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Name
1819D
Misha and Apples
brute force
,
data structures
,
dp
,
two pointers
2800
x597
1819A
Constructive Problem
brute force
,
greedy
1300
x12100
1817E
Half-sum
brute force
,
divide and conquer
,
greedy
3400
x250
1817B
Fish Graph
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
1900
x3878
1815B
Sum Graph
brute force
,
constructive algorithms
,
graphs
,
implementation
,
interactive
,
shortest paths
,
trees
2000
x2867
1814F
Communication Towers
brute force
,
divide and conquer
,
dsu
2700
x467
1814D
Balancing Weapons
binary search
,
brute force
,
data structures
,
math
,
two pointers
2500
x822
1814B
Long Legs
brute force
,
math
1700
x9557
1812B
Was it Rated?
*special problem
,
*special problem
,
*special problem
,
brute force
,
implementation
x5582
1810E
Monsters
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
2100
x2979
1810C
Make It Permutation
brute force
,
greedy
,
sortings
1300
x13825
1810A
Beautiful Sequence
brute force
,
greedy
800
x20366
1808E3
Minibuses on Venus (hard version)
brute force
,
combinatorics
,
dp
,
math
2800
x419
1808D
Petya, Petya, Petr, and Palindromes
binary search
,
brute force
,
data structures
,
two pointers
2100
x2172
1808C
Unlucky Numbers
brute force
,
dp
,
greedy
,
implementation
1900
x3596
1808A
Lucky Numbers
brute force
,
implementation
900
x17364
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17896
1807F
Bouncy Ball
brute force
,
dfs and similar
,
implementation
1700
x5911
1806E
Tree Master
brute force
,
data structures
,
dfs and similar
,
trees
2200
x2694
1806C
Sequence Master
brute force
,
constructive algorithms
,
math
1600
x7222
1805F1
Survival of the Weakest (easy version)
binary search
,
brute force
,
implementation
,
math
,
sortings
2600
x824
1805E
There Should Be a Lot of Maximums
brute force
,
data structures
,
dfs and similar
,
dp
,
trees
,
two pointers
2300
x1529
1805A
We Need the Zero
bitmasks
,
brute force
800
x21195
1804E
Routing
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x1364
1804D
Accommodation
brute force
,
dp
,
greedy
,
implementation
2000
x4429
1804C
Pull Your Luck
brute force
,
greedy
,
math
,
number theory
1500
x11557
1800E2
Unforgivable Curse (hard version)
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
strings
1500
x12100
1800E1
Unforgivable Curse (easy version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
strings
1400
x12187
1799F
Halve or Subtract
binary search
,
brute force
,
dp
,
greedy
,
sortings
2700
x768
1799B
Equalize by Divide
brute force
,
constructive algorithms
,
greedy
,
math
1200
x10841
1798E
Multitest Generator
brute force
,
dp
2300
x1527
1798B
Three Sevens
brute force
,
data structures
,
greedy
,
implementation
1000
x15926
1797E
Li Hua and Array
brute force
,
data structures
,
dsu
,
math
,
number theory
,
two pointers
2300
x1199
1797D
Li Hua and Tree
brute force
,
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1900
x3709
1796F
Strange Triples
brute force
,
math
,
number theory
2900
x169
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18580
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x21204
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23262
1793F
Rebrending
brute force
,
data structures
,
divide and conquer
,
implementation
2600
x1292
1792F2
Graph Coloring (hard version)
brute force
,
combinatorics
,
divide and conquer
,
dp
,
fft
,
graphs
2900
x373
1792E
Divisors and Table
brute force
,
dfs and similar
,
dp
,
number theory
2400
x1310
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x13304
1791F
Range Update Point Query
binary search
,
brute force
,
data structures
1500
x11561
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x27092
1790F
Timofey and Black-White Tree
brute force
,
dfs and similar
,
divide and conquer
,
graphs
,
greedy
,
math
,
shortest paths
,
trees
2100
x3156
1790C
Premutation
brute force
,
implementation
,
math
1000
x22993
1789F
Serval and Brain Power
bitmasks
,
brute force
,
dp
,
greedy
,
implementation
,
strings
2700
x521
1789E
Serval and Music Game
brute force
,
dp
,
implementation
,
math
,
number theory
2500
x766
1789D
Serval and Shift-Shift-Shift
bitmasks
,
brute force
,
constructive algorithms
,
implementation
2200
x1579
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x15813
