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Before contest
Codeforces Round 943 (Div. 3)
24:44:41
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Difficulty:
—
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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Problems
#
Name
1175C
Electrification
binary search
,
brute force
,
greedy
1600
x6597
1027C
Minimum Value Rectangle
greedy
1600
x6596
219C
Color Stripe
brute force
,
dp
,
greedy
1600
x6540
986A
Fair
graphs
,
greedy
,
number theory
,
shortest paths
1600
x6514
750C
New Year and Rating
binary search
,
greedy
,
math
1600
x6487
350C
Bombs
greedy
,
implementation
,
sortings
1600
x6432
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6276
1227D1
Optimal Subsequences (Easy Version)
data structures
,
greedy
1600
x6120
1017C
The Phone Number
constructive algorithms
,
greedy
1600
x5894
1137B
Camp Schedule
greedy
,
hashing
,
strings
1600
x5828
538C
Tourist's Notes
binary search
,
brute force
,
greedy
,
implementation
,
math
1600
x5759
500C
New Year Book Reading
constructive algorithms
,
greedy
,
implementation
,
math
1600
x5740
525C
Ilya and Sticks
greedy
,
math
,
sortings
1600
x5698
1904D1
Set To Max (Easy Version)
brute force
,
constructive algorithms
,
greedy
1600
x5627
1056D
Decorate Apple Tree
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
sortings
,
trees
1600
x5616
689B
Mike and Shortcuts
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x5598
712C
Memory and De-Evolution
greedy
,
math
1600
x5533
1082C
Multi-Subject Competition
greedy
,
sortings
1600
x5501
1062C
Banh-mi
greedy
,
implementation
,
math
1600
x5309
734C
Anton and Making Potions
binary search
,
dp
,
greedy
,
two pointers
1600
x5284
383A
Milking cows
data structures
,
greedy
1600
x5197
949A
Zebras
greedy
1600
x5177
1031C
Cram Time
greedy
1600
x5160
924B
Three-level Laser
binary search
,
greedy
,
two pointers
1600
x5060
845B
Luba And The Ticket
brute force
,
greedy
,
implementation
1600
x4931
214B
Hometask
brute force
,
constructive algorithms
,
greedy
,
math
1600
x4881
337C
Quiz
binary search
,
greedy
,
math
,
matrices
,
number theory
1600
x4768
597B
Restaurant
dp
,
greedy
,
sortings
1600
x4631
822C
Hacker, pack your bags!
binary search
,
greedy
,
implementation
,
sortings
1600
x4526
723C
Polycarp at the Radio
greedy
1600
x4506
898E
Squares and not squares
constructive algorithms
,
greedy
1600
x4488
508C
Anya and Ghosts
constructive algorithms
,
greedy
1600
x4410
825C
Multi-judge Solving
greedy
,
implementation
1600
x4349
626C
Block Towers
brute force
,
greedy
,
math
,
number theory
1600
x4286
154A
Hometask
greedy
1600
x3983
333A
Secrets
greedy
1600
x3925
898D
Alarm Clock
greedy
1600
x3612
269A
Magical Boxes
greedy
,
math
1600
x3473
297B
Fish Weight
constructive algorithms
,
greedy
1600
x3439
444A
DZY Loves Physics
greedy
,
math
1600
x3365
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3213
225B
Well-known Numbers
binary search
,
greedy
,
number theory
1600
x3098
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2600
253C
Text Editor
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x2520
232A
Cycles
binary search
,
constructive algorithms
,
graphs
,
greedy
1600
x2446
305C
Ivan and Powers of Two
greedy
,
implementation
1600
x2414
847H
Load Testing
greedy
1600
x2370
637D
Running with Obstacles
*special problem
,
data structures
,
dp
,
greedy
1600
x1949
440B
Balancer
greedy
,
implementation
1600
x1915
250C
Movie Critics
greedy
1600
x1875
70B
Text Messaging
expression parsing
,
greedy
,
strings
1600
x1716
910B
Door Frames
greedy
,
implementation
1600
x1675
958E1
Guard Duty (easy)
brute force
,
