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binary search
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
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number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
#
Name
1334F
Strange Function
binary search
,
data structures
,
dp
,
greedy
2500
x1122
1307E
Cow and Treats
binary search
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
2500
x1119
1632E1
Distance Tree (easy version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
trees
2400
x1110
576E
Painting Edges
binary search
,
data structures
3300
x1105
802N
April Fools' Problem (medium)
binary search
,
flows
,
graphs
2400
x1097
1878G
wxhtzdy ORO Tree
binary search
,
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
implementation
,
trees
2300
x1096
808F
Card Game
binary search
,
flows
,
graphs
2400
x1090
713D
Animals and Puzzle
binary search
,
data structures
2700
x1076
333E
Summer Earnings
binary search
,
bitmasks
,
brute force
,
geometry
,
sortings
2500
x1069
1398F
Controversial Rounds
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2500
x1068
1285F
Classical?
binary search
,
combinatorics
,
number theory
2900
x1065
1379D
New Passenger Trams
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
2300
x1059
1578L
Labyrinth
binary search
,
dsu
,
greedy
2400
x1052
1795F
Blocking Chips
binary search
,
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2400
x1049
163B
Lemmings
binary search
2000
x1046
1136E
Nastya Hasn't Written a Legend
binary search
,
data structures
2200
x1043
300E
Empire Strikes Back
binary search
,
math
,
number theory
2300
x1026
1004E
Sonya and Ice Cream
binary search
,
data structures
,
dp
,
greedy
,
shortest paths
,
trees
2400
x1010
125E
MST Company
binary search
,
graphs
2400
x1006
730C
Bulmart
binary search
,
dfs and similar
2100
x1004
489E
Hiking
binary search
,
dp
2300
x998
1605E
Array Equalizer
binary search
,
greedy
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2400
x997
1107G
Vasya and Maximum Profit
binary search
,
constructive algorithms
,
data structures
,
dp
,
dsu
2400
x988
1656F
Parametric MST
binary search
,
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
2600
x987
553D
Nudist Beach
binary search
,
graphs
,
greedy
2300
x980
1091E
New Year and the Acquaintance Estimation
binary search
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
sortings
2400
x976
1221F
Choose a Square
binary search
,
data structures
,
sortings
2400
x975
1771F
Hossam and Range Minimum Query
binary search
,
bitmasks
,
data structures
,
hashing
,
probabilities
,
strings
,
trees
2500
x966
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x965
615E
Hexagons
binary search
,
implementation
,
math
2100
x964
852D
Exploration plan
binary search
,
flows
,
graph matchings
,
shortest paths
2100
x954
1344D
Résumé Review
binary search
,
greedy
,
math
2700
x951
1517E
Group Photo
binary search
,
data structures
,
implementation
,
two pointers
2500
x945
773C
Prairie Partition
binary search
,
constructive algorithms
,
greedy
,
math
2200
x937
1793E
Velepin and Marketing
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2600
x932
400E
Inna and Binary Logic
binary search
,
bitmasks
,
data structures
2100
x932
1016E
Rest In The Shades
binary search
,
geometry
2400
x929
1632E2
Distance Tree (hard version)
binary search
,
dfs and similar
,
shortest paths
,
trees
2700
x928
1539E
Game with Cards
binary search
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
2500
x925
1952G
Mathematician Takeover
binary search
,
dfs and similar
,
math
x919
85E
Guard Towers
binary search
,
dsu
,
geometry
,
graphs
,
sortings
2600
x918
372D
Choosing Subtree is Fun
binary search
,
data structures
,
dfs and similar
,
trees
,
two pointers
2600
x910
644C
Hostname Aliases
*special problem
,
binary search
,
data structures
,
implementation
,
sortings
,
strings
2100
x908
1099F
Cookies
binary search
,
data structures
,
dfs and similar
,
dp
,
games
,
trees
2400
x907
1835B
Lottery
binary search
,
brute force
,
greedy
,
math
,
two pointers
2500
x903
1394C
Boboniu and String
binary search
,
geometry
,
ternary search
2600
x901
431E
Chemistry Experiment
binary search
,
data structures
,
ternary search
2200
x901
1491F
Magnets
binary search
