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Codeforces Round 1101 (Div. 2)
00:34:47
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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
2044E
Insane Problem
binary search
,
greedy
,
implementation
,
math
,
number theory
1300
x18236
2044D
Harder Problem
constructive algorithms
,
greedy
,
math
1100
x24217
2044C
Hard Problem
greedy
,
math
800
x45519
2044B
Normal Problem
implementation
,
strings
800
x52383
2044A
Easy Problem
brute force
,
math
800
x61690
2043G
Problem with Queries
brute force
,
data structures
,
implementation
3000
x329
2043F
Nim
bitmasks
,
brute force
,
combinatorics
,
dp
,
games
,
greedy
,
implementation
,
shortest paths
2700
x910
2043E
Matrix Transformation
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
implementation
2300
x1846
2043D
Problem about GCD
brute force
,
flows
,
math
,
number theory
1800
x7723
2043C
Sums on Segments
binary search
,
brute force
,
data structures
,
dp
,
greedy
,
math
1600
x11298
2043B
Digits
math
,
number theory
1100
x21862
2043A
Coin Transformation
brute force
,
math
800
x27054
2042F
Two Subarrays
data structures
,
dp
,
implementation
,
matrices
2600
x912
2042E
Vertex Pairs
binary search
,
brute force
,
data structures
,
dfs and similar
,
divide and conquer
,
greedy
,
implementation
,
trees
2900
x527
2042D
Recommendations
data structures
,
implementation
,
sortings
,
two pointers
1900
x5313
2042C
Competitive Fishing
greedy
1800
x8702
2042B
Game with Colored Marbles
games
,
greedy
900
x19561
2042A
Greedy Monocarp
greedy
,
sortings
800
x20879
2041N
Railway Construction
3300
x82
2041M
Selection Sort
binary search
,
data structures
,
greedy
,
two pointers
2000
x1340
2041L
Building Castle
2900
x70
2041K
Trophic Balance Species
binary search
,
brute force
,
dfs and similar
,
graphs
3100
x122
2041J
Bottle Arrangement
data structures
,
divide and conquer
,
dp
,
dsu
,
greedy
2700
x269
2041I
Auto Complete
binary search
,
data structures
,
hashing
,
implementation
,
sortings
,
strings
,
trees
2300
x677
2041H
Sheet Music
combinatorics
,
dp
,
math
2300
x1041
2041G
Grid Game
3100
x67
2041F
Segmentation Folds
brute force
,
dfs and similar
,
number theory
2400
x512
2041E
Beautiful Array
constructive algorithms
,
math
1200
x9945
2041D
Drunken Maze
brute force
,
dfs and similar
,
graphs
,
shortest paths
1700
x4940
2041C
Cube
bitmasks
,
dfs and similar
,
dp
2000
x2032
2041B
Bowling Frame
binary search
,
brute force
,
math
1200
x7238
2041A
The Bento Box Adventure
implementation
,
sortings
1300
x11373
2040F
Number of Cubes
combinatorics
,
dp
,
math
,
number theory
2700
x462
2040E
Control of Randomness
combinatorics
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
probabilities
,
trees
2100
x2690
2040D
Non Prime Tree
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
,
number theory
,
trees
,
two pointers
1900
x5876
2040C
Ordered Permutations
bitmasks
,
combinatorics
,
constructive algorithms
,
greedy
,
math
,
two pointers
1600
x10855
2040B
Paint a Strip
constructive algorithms
,
greedy
,
math
1000
x24231
2040A
Game of Division
games
,
math
800
x24474
2039H2
Cool Swap Walk (Hard Version)
constructive algorithms
,
constructive algorithms
,
constructive algorithms
,
implementation
,
sortings
3500
x94
2039H1
Cool Swap Walk (Easy Version)
constructive algorithms
,
implementation
,
sortings
3500
x102
2039G
Shohag Loves Pebae
math
,
number theory
3500
x83
2039F2
Shohag Loves Counting (Hard Version)
dp
,
number theory
3200
x296
2039F1
Shohag Loves Counting (Easy Version)
combinatorics
,
dp
,
math
,
number theory
2800
x514
2039E
Shohag Loves Inversions
combinatorics
,
dp
,
implementation
,
math
2200
x2377
2039D
Shohag Loves GCD
constructive algorithms
,
greedy
,
math
,
number theory
1700
x7022
2039C2
Shohag Loves XOR (Hard Version)
bitmasks
,
brute force
,
math
,
number theory
1800
x4996
2039C1
Shohag Loves XOR (Easy Version)
bitmasks
,
brute force
,
math
,
number theory
1200
x13596
2039B
Shohag Loves Strings
constructive algorithms
,
greedy
,
implementation
,
strings
1000
x17391
2039A
Shohag Loves Mod
constructive algorithms
,
number theory
800
x18159
2038N
Fixing the Expression
implementation
800
x11375
2038M
Royal Flush
dp
,
implementation
2800
x331
2038L
Bridge Renovation
brute force
,
dp
,
greedy
,
math
,
two pointers
1400
x8064
2038K
Grid Walk
brute force
,
dp
,
greedy
,
math
,
number theory
2100
x1789
2038J
Waiting for...
