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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
702E
Analysis of Pathes in Functional Graph
data structures
,
graphs
2100
x2271
985D
Sand Fortress
binary search
,
constructive algorithms
,
math
2100
x2254
1821E
Rearrange Brackets
brute force
,
dp
,
greedy
,
sortings
,
strings
2100
x2247
840B
Leha and another game about graph
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
graphs
2100
x2245
1598E
Staircases
brute force
,
combinatorics
,
data structures
,
dfs and similar
,
dp
,
implementation
,
math
2100
x2240
988F
Rain and Umbrellas
dp
2100
x2201
1933F
Turtle Mission: Robot and the Earthquake
dfs and similar
,
dp
,
graphs
,
shortest paths
2100
x2200
767D
Cartons of milk
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
2100
x2194
976E
Well played!
greedy
,
sortings
2100
x2188
1787E
The Harmonization of XOR
bitmasks
,
constructive algorithms
,
greedy
,
math
2100
x2180
1839D
Ball Sorting
data structures
,
dp
,
sortings
2100
x2178
414C
Mashmokh and Reverse Operation
combinatorics
,
divide and conquer
2100
x2173
1808D
Petya, Petya, Petr, and Palindromes
binary search
,
brute force
,
data structures
,
two pointers
2100
x2168
166B
Polygons
geometry
,
sortings
2100
x2159
894E
Ralph and Mushrooms
dp
,
graphs
2100
x2144
1876C
Autosynthesis
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
sortings
2100
x2141
754D
Fedor and coupons
binary search
,
data structures
,
greedy
,
sortings
2100
x2135
1108E2
Array and Segments (Hard version)
data structures
,
implementation
2100
x2121
301B
Yaroslav and Time
binary search
,
graphs
,
shortest paths
2100
x2112
767B
The Queue
brute force
,
greedy
2100
x2109
431D
Random Task
binary search
,
bitmasks
,
combinatorics
,
dp
,
math
2100
x2105
229D
Towers
dp
,
greedy
,
two pointers
2100
x2103
776E
The Holmes Children
math
,
number theory
2100
x2101
1266E
Spaceship Solitaire
data structures
,
greedy
,
implementation
2100
x2069
1729G
Cut Substrings
combinatorics
,
dp
,
hashing
,
strings
,
two pointers
2100
x2061
466E
Information Graph
dfs and similar
,
dsu
,
graphs
,
trees
2100
x2059
348B
Apple Tree
dfs and similar
,
number theory
,
trees
2100
x2046
1801D
The way home
binary search
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
,
sortings
2100
x2045
340B
Maximal Area Quadrilateral
brute force
,
geometry
2100
x2025
1896E
Permutation Sorting
data structures
,
sortings
2100
x2018
571A
Lengthening Sticks
combinatorics
,
implementation
,
math
2100
x2009
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2009
601B
Lipshitz Sequence
data structures
,
math
2100
x2002
631D
Messenger
data structures
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x1990
103D
Time to Raid Cowavans
brute force
,
data structures
,
sortings
2100
x1985
1056E
Check Transcription
brute force
,
data structures
,
hashing
,
strings
2100
x1981
850B
Arpa and a list of numbers
implementation
,
number theory
2100
x1976
990E
Post Lamps
brute force
,
greedy
2100
x1974
799D
Field expansion
brute force
,
dp
,
meet-in-the-middle
2100
x1969
1525E
Assimilation IV
combinatorics
,
dp
,
math
,
probabilities
,
two pointers
2100
x1968
912D
Fishes
data structures
,
graphs
,
greedy
,
probabilities
,
shortest paths
2100
x1956
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x1955
1776G
Another Wine Tasting Event
combinatorics
,
constructive algorithms
,
math
,
strings
2100
x1954
875C
National Property
2-sat
,
dfs and similar
,
graphs
,
implementation
2100
x1921
1811G1
Vlad and the Nice Paths (easy version)
combinatorics
,
dp
,
math
2100
x1915
1413E
Solo mid Oracle
greedy
,
math
,
ternary search
2100
x1912
145C
Lucky Subsequence
combinatorics
,
dp
,
math
2100
x1884
1120C
Compress String
dp
,
strings
2100
x1871
1027E
Inverse Coloring
combinatorics
,
dp
,
math
2100
x1862
333D
Characteristics of Rectangles
binary search
,
bitmasks
,
brute force
,
implementation
,
sortings
2100
x1849
1900E
Transitive Graph
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
2100
x1829
919E
Congruence Equation
chinese remainder theorem
,
math
,
number theory
2100
x1825
748D
Santa Claus and a Palindrome
constructive algorithms
,
data structures
,
greedy
2100
x1812
242D
Dispute
dfs and similar
,
graphs
,
greedy
2100
x1808
1185F
Two Pizzas
bitmasks
,
brute force
2100
x1802
1510D
Digits
dp
,
math
,
number theory
2100
x1801
1252K
Addition Robot
data structures
,
math
,
matrices
2100
x1787
549H
Degenerate Matrix
binary search
,
math
2100
x1785
1183F
Topforces Strikes Back
brute force
,
math
,
sortings
2100
x1766
1066F
Yet another 2D Walking
dp
2100
x1763
797D
Broken BST
data structures
,
dfs and similar
2100
x1752
1176F
Destroy it!
