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Rayan
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Before contest
Codeforces Round 995 (Div. 3)
13:20:04
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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
2039D
Shohag Loves GCD
constructive algorithms
,
greedy
,
math
,
number theory
1700
x4834
2039C2
Shohag Loves XOR (Hard Version)
bitmasks
,
brute force
,
math
,
number theory
1800
x3695
2039C1
Shohag Loves XOR (Easy Version)
bitmasks
,
brute force
,
math
,
number theory
1200
x9534
2039B
Shohag Loves Strings
constructive algorithms
,
greedy
,
implementation
,
strings
1000
x12130
2039A
Shohag Loves Mod
constructive algorithms
,
number theory
800
x14701
2038N
Fixing the Expression
implementation
800
x8234
2038M
Royal Flush
dp
,
implementation
2800
x224
2038L
Bridge Renovation
brute force
,
dp
,
greedy
,
math
,
two pointers
1400
x4557
2038K
Grid Walk
brute force
,
dp
,
greedy
,
math
,
number theory
2100
x1180
2038J
Waiting for...
greedy
,
implementation
800
x6355
2038I
Polyathlon
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2500
x547
2038H
Galactic Council
flows
3000
x105
2038G
Guess One Character
constructive algorithms
,
implementation
,
interactive
1900
x2030
2038F
Alternative Platforms
combinatorics
,
data structures
,
fft
,
math
,
sortings
2500
x361
2038E
Barrels
data structures
,
greedy
,
math
2900
x112
2038D
Divide OR Conquer
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
2400
x579
2038C
DIY
data structures
,
geometry
,
greedy
,
sortings
1400
x3963
2038B
Make It Equal
binary search
,
brute force
,
greedy
,
math
2100
x1317
2038A
Bonus Project
games
,
greedy
1400
x3250
2037G
Natlan Exploring
bitmasks
,
combinatorics
,
data structures
,
dp
,
math
,
number theory
2000
x2401
2037F
Ardent Flames
binary search
,
data structures
,
math
,
sortings
,
two pointers
2100
x1962
2037E
Kachina's Favorite Binary String
dp
,
greedy
,
interactive
,
two pointers
1600
x5214
2037D
Sharky Surfing
data structures
,
greedy
,
two pointers
1300
x10479
2037C
Superultra's Favorite Permutation
constructive algorithms
,
greedy
,
math
,
number theory
1000
x18525
2037B
Intercepted Inputs
brute force
,
implementation
800
x20763
2037A
Twice
implementation
800
x27302
2036G
Library of Magic
binary search
,
constructive algorithms
,
divide and conquer
,
interactive
,
math
,
number theory
2200
x1205
2036F
XORificator 3000
bitmasks
,
dp
,
number theory
,
two pointers
1900
x3613
2036E
Reverse the Rivers
binary search
,
constructive algorithms
,
data structures
,
greedy
1600
x7096
2036D
I Love 1543
brute force
,
implementation
,
matrices
1300
x12393
2036C
Anya and 1100
brute force
,
implementation
1100
x17672
2036B
Startup
greedy
,
sortings
800
x24500
2036A
Quintomania
implementation
800
x32694
2035H
Peak Productivity Forces
constructive algorithms
3500
x61
2035G2
Go Learn! (Hard Version)
divide and conquer
,
dp
3500
x80
2035G1
Go Learn! (Easy Version)
dp
,
trees
3300
x138
2035F
Tree Operations
binary search
,
brute force
,
dfs and similar
,
dp
,
trees
2500
x840
2035E
Monster
binary search
,
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
,
ternary search
2300
x1593
2035D
Yet Another Real Number Problem
binary search
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
math
1800
x4704
2035C
Alya and Permutation
bitmasks
,
constructive algorithms
,
math
1400
x8552
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x16018
2035A
Sliding
implementation
,
math
800
x15762
2034H
Rayan vs. Rayaneh
brute force
,
dfs and similar
,
dp
,
number theory
3300
x83
2034G2
Simurgh's Watch (Hard Version)
greedy
,
implementation
3500
x26
2034G1
Simurgh's Watch (Easy Version)
constructive algorithms
,
greedy
,
implementation
,
sortings
3500
x36
2034F2
Khayyam's Royal Decree (Hard Version)
combinatorics
,
dp
,
math
,
sortings
2800
x347
2034F1
Khayyam's Royal Decree (Easy Version)
combinatorics
,
dp
,
math
,
sortings
2500
x594
2034E
Permutations Harmony
combinatorics
,
constructive algorithms
,
greedy
,
hashing
,
math
2200
x1461
2034D
Darius' Wisdom
constructive algorithms
,
greedy
,
implementation
,
sortings
1600
x4459
2034C
Trapped in the Witch's Labyrinth
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
1400
x6052
2034B
Rakhsh's Revival
