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Codeforces Round 973 (Div. 2)
3 days
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
implementation
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
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Status
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Custom test
Problems
#
Name
1111A
Superhero Transformation
implementation
,
strings
1000
x16853
1109C
Sasha and a Patient Friend
binary search
,
data structures
,
implementation
2800
x252
1109A
Sasha and a Bit of Relax
dp
,
implementation
1600
x8477
1108E2
Array and Segments (Hard version)
data structures
,
implementation
2100
x2198
1108E1
Array and Segments (Easy version)
brute force
,
greedy
,
implementation
1800
x4518
1108A
Two distinct points
implementation
800
x21698
1107D
Compression
dp
,
implementation
,
math
,
number theory
1800
x3721
1106C
Lunar New Year and Number Division
greedy
,
implementation
,
math
,
sortings
900
x14647
1106B
Lunar New Year and Food Ordering
data structures
,
implementation
1500
x6743
1106A
Lunar New Year and Cross Counting
implementation
800
x12323
1105D
Kilani and the Game
dfs and similar
,
graphs
,
implementation
,
shortest paths
1900
x4078
1105B
Zuhair and Strings
brute force
,
implementation
,
strings
1100
x9883
1105A
Salem and Sticks
brute force
,
implementation
1100
x10922
1104B
Game with string
data structures
,
implementation
,
math
1200
x14821
1104A
Splitting into digits
constructive algorithms
,
implementation
,
math
800
x15390
1103A
Grid game
constructive algorithms
,
implementation
1400
x9749
1101E
Polycarp's New Job
implementation
1500
x7800
1101B
Accordion
greedy
,
implementation
1300
x10473
1100B
Build a Contest
data structures
,
implementation
1300
x11115
1100A
Roman and Browser
implementation
1000
x10134
1099C
Postcard
constructive algorithms
,
implementation
1200
x9599
1099A
Snowball
implementation
800
x12875
1098E
Fedya the Potter
binary search
,
implementation
,
math
,
number theory
3400
x221
1097C
Yuhao and a Parenthesis
greedy
,
implementation
1400
x8437
1097A
Gennady and a Card Game
brute force
,
implementation
800
x38614
1096A
Find Divisible
greedy
,
implementation
,
math
800
x18696
1095E
Almost Regular Bracket Sequence
implementation
1900
x4100
1095D
Circular Dance
implementation
1600
x7539
1095B
Array Stabilization
implementation
900
x21866
1095A
Repeating Cipher
implementation
800
x31276
1092D2
Great Vova Wall (Version 2)
data structures
,
implementation
2200
x2971
1092D1
Great Vova Wall (Version 1)
greedy
,
implementation
,
math
2200
x4711
1092A
Uniform String
implementation
800
x16192
1091E
New Year and the Acquaintance Estimation
binary search
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
sortings
2400
x1001
1091B
New Year and the Treasure Geolocation
brute force
,
constructive algorithms
,
greedy
,
implementation
1200
x10649
1091A
New Year and the Christmas Ornament
brute force
,
implementation
,
math
800
x17469
1090M
The Pleasant Walk
implementation
1000
x6148
1090G
Combostone
games
,
implementation
2500
x105
1089J
JS Minification
greedy
,
implementation
3200
x124
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2828
1088B
Ehab and subtraction
implementation
,
sortings
1000
x12572
1085E
Vasya and Templates
greedy
,
implementation
,
strings
2300
x1058
1085D
Minimum Diameter Tree
constructive algorithms
,
implementation
,
trees
1700
x5417
1085C
Connect Three
implementation
,
math
1600
x5425
1085A
Right-Left Cipher
implementation
,
strings
800
x12137
1084C
The Fair Nut and String
combinatorics
,
dp
,
implementation
1500
x8027
1084B
Kvass and the Fair Nut
greedy
,
implementation
1200
x7798
1084A
The Fair Nut and Elevator
brute force
,
implementation
1000
x7913
1083D
The Fair Nut's getting crazy
data structures
,
implementation
3500
x235
1082D
Maximum Diameter Graph
constructive algorithms
,
graphs
,
implementation
1800
x3791
1082A
Vasya and Book
implementation
,
math
1200
x8529
1081F
Tricky Interactor
constructive algorithms
,
implementation
,
interactive
2600
x462
1081B
Farewell Party
constructive algorithms
,
implementation
1500
x4440
1080D
Olya and magical square
constructive algorithms
,
implementation
,
math
2000
x1541
1080C
Masha and two friends
implementation
1500
x4027
1076B
Divisor Subtraction
implementation
,
math
,
number theory
1200
x12896
1075B
Taxi drivers and Lyft
implementation
,
sortings
1200
x4238
1075A
The King's Race
implementation
,
math
800
x8479
1073B
Vasya and Books
implementation
,
math
1000
x10543
1073A
Diverse Substring
implementation
,
strings
1000
x15422
1070K
Video Posts
implementation
1100
x4878
1070H
BerOS File Suggestion
brute force
,
implementation
1500
x3641
1070G
Monsters and Potions
brute force
,
dp
,
greedy
,
implementation
2300
x832
1066E
Binary Numbers AND Sum
data structures
,
implementation
,
math
1700
x6140
1066D
Boxes Packing
binary search
,
implementation
1800
x5450
1066C
Books Queries
implementation
1400
x9607
1065A
Vasya and Chocolate
implementation
,
math
800
x14612
1062D
Fun with Integers
dfs and similar
,
graphs
,
implementation
,
math
1800
x3939
1062C
Banh-mi
greedy
,
implementation
,
math
1600
x5399
1062A
A Prank
greedy
,
implementation
1300
x8784
1061D
TV Shows
data structures
,
greedy
,
implementation
,
sortings
2000
x2358
1061C
Multiplicity
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x8760
1061B
Views Matter
greedy
,
implementation
,
sortings
1400
x7286
1061A
Coins
greedy
,
implementation
,
math
800
x21787
1060C
Maximum Subrectangle
binary search
,
implementation
,
two pointers
1600
x4881
1059B
Forgery
implementation
1300
x6991
1059A
Cashier
implementation
1000
x12798
1056C
Pick Heroes
greedy
,
implementation
,
interactive
,
sortings
1700
x2355
1056A
Determine Line
implementation
800
x6618
1055D
Refactoring
greedy
,
implementation
,
strings
2400
x626
1055B
Alice and Hairdresser
dsu
,
implementation
1300
x4989
1054E
Chips Puzzle
constructive algorithms
,
implementation
,
math
2400
x483
1054D
Changing Array
greedy
,
implementation
1900
x2236
1054C
Candies Distribution
constructive algorithms
,
implementation
1500
x4273
1054B
Appending Mex
implementation
1000
x6574
1054A
Elevator or Stairs?
implementation
800
x9043
1051C
Vasya and Multisets
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9264
1051A
Vasya And Password
greedy
,
implementation
,
strings
1200
x8403
1046F
Splitting money
implementation
1400
x2757
1044E
Grid Sort
implementation
3100
x119
1043C
Smallest Word
constructive algorithms
,
greedy
,
implementation
1500
x6859
1043B
Lost Array
implementation
1200
x6258
1043A
Elections
implementation
,
math
800
x10767
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x15947
1042A
Benches
binary search
,
implementation
1100
x12848
1041A
Heist
greedy
,
implementation
,
sortings
800
x24947
1038D
Slime
dp
,
greedy
,
implementation
1800
x8341
1038A
Equality
implementation
,
strings
800
x14856
1033A
King Escape
dfs and similar
,
graphs
,
implementation
1000
x13518
1032D
Barcelonian Distance
geometry
,
implementation
1900
x2806
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