Programming Competition
dfs and similar
,
dp
,
graph matchings
,
greedy
,
trees
1900
x3739
1141F1
Same Sum Blocks (Easy)
greedy
1900
x3750
535D
Tavas and Malekas
greedy
,
hashing
,
string suffix structures
,
strings
1900
x3794
1928D
Lonely Mountain Dungeons
brute force
,
data structures
,
greedy
,
math
,
ternary search
1900
x3814
1384B1
Koa and the Beach (Easy Version)
brute force
,
dp
,
greedy
1900
x3853
1927F
Microcycle
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
1900
x3875
1659D
Reverse Sort Sum
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
,
two pointers
1900
x3896
1842D
Tenzing and His Animal Friends
constructive algorithms
,
graphs
,
greedy
1900
x3937
558C
Amr and Chemistry
brute force
,
graphs
,
greedy
,
math
,
shortest paths
1900
x3939
557C
Arthur and Table
brute force
,
data structures
,
dp
,
greedy
,
math
,
sortings
1900
x3943
1650E
Rescheduling the Exam
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1900
x4031
1909D
Split Plus K
greedy
,
math
,
number theory
1900
x4046
1421D
Hexagons
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
,
shortest paths
1900
x4056
1141F2
Same Sum Blocks (Hard)
data structures
,
greedy
1900
x4071
1453D
Checkpoints
brute force
,
constructive algorithms
,
greedy
,
math
,
probabilities
1900
x4092
1846G
Rudolf and CodeVid-23
bitmasks
,
dp
,
graphs
,
greedy
,
shortest paths
1900
x4100
1946D
Birthday Gift
bitmasks
,
brute force
,
constructive algorithms
,
greedy
,
implementation
1900
x4158
999D
Equalize the Remainders
data structures
,
greedy
,
implementation
1900
x4175
1237C2
Balanced Removals (Harder)
binary search
,
constructive algorithms
,
divide and conquer
,
greedy
,
implementation
,
sortings
1900
x4236
3B
Lorry
greedy
,
sortings
1900
x4245
1463D
Pairs
binary search
,
constructive algorithms
,
greedy
,
two pointers
1900
x4258
1178E
Archaeology
brute force
,
constructive algorithms
,
greedy
,
strings
1900
x4262
1759G
Restore the Permutation
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
1900
x4267
1717D
Madoka and The Corruption Scheme
combinatorics
,
constructive algorithms
,
greedy
,
math
1900
x4270
476D
Dreamoon and Sets
constructive algorithms
,
greedy
,
math
1900
x4330
1834D
Survey in Class
brute force
,
data structures
,
greedy
,
implementation
,
sortings
1900
x4383
1428D
Bouncing Boomerangs
constructive algorithms
,
greedy
,
implementation
1900
x4420
1746D
Paths on the Tree
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1900
x4442
1791G2
Teleporters (Hard Version)
binary search
,
greedy
,
sortings
1900
x4519
1661D
Progressions Covering
data structures
,
greedy
1900
x4546
1294E
Obtain a Permutation
greedy
,
implementation
,
math
1900
x4702
1383B
GameGame
bitmasks
,
constructive algorithms
,
dp
,
games
,
greedy
,
math
1900
x4779
1821D
Black Cells
binary search
,
brute force
,
greedy
,
math
1900
x4788
1208D
Restore Permutation
binary search
,
data structures
,
greedy
,
implementation
1900
x4797
1898D
Absolute Beauty
greedy
,
math
1900
x4809
1153D
Serval and Rooted Tree
binary search
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x4850
1119E
Pavel and Triangles
brute force
,
dp
,
fft
,
greedy
,
ternary search
1900
x4901
1739D
Reset K Edges
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x4905
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x4925
803C
Maximal GCD
constructive algorithms
,
greedy
,
math
1900
x4936
1715D
2+ doors
2-sat
,
bitmasks
,
graphs
,
greedy
1900
x4959
1439A2
Binary Table (Hard Version)
constructive algorithms
,
graphs
,
greedy
,
implementation
1900
x4960
1718A2
Burenka and Traditions (hard version)
data structures
,
dp
,
greedy
1900
x5033
1882D
Tree XOR
bitmasks
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x5037
1367E
Necklace Assembly
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
number theory
1900
x5140
1696D
Permutation Graph
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
shortest paths
1900
x5213
1494C
1D Sokoban
binary search
,
dp
,
greedy
,
implementation
,
two pointers
1900
x5244
1197D
Yet Another Subarray Problem
dp
,
greedy
,
math
1900
x5256
552C
Vanya and Scales
brute force
,
dp
,
greedy
,
math
,
meet-in-the-middle
,
number theory
1900
x5397
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5515
1264B
Beautiful Sequence
brute force
,
constructive algorithms
,
greedy
1900
x5589
1624G
MinOr Tree
bitmasks
,
dfs and similar
,
dsu
,
graphs
,
greedy
1900
x5596
1251D
Salary Changing
binary search
,
greedy
,
sortings
1900
x5749
1175D
Array Splitting
greedy
,
sortings
1900
x5796
1495B
Let's Go Hiking
games
,
greedy
1900
x5854
1700D
River Locks
binary search
,
dp
,
greedy
,
math
1900
x5864
1436D
Bandit in a City
binary search
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x5873
1095F
Make It Connected
dsu
,
graphs
,
greedy
1900
x5890
1342D
Multiple Testcases
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
,
two pointers
1900
x5893
1560F1
Nearest Beautiful Number (easy version)
binary search
,
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
1900
x5941
1492D
Genius's Gambit
bitmasks
,
constructive algorithms
,
greedy
,
math
1900
x5951
1512F
Education
brute force
,
dp
,
greedy
,
implementation
1900
x5974
1508A
Binary Literature
constructive algorithms
,
greedy
,
implementation
,
strings
,
two pointers
1900
x6034
1307D
Cow and Fields
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
sortings
1900
x6044
1313C2
Skyscrapers (hard version)
data structures
,
dp
,
greedy
1900
x6184
1467C
Three Bags
constructive algorithms
,
greedy
1900
x6228
1430E
String Reversal
data structures
,
greedy
,
strings
1900
x6241
1155D
Beautiful Array
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
1900
x6723
1479B1
Painting the Array I
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
1900
x6770
1353E
K-periodic Garland
brute force
,
dp
,
greedy
1900
x6787
1303D
Fill The Bag
bitmasks
,
greedy
1900
x6843
1245D
Shichikuji and Power Grid
dsu
,
graphs
,
greedy
,
shortest paths
,
trees
1900
x7035
←
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10
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12
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26
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Before contest
Educational Codeforces Round 166 (Rated for Div. 2)
01:12:21
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20:42:21
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greedy
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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