greedy
,
implementation
800
x8820
2038I
Polyathlon
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2500
x750
2038H
Galactic Council
flows
3000
x185
2038G
Guess One Character
constructive algorithms
,
implementation
,
interactive
1900
x2983
2038F
Alternative Platforms
combinatorics
,
data structures
,
fft
,
math
,
sortings
2500
x485
2038E
Barrels
data structures
,
greedy
,
math
2900
x156
2038D
Divide OR Conquer
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
2400
x862
2038C
DIY
data structures
,
geometry
,
greedy
,
sortings
1400
x6998
2038B
Make It Equal
binary search
,
brute force
,
greedy
,
math
2100
x1936
2038A
Bonus Project
games
,
greedy
1400
x5481
2037G
Natlan Exploring
bitmasks
,
combinatorics
,
data structures
,
dp
,
math
,
number theory
2000
x3776
2037F
Ardent Flames
binary search
,
data structures
,
math
,
sortings
,
two pointers
2100
x2981
2037E
Kachina's Favorite Binary String
dp
,
greedy
,
interactive
,
two pointers
1600
x7438
2037D
Sharky Surfing
data structures
,
greedy
,
two pointers
1300
x14819
2037C
Superultra's Favorite Permutation
constructive algorithms
,
greedy
,
math
,
number theory
1000
x25652
2037B
Intercepted Inputs
brute force
,
implementation
800
x25583
2037A
Twice
implementation
800
x35880
2036G
Library of Magic
binary search
,
constructive algorithms
,
divide and conquer
,
interactive
,
math
,
number theory
2200
x1688
2036F
XORificator 3000
bitmasks
,
dp
,
number theory
,
two pointers
1900
x5331
2036E
Reverse the Rivers
binary search
,
constructive algorithms
,
data structures
,
greedy
1600
x9635
2036D
I Love 1543
brute force
,
implementation
,
matrices
1300
x16089
2036C
Anya and 1100
brute force
,
implementation
1100
x22277
2036B
Startup
greedy
,
sortings
800
x29795
2036A
Quintomania
implementation
800
x40813
2035H
Peak Productivity Forces
constructive algorithms
3500
x100
2035G2
Go Learn! (Hard Version)
divide and conquer
,
dp
3500
x112
2035G1
Go Learn! (Easy Version)
dp
,
trees
3300
x172
2035F
Tree Operations
binary search
,
brute force
,
dfs and similar
,
dp
,
trees
2500
x1104
2035E
Monster
binary search
,
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
,
ternary search
2300
x1975
2035D
Yet Another Real Number Problem
binary search
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
math
1800
x5850
2035C
Alya and Permutation
bitmasks
,
constructive algorithms
,
math
1400
x11605
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x20666
2035A
Sliding
implementation
,
math
800
x17867
2034H
Rayan vs. Rayaneh
brute force
,
dfs and similar
,
dp
,
number theory
3300
x196
2034G2
Simurgh's Watch (Hard Version)
greedy
,
implementation
3500
x82
2034G1
Simurgh's Watch (Easy Version)
constructive algorithms
,
greedy
,
implementation
,
sortings
3500
x78
2034F2
Khayyam's Royal Decree (Hard Version)
combinatorics
,
dp
,
math
,
sortings
2800
x601
2034F1
Khayyam's Royal Decree (Easy Version)
combinatorics
,
dp
,
math
,
sortings
2500
x897
2034E
Permutations Harmony
combinatorics
,
constructive algorithms
,
greedy
,
hashing
,
math
2200
x2031
2034D
Darius' Wisdom
constructive algorithms
,
greedy
,
implementation
,
sortings
1600
x6656
2034C
Trapped in the Witch's Labyrinth
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
1400
x9201
2034B
Rakhsh's Revival
data structures
,
greedy
,
implementation
,
two pointers
1000
x15865
2034A
King Keykhosrow's Mystery
brute force
,
chinese remainder theorem
,
math
,
number theory
800
x18454
2033G
Sakurako and Chefir
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x2009
2033F
Kosuke's Sloth
brute force
,
math
,
number theory
1800
x7186
2033E
Sakurako, Kosuke, and the Permutation
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
1400
x14231
2033D
Kousuke's Assignment
data structures
,
dp
,
dsu
,
greedy
,
math
1300
x18280
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