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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
216D
Spider's Web
binary search
,
sortings
,
two pointers
1700
x1350
216C
Hiring Staff
greedy
1800
x1836
216B
Forming Teams
dfs and similar
,
implementation
1700
x6326
216A
Tiling with Hexagons
implementation
,
math
1200
x4991
215E
Periodical Numbers
combinatorics
,
dp
,
number theory
2100
x551
215D
Hot Days
greedy
1900
x1593
215C
Crosses
brute force
,
implementation
2100
x665
215B
Olympic Medal
greedy
,
math
1300
x5552
215A
Bicycle Chain
brute force
,
implementation
900
x14431
214B
Hometask
brute force
,
constructive algorithms
,
greedy
,
math
1600
x4955
214A
System of Equations
brute force
800
x35103
213E
Two Permutations
data structures
,
hashing
,
strings
2700
x792
213D
Stars
constructive algorithms
,
geometry
2300
x338
213C
Relay Race
dp
2000
x2836
213B
Numbers
combinatorics
,
dp
1900
x1745
213A
Game
dfs and similar
,
greedy
1700
x1719
212E
IT Restaurants
dfs and similar
,
dp
,
trees
1500
x1722
212D
Cutting a Fence
binary search
,
data structures
,
dsu
2500
x504
212C
Cowboys
combinatorics
,
dp
,
math
2100
x384
212B
Polycarpus is Looking for Good Substrings
bitmasks
,
hashing
,
implementation
2300
x332
212A
Privatization
flows
,
graphs
3000
x203
209C
Trails and Glades
constructive algorithms
,
dsu
,
graphs
,
greedy
2400
x730
209B
Pixels
constructive algorithms
,
math
2100
x372
209A
Multicolored Marbles
dp
,
math
1600
x2328
208E
Blood Cousins
binary search
,
data structures
,
dfs and similar
,
trees
2100
x6585
208D
Prizes, Prizes, more Prizes
implementation
1200
x7576
208C
Police Station
dp
,
graphs
,
shortest paths
1900
x1837
208B
Solitaire
dfs and similar
,
dp
1900
x1355
208A
Dubstep
strings
900
x87725
207D9
The Beaver's Problem - 3
1800
x85
207D8
The Beaver's Problem - 3
2300
x90
207D7
The Beaver's Problem - 3
1600
x98
207D6
The Beaver's Problem - 3
2100
x81
207D5
The Beaver's Problem - 3
1600
x139
207D4
The Beaver's Problem - 3
2100
x150
207D3
The Beaver's Problem - 3
2000
x136
207D2
The Beaver's Problem - 3
2000
x106
207D10
The Beaver's Problem - 3
2100
x82
207D1
The Beaver's Problem - 3
1800
x117
207C3
Game with Two Trees
data structures
2700
x132
207C2
Game with Two Trees
2200
x84
207C1
Game with Two Trees
2100
x107
207B3
Military Trainings
1700
x163
207B2
Military Trainings
1900
x181
207B1
Military Trainings
1600
x266
207A3
Beaver's Calculator 1.0
greedy
2000
x213
207A2
Beaver's Calculator 1.0
greedy
1800
x234
207A1
Beaver's Calculator 1.0
greedy
1600
x285
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x6023
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x22269
204E
Little Elephant and Strings
data structures
,
implementation
,
string suffix structures
,
two pointers
2800
x1154
204D
Little Elephant and Retro Strings
dp
2400
x581
204C
Little Elephant and Furik and Rubik
math
,
probabilities
2000
x1098
204B
Little Elephant and Cards
binary search
,
data structures
1500
x5180
204A
Little Elephant and Interval
binary search
,
combinatorics
,
dp
1500
x5681
203E
Transportation
greedy
,
sortings
,
two pointers
2300
x280
203D
Hit Ball
geometry
,
implementation
,
math
1700
x1414
203C
Photographer
greedy
,
sortings
1400
x5656
203B
Game on Paper
brute force
,
implementation
1300
x2576
203A
Two Problems
brute force
,
implementation
1200
x4152
202B
Brand New Easy Problem
brute force
1700
x814
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x16688
201E
Thoroughly Bureaucratic Organization
binary search
,
combinatorics
2600
x415
201D
Brand New Problem
bitmasks
,
brute force
,
dp
2600
x413
201C
Fragile Bridges
dp
2000
x1348
201B
Guess That Car!
math
,
ternary search
1800
x1264
201A
Clear Symmetry
constructive algorithms
,
dp
,
math
1700
x2995
200E
Tractor College
implementation
,
math
,
number theory
,
ternary search
2400
x344
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x909
200C
Football Championship
brute force
,
implementation
1800
x1052
200B
Drinks
implementation
,
math
800
x114820
200A
Cinema
brute force
,
data structures
2400
x679
199B
Special Olympics
geometry
1900
x799
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x26221
198E
Gripping Story
binary search
,
data structures
,
sortings
2400
x414
198D
Cube Snake
constructive algorithms
2700
x105
198C
Delivering Carcinogen
binary search
,
geometry
2400
x373
198B
Jumping on Walls
shortest paths
1400
x4248
198A
About Bacteria
implementation
,
math
1700
x3145
197B
Limit
math
1400
x4627
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6274
196E
Opening Portals
dsu
,
graphs
,
shortest paths
2600
x923
196D
The Next Good String
data structures
,
greedy
,
hashing
,
strings
2800
x531
196C
Paint Tree
constructive algorithms
,
divide and conquer
,
geometry
,
sortings
,
trees
2200
x957
196B
Infinite Maze
dfs and similar
,
graphs
2000
x2206
196A
Lexicographically Maximum Subsequence
greedy
,
strings
1100
x5389
195E
Building Forest
data structures
,
dsu
,
graphs
2000
x701
195D
Analyzing Polyline
geometry
,
math
,
sortings
1900
x1034
195C
Try and Catch
expression parsing
,
implementation
1800
x1135
195B
After Training
data structures
,
implementation
,
math
1300
x5186
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x8952
194B
Square
math
1200
x3505
194A
Exams
implementation
,
math
900
x9850
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x333
193D
Two Segments
data structures
2900
x428
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x512
193B
Xor
brute force
2000
x1009
193A
Cutting Figure
constructive algorithms
,
graphs
,
trees
1700
x3989
192B
Walking in the Rain
brute force
,
implementation
1100
x6242
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x10355
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