,
constructive algorithms
,
interactive
2700
x899
1129C
Morse Code
binary search
,
data structures
,
dp
,
hashing
,
sortings
,
string suffix structures
,
strings
2400
x896
958E2
Guard Duty (medium)
binary search
,
dp
,
greedy
,
sortings
2200
x896
1920F1
Smooth Sailing (Easy Version)
binary search
,
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
shortest paths
2500
x876
983E
NN country
binary search
,
data structures
,
trees
2800
x876
1051E
Vasya and Big Integers
binary search
,
data structures
,
dp
,
hashing
,
strings
2600
x875
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x875
504E
Misha and LCP on Tree
binary search
,
dfs and similar
,
hashing
,
string suffix structures
,
trees
3000
x871
1098C
Construct a tree
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
trees
2400
x865
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x859
24E
Berland collider
binary search
2300
x858
555D
Case of a Top Secret
binary search
,
implementation
,
math
2500
x857
1769B2
Копирование файлов II
*special problem
,
binary search
,
brute force
,
math
1400
x855
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x854
1804F
Approximate Diameter
binary search
,
divide and conquer
,
graphs
,
shortest paths
2700
x852
875E
Delivery Club
binary search
,
data structures
,
dp
2600
x852
387E
George and Cards
binary search
,
data structures
2200
x846
374D
Inna and Sequence
binary search
,
data structures
,
dp
,
trees
2000
x844
138C
Mushroom Gnomes - 2
binary search
,
data structures
,
probabilities
,
sortings
2200
x844
1969E
Unique Array
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
2400
x834
1279F
New Year and Handle Change
binary search
,
dp
2800
x833
1628E
Groceries in Meteor Town
binary search
,
data structures
,
dsu
,
trees
3100
x829
802O
April Fools' Problem (hard)
binary search
,
data structures
,
flows
2900
x826
1469F
Power Sockets
binary search
,
data structures
,
greedy
2600
x824
1814D
Balancing Weapons
binary search
,
brute force
,
data structures
,
math
,
two pointers
2500
x818
1805F1
Survival of the Weakest (easy version)
binary search
,
brute force
,
implementation
,
math
,
sortings
2600
x817
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x816
865C
Gotta Go Fast
binary search
,
dp
2400
x812
949D
Curfew
binary search
,
brute force
,
greedy
,
sortings
2300
x811
1614E
Divan and a Cottage
binary search
,
data structures
2600
x809
191E
Thwarting Demonstrations
binary search
,
data structures
,
trees
2200
x805
1468G
Hobbits
binary search
,
geometry
2500
x799
627D
Preorder Test
binary search
,
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2600
x795
248C
Robo-Footballer
binary search
,
geometry
2000
x793
1809E
Two Tanks
binary search
,
dp
,
implementation
,
math
2400
x791
150E
Freezing with Style
binary search
,
data structures
,
divide and conquer
,
trees
3000
x789
65C
Harry Potter and the Golden Snitch
binary search
,
geometry
2100
x772
1799F
Halve or Subtract
binary search
,
brute force
,
dp
,
greedy
,
sortings
2700
x767
727F
Polycarp's problems
binary search
,
dp
,
greedy
2300
x763
822E
Liar
binary search
,
dp
,
hashing
,
string suffix structures
2400
x762
444D
DZY Loves Strings
binary search
,
hashing
,
strings
,
two pointers
2500
x755
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x751
147B
Smile House
binary search
,
graphs
,
matrices
2500
x745
444E
DZY Loves Planting
binary search
,
dsu
,
trees
2700
x744
837F
Prefix Sums
binary search
,
brute force
,
combinatorics
,
math
,
matrices
2400
x738
1773B
BinCoin
binary search
,
divide and conquer
,
hashing
,
implementation
,
probabilities
,
trees
2200
x730
1354G
Find a Gift
binary search
,
interactive
,
probabilities
2600
x720
501E
Misha and Palindrome Degree
binary search
,
combinatorics
,
implementation
2500
x718
1055E
Segments on the Line
binary search
,
dp
2500
x707
1809F
Traveling in Berland
binary search
,
data structures
,
graphs
,
greedy
,
implementation
2500
x706
1666E
Even Split
binary search
,
constructive algorithms
,
greedy
,
math
2500
x679
981F
Round Marriage
binary search
,
graph matchings
,
greedy
2500
x674
414D
Mashmokh and Water Tanks
binary search
,
data structures
,
greedy
,
trees
,
two pointers
2300
x673
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