1789A
Serval and Mocha's Array
brute force
,
math
,
number theory
800
x17133
1788D
Moving Dots
binary search
,
brute force
,
combinatorics
,
math
,
two pointers
2000
x3735
1788A
One and Two
brute force
,
implementation
,
math
800
x27753
1787G
Colorful Tree Again
brute force
,
data structures
,
trees
3000
x396
1786B
Cake Assembly Line
brute force
,
sortings
1300
x8640
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x303
1784A
Monsters (easy version)
brute force
,
greedy
1000
x14535
1783E
Game of the Year
brute force
,
data structures
,
math
,
number theory
2300
x2034
1783D
Different Arrays
brute force
,
dp
,
implementation
2000
x4195
1781E
Rectangle Shrinking
binary search
,
brute force
,
data structures
,
greedy
,
implementation
,
two pointers
2300
x1266
1781D
Many Perfect Squares
brute force
,
math
,
number theory
1800
x5264
1781C
Equal Frequencies
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
,
strings
1600
x7084
1781B
Going to the Cinema
brute force
,
greedy
,
sortings
1000
x13246
1780F
Three Chairs
bitmasks
,
brute force
,
combinatorics
,
data structures
,
dp
,
number theory
,
sortings
2300
x1381
1780E
Josuke and Complete Graph
binary search
,
brute force
,
data structures
,
math
,
number theory
2400
x1310
1780B
GCD Partition
brute force
,
greedy
,
math
,
number theory
1100
x16645
1779H
Olympic Team Building
brute force
,
meet-in-the-middle
3500
x131
1778C
Flexible String
bitmasks
,
brute force
,
strings
1600
x7694
1775A1
Gardener and the Capybaras (easy version)
brute force
,
constructive algorithms
,
implementation
800
x19331
1774G
Segment Covering
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
trees
3200
x368
1774F2
Magician and Pigs (Hard Version)
binary search
,
brute force
,
data structures
,
implementation
2700
x643
1774F1
Magician and Pigs (Easy Version)
brute force
,
data structures
,
implementation
2400
x1023
1774D
Same Count One
brute force
,
constructive algorithms
,
greedy
,
implementation
,
two pointers
1600
x7447
1773I
Interactive Factorial Guessing
brute force
,
games
,
implementation
,
interactive
2500
x458
1772B
Matrix Rotation
brute force
,
implementation
800
x28217
1771E
Hossam and a Letter
brute force
,
dp
,
implementation
,
two pointers
2500
x662
1771D
Hossam and (sub-)palindromic tree
brute force
,
data structures
,
dfs and similar
,
dp
,
strings
,
trees
2100
x2605
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x8291
1770A
Koxia and Whiteboards
brute force
,
greedy
1000
x22918
1769D3
Игра в Девятку III
*special problem
,
brute force
2300
x115
1769D2
Игра в Девятку II
*special problem
,
brute force
2200
x186
1769D1
Игра в Девятку I
*special problem
,
brute force
,
dp
1800
x368
1769C1
Подкрутка I
*special problem
,
brute force
,
dp
,
greedy
1200
x932
1769B2
Копирование файлов II
*special problem
,
binary search
,
brute force
,
math
1400
x857
1769B1
Копирование файлов I
*special problem
,
brute force
,
implementation
,
math
1000
x1315
1767E
Algebra Flash
bitmasks
,
brute force
,
dp
,
graphs
,
math
,
meet-in-the-middle
,
trees
2500
x843
1766E
Decomposition
binary search
,
brute force
,
data structures
,
divide and conquer
,
dp
,
two pointers
2300
x1133
1766A
Extremely Round
brute force
,
implementation
800
x24098
1765L
Project Manager
brute force
,
data structures
,
implementation
2400
x563
1765E
Exchange
brute force
,
math
1000
x9561
1764F
Doremy's Experimental Tree
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
sortings
,
trees
2500
x923
1763C
Another Array Problem
brute force
,
constructive algorithms
,
greedy
2000
x6301
1763B
Incinerate
binary search
,
brute force
,
data structures
,
implementation
,
math
,
sortings
1200
x13944
1761E
Make It Connected
binary search
,
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
matrices
,
trees
,
two pointers
2400
x1738
1761A
Two Permutations
brute force
,
constructive algorithms
800
x17049
1759E
The Humanoid
brute force
,
dp
,
sortings
1500
x10034
1759D
Make It Round
brute force
,
number theory
1400
x12319
1758D
Range = √Sum
binary search
,
brute force
,
constructive algorithms
,
math
,
two pointers
1800
x6882
1753F
Minecraft Series
brute force
,
two pointers
3500
x185
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x309
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