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Problems
#
Name
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x23965
1855A
Dalton the Teacher
greedy
,
math
800
x27240
1854F
Mark and Spaceship
brute force
,
dp
3500
x112
1854E
Game Bundles
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
3000
x383
1854D
Michael and Hotel
binary search
,
interactive
,
trees
3000
x523
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1407
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3356
1854A2
Dual (Hard Version)
constructive algorithms
,
math
1900
x6720
1854A1
Dual (Easy Version)
constructive algorithms
,
math
1400
x13421
1853B
Fibonaccharsis
binary search
,
brute force
,
math
1200
x16572
1853A
Desorting
brute force
,
greedy
,
math
800
x28205
1852F
Panda Meetups
data structures
,
dp
,
flows
3500
x99
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x157
1852D
Miriany and Matchstick
constructive algorithms
,
dp
,
greedy
2800
x431
1852C
Ina of the Mountain
data structures
,
dp
,
greedy
,
math
2400
x1461
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4162
1852A
Ntarsis' Set
binary search
,
math
,
number theory
1800
x7593
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2943
1851F
Lisa and the Martians
bitmasks
,
greedy
,
math
,
strings
,
trees
1800
x5330
1851E
Nastya and Potions
dfs and similar
,
dp
,
graphs
,
sortings
1500
x9488
1851D
Prefix Permutation Sums
implementation
,
math
1300
x14415
1851C
Tiles Comeback
greedy
1000
x22334
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x28175
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28698
1850H
The Third Letter
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1700
x7556
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11285
1850F
We Were Both Children
brute force
,
implementation
,
math
,
number theory
1300
x17329
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x20998
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32639
1850C
Word on the Paper
implementation
,
strings
800
x41361
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40589
1850A
To My Critics
implementation
,
sortings
800
x51522
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x657
1849E
Max to the Right of Min
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
two pointers
2300
x1519
1849D
Array Painting
constructive algorithms
,
greedy
,
two pointers
1700
x7805
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x9885
1849B
Monsters
greedy
,
math
,
sortings
1000
x22873
1849A
Morning Sandwich
implementation
,
math
800
x27109
1848F
Vika and Wiki
binary search
,
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
2400
x1454
1848E
Vika and Stone Skipping
brute force
,
implementation
,
math
,
number theory
2600
x746
1848D
Vika and Bonuses
binary search
,
brute force
,
math
,
ternary search
2200
x2519
1848C
Vika and Price Tags
math
,
number theory
1800
x5974
1848B
Vika and the Bridge
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1200
x13464
1848A
Vika and Her Friends
games
,
math
900
x16260
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x858
1847E
Triangle Platinum?
brute force
,
combinatorics
,
implementation
,
interactive
,
math
,
probabilities
2900
x317
1847D
Professor Higashikata
data structures
,
dsu
,
greedy
,
implementation
,
strings
1900
x3608
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12259
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x19152
1847A
The Man who became a God
greedy
,
sortings
800
x21698
1846G
Rudolf and CodeVid-23
bitmasks
,
dp
,
graphs
,
greedy
,
shortest paths
1900
x4069
1846F
Rudolph and Mimic
constructive algorithms
,
implementation
,
interactive
1800
x2890
1846E2
Rudolf and Snowflakes (hard version)
binary search
,
brute force
,
implementation
,
math
1800
x6610
1846E1
Rudolf and Snowflakes (simple version)
brute force
,
implementation
,
math
1300
x15451
1846D
Rudolph and Christmas Tree
constructive algorithms
,
geometry
,
math
1200
x18392
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x18004
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x26143
1846A
Rudolph and Cut the Rope
implementation
,
math
800
x31450
1845F
Swimmers in the Pool
dp
,
fft
,
math
,
number theory
2800
x354
1845E
Boxes and Balls
dp
,
implementation
,
math
2500
x1274
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7344
1845C
Strong Password
binary search
,
dp
,
greedy
,
strings
1400
x13383
1845B
Come Together
geometry
,
implementation
,
math
900
x20918
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x24732
1844H
Multiple of Three Cycles
combinatorics
,
data structures
,
dp
,
dsu
,
math
3400
x131
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x645
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x370
1844F1
Min Cost Permutation (Easy Version)
brute force
,
constructive algorithms
,
greedy
,
math
2600
x738
1844E
Great Grids
2-sat
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2400
x1689
1844D
Row Major
constructive algorithms
,
greedy
,
math
,
number theory
,
strings
1400
x11660
1844C
Particles
dp
,
greedy
,
implementation
,
math
1300
x14889
1844B
Permutations & Primes
constructive algorithms
,
math
1000
x17477
1844A
Subtraction Game
constructive algorithms
,
games
800
x23900
1843F2
Omsk Metro (hard version)
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
math
,
trees
2300
x1481
1843F1
Omsk Metro (simple version)
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
1800
x4998
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x11050
1843D
Apple Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
1200
x17093
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x31210
1843B
Long Long
greedy
,
math
,
two pointers
800
x28113
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x33074
1842I
Tenzing and Necklace
divide and conquer
,
dp
,
greedy
3500
x108
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x564
1842G
Tenzing and Random Operations
combinatorics
,
dp
,
math
,
probabilities
2800
x929
1842F
Tenzing and Tree
dfs and similar
,
greedy
,
shortest paths
,
sortings
,
trees
2500
x1247
1842E
Tenzing and Triangle
data structures
,
dp
,
geometry
,
greedy
,
math
2300
x1544
1842D
Tenzing and His Animal Friends
constructive algorithms
,
graphs
,
greedy
1900
x3923
1842C
Tenzing and Balls
dp
1500
x11752
1842B
Tenzing and Books
bitmasks
,
greedy
,
math
1100
x15745
1842A
Tenzing and Tsondu
games
,
math
800
x19482
1841F
Monocarp and a Strategic Game
geometry
,
sortings
,
two pointers
2700
x473
1841E
Fill the Matrix
data structures
,
greedy
,
math
2200
x1889
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4147
1841C
Ranom Numbers
brute force
,
dp
,
greedy
,
math
,
strings
1800
x7332
1841B
Keep it Beautiful
implementation
1000
x20627
1841A
Game with Board
constructive algorithms
,
games
800
x24259
1840G2
In Search of Truth (Hard Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2500
x902
1840G1
In Search of Truth (Easy Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2200
x2236
1840F
Railguns
brute force
,
dfs and similar
,
dp
,
graphs
2200
x1711
1840E
Character Blocking
data structures
,
hashing
,
implementation
1600
x7576
1840D
Wooden Toy Festival
binary search
,
greedy
,
sortings
1400
x12919
←
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Codeforces Round 946 (Div. 3)
05:44:13
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2-sat
binary search
bitmasks
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data structures
dfs and similar
divide and conquer
dp
dsu
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fft
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geometry
graph matchings
graphs
greedy
hashing
implementation
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