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WorldQuant Round 1 (Codeforces Round 1128, Div. 1 + Div. 2)
2 days
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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
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Status
Standings
Custom test
Problems
#
Name
49B
Sum
math
1500
x2875
49A
Sleuth
implementation
800
x15683
48H
Black and White
constructive algorithms
2800
x205
48G
Galaxy Union
dp
,
trees
,
two pointers
2700
x372
48F
Snow sellers
greedy
,
sortings
2800
x207
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x743
48D
Permutations
greedy
1500
x3074
48C
The Race
math
1800
x874
48B
Land Lot
brute force
,
implementation
1200
x3127
48A
Rock-paper-scissors
implementation
,
schedules
900
x7510
47E
Cannon
data structures
,
geometry
,
sortings
2200
x484
47D
Safe
brute force
2200
x1037
47C
Crossword
implementation
2000
x898
47B
Coins
implementation
1200
x16555
47A
Triangular numbers
brute force
,
math
800
x18819
46G
Emperor's Problem
geometry
2500
x173
46F
Hercule Poirot Problem
dsu
,
graphs
2300
x397
46E
Comb
data structures
,
dp
1900
x1177
46D
Parking Lot
data structures
,
implementation
1800
x1118
46C
Hamsters and Tigers
two pointers
1600
x2947
46B
T-shirts from Sponsor
implementation
1100
x4238
46A
Ball Game
brute force
,
implementation
800
x10302
45J
Planting Trees
constructive algorithms
1800
x1096
45I
TCMCF+++
greedy
1400
x2880
45H
Road Problem
graphs
2100
x252
45G
Prime Problem
number theory
2200
x1305
45F
Goats and Wolves
greedy
2500
x203
45E
Director
constructive algorithms
,
greedy
2000
x669
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x2030
45C
Dancing Lessons
data structures
1900
x1173
45B
School
dp
,
dsu
2200
x348
45A
Codecraft III
implementation
900
x8447
44J
Triminoes
constructive algorithms
,
greedy
2000
x635
44I
Toys
brute force
,
combinatorics
2300
x257
44H
Phone Number
dp
1700
x2043
44G
Shooting Gallery
data structures
,
implementation
2500
x569
44F
BerPaint
geometry
,
graphs
2700
x86
44E
Anfisa the Monkey
dp
1400
x6308
44D
Hyperdrive
math
1800
x817
44C
Holidays
implementation
1300
x4205
44B
Cola
implementation
1500
x2411
44A
Indian Summer
implementation
900
x19305
43E
Race
brute force
,
implementation
,
two pointers
2300
x487
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1267
43C
Lucky Tickets
greedy
1300
x4883
43B
Letter
implementation
,
strings
1100
x21320
43A
Football
strings
1000
x73328
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x294
42D
Strange town
constructive algorithms
,
math
2300
x527
42C
Safe cracking
brute force
,
constructive algorithms
2200
x626
42B
Game of chess unfinished
implementation
1700
x1213
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x3249
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x2296
41D
Pawn
dp
1900
x3011
41C
Email address
expression parsing
,
implementation
1300
x4335
41B
Martian Dollar
brute force
1400
x4746
41A
Translation
implementation
,
strings
800
x200554
40E
Number Table
combinatorics
2500
x1077
40D
Interesting Sequence
math
2600
x203
40C
Berland Square
implementation
,
math
2300
x371
40B
Repaintings
math
1600
x1461
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x4568
39K
Testing
2600
x153
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x3717
39I
Tram
2500
x253
39H
Multiplication Table
implementation
1300
x3209
39G
Inverse Function
implementation
2400
x182
39F
Pacifist frogs
implementation
1300
x2023
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x1115
39D
Cubical Planet
math
1100
x4824
39C
Moon Craters
dp
,
sortings
2100
x728
39B
Company Income Growth
greedy
1300
x3190
39A
C*++ Calculations
expression parsing
,
greedy
2000
x835
38H
The Great Marathon
dp
2400
x496
38G
Queue
data structures
2300
x969
38F
Smart Boy
dp
,
games
,
strings
2100
x465
38E
Let's Go Rolling!
dp
,
sortings
1800
x3060
38D
Vasya the Architect
implementation
1900
x1099
38C
Blinds
brute force
1400
x2634
38B
Chess
brute force
,
implementation
,
math
1200
x4180
38A
Army
implementation
800
x27758
37E
Trial for Chief
graphs
,
greedy
,
shortest paths
2600
x727
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x600
37C
Old Berland Language
data structures
,
greedy
,
trees
1900
x2383
37B
Computer Game
greedy
,
implementation
1800
x1123
37A
Towers
sortings
1000
x28444
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x656
36D
New Game with a Chess Piece
games
2300
x789
36C
Bowls
geometry
,
implementation
2200
x397
36B
Fractal
implementation
1600
x2098
36A
Extra-terrestrial Intelligence
implementation
1300
x3645
35E
Parade
data structures
,
sortings
2100
x904
35D
Animals
dp
,
greedy
1700
x3976
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x9210
35B
Warehouse
implementation
1700
x1230
35A
Shell Game
implementation
1000
x7763
34E
Collisions
brute force
,
implementation
,
math
2000
x695
34D
Road Map
dfs and similar
,
graphs
1600
x6836
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4939
34B
Sale
greedy
,
sortings
900
x69806
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