data structures
,
greedy
,
implementation
,
two pointers
1000
x11076
2034A
King Keykhosrow's Mystery
brute force
,
chinese remainder theorem
,
math
,
number theory
800
x14573
2033G
Sakurako and Chefir
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x1366
2033F
Kosuke's Sloth
brute force
,
math
,
number theory
1800
x5481
2033E
Sakurako, Kosuke, and the Permutation
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
1400
x10456
2033D
Kousuke's Assignment
data structures
,
dp
,
dsu
,
greedy
,
math
1300
x13669
2033C
Sakurako's Field Trip
dp
,
greedy
,
two pointers
1400
x13293
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x23825
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x34252
2032F
Peanuts
combinatorics
,
dp
,
games
,
math
2700
x303
2032E
Balanced
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2400
x1049
2032D
Genokraken
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
interactive
,
trees
,
two pointers
1800
x4825
2032C
Trinity
binary search
,
math
,
sortings
,
two pointers
1400
x12077
2032B
Medians
constructive algorithms
,
greedy
,
implementation
,
math
1100
x16526
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x21228
2031F
Penchick and Even Medians
binary search
,
constructive algorithms
,
interactive
,
probabilities
2800
x303
2031E
Penchick and Chloe's Trees
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
math
,
sortings
,
trees
2100
x1992
2031D
Penchick and Desert Rabbit
binary search
,
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
two pointers
1700
x6576
2031C
Penchick and BBQ Buns
constructive algorithms
,
math
,
number theory
1300
x11217
2031B
Penchick and Satay Sticks
brute force
,
greedy
,
sortings
900
x15704
2031A
Penchick and Modern Monument
constructive algorithms
,
dp
,
greedy
,
math
800
x16900
2030G2
The Destruction of the Universe (Hard Version)
combinatorics
,
math
3100
x118
2030G1
The Destruction of the Universe (Easy Version)
combinatorics
,
greedy
,
math
2900
x159
2030F
Orangutan Approved Subarrays
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
2400
x767
2030E
MEXimize the Score
combinatorics
,
data structures
,
dp
,
greedy
,
implementation
,
math
2200
x1405
2030D
QED's Favorite Permutation
data structures
,
implementation
,
sortings
1700
x6537
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x16457
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x20607
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x24089
2029I
Variance Challenge
flows
,
graphs
,
greedy
3400
x31
2029H
Message Spread
bitmasks
,
brute force
,
combinatorics
,
dp
3500
x51
2029G
Balanced Problem
data structures
,
dp
3000
x140
2029F
Palindrome Everywhere
constructive algorithms
,
graphs
,
greedy
2500
x672
2029E
Common Generator
brute force
,
constructive algorithms
,
math
,
number theory
2100
x2605
2029D
Cool Graph
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
1900
x2862
2029C
New Rating
binary search
,
data structures
,
dp
,
greedy
1700
x5267
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x8937
2029A
Set
greedy
,
math
800
x11576
2028F
Alice's Adventures in Addition
bitmasks
,
brute force
,
dp
,
implementation
2700
x356
2028E
Alice's Adventures in the Rabbit Hole
combinatorics
,
dfs and similar
,
dp
,
games
,
greedy
,
math
,
probabilities
,
trees
2300
x1326
2028D
Alice's Adventures in Cards
constructive algorithms
,
data structures
,
dp
,
graphs
,
greedy
,
implementation
,
ternary search
2000
x2657
2028C
Alice's Adventures in Cutting Cake
binary search
,
dp
,
greedy
,
two pointers
1600
x6866
2028B
Alice's Adventures in Permuting
binary search
,
implementation
,
math
1400
x9579
2028A
Alice's Adventures in ''Chess''
brute force
,
implementation
,
math
900
x15267
2027E2
Bit Game (Hard Version)
bitmasks
,
dp
,
math
3100
x57
2027E1
Bit Game (Easy Version)
bitmasks
,
brute force
,
games
,
math
2800
x145
2027D2
The Endspeaker (Hard Version)
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
2200
x1407
2027D1
The Endspeaker (Easy Version)
binary search
,
dp
,
graphs
,
greedy
,
implementation
,
two pointers
1700
x5031
2027C
Add Zeros
brute force
,
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
1500
x9643
2027B
Stalin Sort
brute force
,
greedy
1100
x14280
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