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Name
1942C2
Bessie's Birthday Cake (Hard Version)
geometry
,
greedy
,
math
1700
x5603
1942C1
Bessie's Birthday Cake (Easy Version)
geometry
,
greedy
,
math
1300
x9803
1942B
Bessie and MEX
constructive algorithms
,
math
1100
x12594
1942A
Farmer John's Challenge
constructive algorithms
,
math
800
x15990
1941G
Rudolf and Subway
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2000
x3043
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x5299
1941E
Rudolf and k Bridges
binary search
,
data structures
,
dp
,
two pointers
1600
x8354
1941D
Rudolf and the Ball Game
dfs and similar
,
dp
,
implementation
1200
x16885
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x30235
1941B
Rudolf and 121
brute force
,
dp
,
greedy
,
math
1000
x26895
1941A
Rudolf and the Ticket
brute force
,
math
800
x39455
1940D
Almost Certainly
*special problem
,
constructive algorithms
,
data structures
,
sortings
x125
1940C
Burenka and Pether
*special problem
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
sortings
,
trees
x33
1940B
Three Arrays
*special problem
,
constructive algorithms
,
implementation
,
sortings
x177
1940A
Parallel Universes
*special problem
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
x81
1939D
Big Persimmon
*special problem
,
dp
,
games
x84
1939C
More Gifts
*special problem
,
dfs and similar
,
two pointers
x278
1939B
Evidence Board
*special problem
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
x210
1939A
Draw Polygon Lines
*special problem
,
constructive algorithms
,
dp
,
geometry
,
interactive
x20
1938M
Zig-zag
3500
x46
1938L
XOR Operations
2800
x255
1938K
Tree Quiz
2400
x540
1938J
There and Back Again
2100
x1127
1938I
Symmetric Boundary
2800
x54
1938H
Pho Restaurant
1600
x1899
1938G
Personality Test
2300
x885
1938F
Forming Groups
2400
x664
1938E
Duplicates
2200
x871
1938D
Bánh Bò
3300
x79
1938C
Bit Counting Sequence
1900
x1278
1938B
Attraction Score
3000
x150
1938A
Antiparticle Antiphysics
3500
x38
1937B
Binary Path
dp
,
greedy
,
implementation
1300
x13364
1937A
Shuffle Party
implementation
,
math
800
x21745
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x70
1936E
Yet Yet Another Permutation Problem
divide and conquer
,
fft
,
math
3400
x98
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x427
1936C
Pokémon Arena
data structures
,
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
2400
x1127
1936B
Pinball
binary search
,
data structures
,
implementation
,
math
,
two pointers
2000
x2503
1936A
Bitwise Operation Wizard
bitmasks
,
constructive algorithms
,
greedy
,
interactive
,
math
1700
x6678
1935F
Andrey's Tree
binary search
,
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
implementation
,
trees
2800
x404
1935E
Distance Learning Courses in MAC
bitmasks
,
brute force
,
data structures
,
greedy
,
math
2400
x1191
1935D
Exam in MAC
binary search
,
combinatorics
,
implementation
,
math
1800
x7451
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x7281
1935B
Informatics in MAC
constructive algorithms
1200
x16771
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x25840
1934E
Weird LCM Operations
brute force
,
constructive algorithms
,
number theory
3000
x187
1934D2
XOR Break --- Game Version
bitmasks
,
games
,
greedy
,
interactive
2400
x1218
1934D1
XOR Break --- Solo Version
bitmasks
,
constructive algorithms
,
greedy
2100
x3132
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x6136
1934B
Yet Another Coin Problem
brute force
,
dp
,
greedy
,
math
1200
x16997
1934A
Too Min Too Max
greedy
,
math
800
x23716
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
,
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
math
2300
x893
1933F
Turtle Mission: Robot and the Earthquake
dfs and similar
,
dp
,
graphs
,
shortest paths
2100
x2240
1933E
Turtle vs. Rabbit Race: Optimal Trainings
binary search
,
implementation
,
math
,
ternary search
1500
x9908
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x18142
1933C
Turtle Fingers: Count the Values of k
brute force
,
implementation
,
math
,
number theory
1100
x20837
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x30313
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35866
1932G
Moving Platforms
graphs
,
math
,
number theory
,
shortest paths
2300
x900
1932F
Feed Cats
data structures
,
dp
,
sortings
1900
x3485
1932E
Final Countdown
implementation
,
math
,
number theory
1600
x7003
1932D
Card Game
greedy
,
implementation
1400
x10148
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x14004
1932B
Chaya Calendar
number theory
1100
x18751
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x27171
1931G
One-Dimensional Puzzle
combinatorics
,
math
,
number theory
2000
x2488
1931F
Chat Screenshots
combinatorics
,
dfs and similar
,
graphs
1700
x7071
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x13636
1931D
Divisible Pairs
combinatorics
,
math
,
number theory
1300
x16207
1931C
Make Equal Again
brute force
,
greedy
,
math
1000
x26486
1931B
Make Equal
greedy
800
x30320
1931A
Recovering a Small String
brute force
,
strings
800
x33912
1930I
Counting Is Fun
combinatorics
3500
x55
1930H
Interactive Mex Tree
constructive algorithms
,
dfs and similar
,
interactive
,
trees
3300
x128
1930G
Prefix Max Set Counting
data structures
,
dp
,
trees
3100
x257
1930F
Maximize the Difference
bitmasks
,
brute force
,
dfs and similar
2700
x620
1930E
2..3...4.... Wonderful! Wonderful!
combinatorics
,
dp
,
math
2400
x1009
1930D2
Sum over all Substrings (Hard Version)
bitmasks
,
divide and conquer
,
dp
,
dsu
,
greedy
,
implementation
,
strings
2100
x2396
1930D1
Sum over all Substrings (Easy Version)
brute force
,
dp
,
greedy
,
strings
1800
x3743
1930C
Lexicographically Largest
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
1700
x6499
1930B
Permutation Printing
brute force
,
constructive algorithms
,
math
1000
x13856
1930A
Maximise The Score
greedy
,
sortings
800
x17364
1929F
Sasha and the Wedding Binary Search Tree
brute force
,
combinatorics
,
data structures
,
dfs and similar
,
math
,
trees
2300
x1659
1929E
Sasha and the Happy Tree Cutting
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
2300
x1537
1929D
Sasha and a Walk in the City
combinatorics
,
dp
,
math
,
trees
1900
x4242
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x13494
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x24019
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x29300
1928F
Digital Patterns
combinatorics
,
data structures
,
implementation
,
math
2900
x215
1928E
Modular Sequence
brute force
,
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
,
number theory
2300
x1571
1928D
Lonely Mountain Dungeons
brute force
,
data structures
,
greedy
,
math
,
ternary search
1900
x3811
1928C
Physical Education Lesson
brute force
,
math
,
number theory
1600
x7653
1928B
Equalize
binary search
,
greedy
,
sortings
,
two pointers
1200
x15574
1928A
Rectangle Cutting
geometry
,
math
800
x21407
1927G
Paint Charges
data structures
,
dp
,
greedy
,
math
2300
x1512
1927F
Microcycle
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
1900
x3872
1927E
Klever Permutation
constructive algorithms
,
math
,
two pointers
1400
x12625
1927D
Find the Different Ones!
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
two pointers
1300
x18649
1927C
Choose the Different Ones!
brute force
,
greedy
,
math
1000
x25908
←
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Educational Codeforces Round 166 (Rated for Div. 2)
10:49:52
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