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Codeforces Round 946 (Div. 3)
3 days
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Difficulty:
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*combine tags by OR
greedy
implementation
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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Custom test
Problems
#
Name
1769C1
Подкрутка I
*special problem
,
brute force
,
dp
,
greedy
1200
x932
176A
Trading Business
greedy
,
sortings
1200
x1407
180F
Mathematical Analysis Rocks!
constructive algorithms
,
implementation
,
math
1200
x2457
413A
Data Recovery
implementation
1200
x2540
523A
Rotate, Flip and Zoom
*special problem
,
implementation
1200
x2575
48B
Land Lot
brute force
,
implementation
1200
x2609
172B
Pseudorandom Sequence Period
*special problem
,
implementation
,
number theory
1200
x2691
802M
April Fools' Problem (easy)
greedy
,
sortings
1200
x3023
69B
Bets
greedy
,
implementation
1200
x3193
769B
News About Credit
*special problem
,
greedy
,
two pointers
1200
x3237
645B
Mischievous Mess Makers
greedy
,
math
1200
x3332
55A
Flea travel
implementation
,
math
1200
x3342
645A
Amity Assessment
brute force
,
constructive algorithms
,
implementation
1200
x3361
38B
Chess
brute force
,
implementation
,
math
1200
x3398
15A
Cottage Village
implementation
,
sortings
1200
x3614
101A
Homework
greedy
1200
x3710
1578E
Easy Scheduling
implementation
,
math
1200
x3733
88A
Chord
brute force
,
implementation
1200
x3740
134A
Average Numbers
brute force
,
implementation
1200
x3808
412C
Pattern
implementation
,
strings
1200
x3854
33A
What is for dinner?
greedy
,
implementation
1200
x3862
717C
Potions Homework
implementation
,
sortings
1200
x3870
79A
Bus Game
greedy
1200
x3979
774C
Maximum Number
*special problem
,
constructive algorithms
,
greedy
,
implementation
1200
x4028
112B
Petya and Square
implementation
,
math
1200
x4069
203A
Two Problems
brute force
,
implementation
1200
x4113
1075B
Taxi drivers and Lyft
implementation
,
sortings
1200
x4191
234A
Lefthanders and Righthanders
implementation
1200
x4381
401B
Sereja and Contests
greedy
,
implementation
,
math
1200
x4384
63B
Settlers' Training
implementation
1200
x4714
255B
Code Parsing
implementation
1200
x4873
143B
Help Kingdom of Far Far Away 2
implementation
,
strings
1200
x4919
216A
Tiling with Hexagons
implementation
,
math
1200
x4920
23A
You're Given a String...
brute force
,
greedy
1200
x5085
725B
Food on the Plane
implementation
,
math
1200
x5091
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5206
1510K
King's Task
brute force
,
graphs
,
implementation
1200
x5280
186B
Growing Mushrooms
greedy
,
sortings
1200
x5327
5B
Center Alignment
implementation
,
strings
1200
x5542
593A
2Char
brute force
,
implementation
1200
x5677
899B
Months and Years
implementation
1200
x5754
639A
Bear and Displayed Friends
implementation
1200
x6037
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6072
812A
Sagheer and Crossroads
implementation
1200
x6172
1043B
Lost Array
implementation
1200
x6208
151B
Phone Numbers
implementation
,
strings
1200
x6231
592A
PawnChess
implementation
1200
x6304
722B
Verse Pattern
implementation
,
strings
1200
x6352
811B
Vladik and Complicated Book
implementation
,
sortings
1200
x6441
895A
Pizza Separation
brute force
,
implementation
1200
x6458
59B
Fortune Telling
implementation
,
number theory
1200
x6693
366B
Dima and To-do List
brute force
,
implementation
1200
x6729
612B
HDD is Outdated Technology
implementation
,
math
1200
x6830
315B
Sereja and Array
implementation
1200
x6849
131B
Opposites Attract
implementation
,
math
1200
x6865
569B
Inventory
greedy
,
math
1200
x6954
145A
Lucky Conversion
greedy
,
implementation
1200
x6960
931B
World Cup
constructive algorithms
,
implementation
1200
x7031
920B
Tea Queue
implementation
1200
x7105
379B
New Year Present
constructive algorithms
,
implementation
1200
x7185
631B
Print Check
constructive algorithms
,
implementation
1200
x7251
985B
Switches and Lamps
implementation
1200
x7304
400B
Inna and New Matrix of Candies
brute force
,
implementation
,
schedules
1200
x7349
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x7350
1013B
And
greedy
1200
x7484
208D
Prizes, Prizes, more Prizes
implementation
1200
x7496
908B
New Year and Buggy Bot
brute force
,
implementation
1200
x7581
903B
The Modcrab
greedy
,
implementation
1200
x7584
1084B
Kvass and the Fair Nut
greedy
,
implementation
1200
x7696
1130B
Two Cakes
greedy
1200
x7702
292B
Network Topology
graphs
,
implementation
1200
x7720
729B
Spotlights
dp
,
implementation
1200
x7743
606A
Magic Spheres
implementation
1200
x7745
302B
Eugeny and Play List
binary search
,
implementation
,
two pointers
1200
x7796
828A
Restaurant Tables
implementation
1200
x7813
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x7838
990B
Micro-World
greedy
,
sortings
1200
x7988
960A
Check the string
implementation
1200
x8047
1027B
Numbers on the Chessboard
implementation
,
math
1200
x8080
591B
Rebranding
implementation
,
strings
1200
x8138
940A
Points on the line
brute force
,
greedy
,
sortings
1200
x8168
1051A
Vasya And Password
greedy
,
implementation
,
strings
1200
x8319
1082A
Vasya and Book
implementation
,
math
1200
x8433
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x8507
1023A
Single Wildcard Pattern Matching
brute force
,
implementation
,
strings
1200
x8523
934B
A Prosperous Lot
constructive algorithms
,
implementation
1200
x8527
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x8541
754A
Lesha and array splitting
constructive algorithms
,
greedy
,
implementation
1200
x8544
1000A
Codehorses T-shirts
greedy
,
implementation
1200
x8590
583B
Robot's Task
greedy
,
implementation
1200
x8627
1121B
Mike and Children
brute force
,
implementation
1200
x8641
133B
Unary
implementation
1200
x8642
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8676
408B
Garland
implementation
1200
x8884
708A
Letters Cyclic Shift
constructive algorithms
,
greedy
,
implementation
,
strings
1200
x8904
1153B
Serval and Toy Bricks
constructive algorithms
,
greedy
1200
x8959
574A
Bear and Elections
greedy
,
implementation
1200
x8967
1017B
The Bits
implementation
,
math
1200
x9052
463A
Caisa and Sugar
brute force
,
implementation
1200
x9107
959B
Mahmoud and Ehab and the message
dsu
,
greedy
,
implementation
1200
x9125
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