dp
,
implementation
,
sortings
2100
x1742
1267K
Key Storage
combinatorics
,
math
2100
x1738
1811F
Is It Flower?
dfs and similar
,
graphs
,
implementation
2100
x1729
551D
GukiZ and Binary Operations
combinatorics
,
implementation
,
math
,
matrices
,
number theory
2100
x1723
1028D
Order book
combinatorics
,
data structures
,
greedy
2100
x1710
590B
Chip 'n Dale Rescue Rangers
binary search
,
geometry
,
math
2100
x1705
1158C
Permutation recovery
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
math
,
sortings
2100
x1697
960D
Full Binary Tree Queries
brute force
,
implementation
,
trees
2100
x1680
909D
Colorful Points
data structures
,
greedy
,
implementation
2100
x1679
1914G1
Light Bulbs (Easy Version)
brute force
,
combinatorics
,
dfs and similar
,
dp
,
dsu
,
graphs
,
math
,
trees
2100
x1675
295C
Greg and Friends
combinatorics
,
dp
,
graphs
,
shortest paths
2100
x1654
464C
Substitutes in Number
dp
2100
x1651
859E
Desk Disorder
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x1647
496E
Distributing Parts
greedy
,
sortings
2100
x1629
269C
Flawed Flow
constructive algorithms
,
flows
,
graphs
,
greedy
2100
x1620
827C
DNA Evolution
data structures
,
strings
2100
x1615
1005F
Berland and the Shortest Paths
brute force
,
dfs and similar
,
graphs
,
shortest paths
2100
x1611
489F
Special Matrices
combinatorics
,
dp
2100
x1597
992D
Nastya and a Game
brute force
,
implementation
,
math
2100
x1595
703C
Chris and Road
geometry
,
implementation
2100
x1585
165D
Beard Graph
data structures
,
dsu
,
trees
2100
x1584
793D
Presents in Bankopolis
dp
,
graphs
,
shortest paths
2100
x1576
732E
Sockets
greedy
,
sortings
2100
x1576
899F
Letters Removing
data structures
,
strings
2100
x1574
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1572
276E
Little Girl and Problem on Trees
data structures
,
graphs
,
trees
2100
x1546
231E
Cactus
data structures
,
dfs and similar
,
dp
,
graphs
,
trees
2100
x1539
520D
Cubes
games
,
greedy
,
implementation
2100
x1533
1866H
Happy Sets
combinatorics
2100
x1528
56D
Changing a String
dp
2100
x1528
811D
Vladik and Favorite Game
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2100
x1526
5D
Follow Traffic Rules
implementation
,
math
2100
x1519
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1513
837E
Vasya's Function
binary search
,
implementation
,
math
2100
x1509
995A
Tesla
constructive algorithms
,
implementation
2100
x1502
993C
Careful Maneuvering
bitmasks
,
brute force
,
geometry
2100
x1480
439E
Devu and Birthday Celebration
combinatorics
,
dp
,
math
2100
x1477
1032E
The Unbearable Lightness of Weights
dp
,
math
2100
x1475
1098B
Nice table
brute force
,
constructive algorithms
,
greedy
,
math
2100
x1465
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