geometry
,
greedy
,
math
1600
x1469
291D
Parallel Programming
*special problem
,
greedy
1600
x1467
73A
The Elder Trolls IV: Oblivon
greedy
,
math
1600
x1296
175C
Geometry Horse
greedy
,
implementation
,
sortings
,
two pointers
1600
x1288
125C
Hobbits' Party
constructive algorithms
,
greedy
1600
x899
1910B
Security Guard
*special problem
,
greedy
1600
x579
1346C
Spring Cleaning
*special problem
,
greedy
,
sortings
1600
x579
1346D
Constructing the Dungeon
*special problem
,
graphs
,
greedy
1600
x476
649D
Дефрагментация памяти
constructive algorithms
,
greedy
,
implementation
1600
x342
64C
Table
*special problem
,
greedy
,
implementation
,
math
1600
x331
207A1
Beaver's Calculator 1.0
greedy
1600
x272
1365D
Solve The Maze
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
shortest paths
1700
x16111
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x13479
276D
Little Girl and Maximum XOR
bitmasks
,
dp
,
greedy
,
implementation
,
math
1700
x12927
1554B
Cobb
bitmasks
,
brute force
,
greedy
,
math
1700
x12395
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12185
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12179
1325D
Ehab the Xorcist
bitmasks
,
constructive algorithms
,
greedy
,
number theory
1700
x11540
486C
Palindrome Transformation
brute force
,
greedy
,
implementation
1700
x11489
1368D
AND, OR and square sum
bitmasks
,
greedy
,
math
1700
x11201
1628B
Peculiar Movie Preferences
greedy
,
strings
1700
x11175
778A
String Game
binary search
,
greedy
,
strings
1700
x11082
1336B
Xenia and Colorful Gems
binary search
,
greedy
,
math
,
sortings
,
two pointers
1700
x10969
1400B
RPG Protagonist
brute force
,
greedy
,
math
1700
x10827
1626C
Monsters And Spells
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1700
x10597
1700C
Helping the Nature
constructive algorithms
,
data structures
,
greedy
1700
x10448
1695C
Zero Path
brute force
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x10352
1393C
Pinkie Pie Eats Patty-cakes
constructive algorithms
,
greedy
,
math
,
sortings
1700
x10253
1383A
String Transformation 1
dsu
,
graphs
,
greedy
,
sortings
,
strings
,
trees
,
two pointers
1700
x10228
1550C
Manhattan Subarrays
brute force
,
geometry
,
greedy
,
implementation
1700
x9927
1684D
Traps
constructive algorithms
,
greedy
,
sortings
1700
x9287
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x9054
1661C
Water the Trees
binary search
,
greedy
,
math
1700
x8949
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x8827
1783C
Yet Another Tournament
binary search
,
greedy
,
sortings
1700
x8785
1430D
String Deletion
binary search
,
data structures
,
greedy
,
two pointers
1700
x8659
1619E
MEX and Increments
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
sortings
1700
x8647
1826D
Running Miles
brute force
,
dp
,
greedy
1700
x8505
1392D
Omkar and Bed Wars
dp
,
greedy
1700
x8434
1268A
Long Beautiful Integer
constructive algorithms
,
greedy
,
implementation
,
strings
1700
x8288
1361A
Johnny and Contribution
constructive algorithms
,
graphs
,
greedy
,
sortings
1700
x8147
1157E
Minimum Array
binary search
,
data structures
,
greedy
1700
x8140
339C
Xenia and Weights
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x8123
1709D
Rorororobot
binary search
,
data structures
,
greedy
,
math
1700
x8059
1693B
Fake Plastic Trees
dfs and similar
,
dp
,
greedy
,
trees
1700
x8046
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x8043
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8025
1702F
Equate Multisets
constructive algorithms
,
data structures
,
greedy
,
math
,
number theory
1700
x7922
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