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Before contest
Codeforces Round 955 (Div. 2, with prizes from NEAR!)
08:11:11
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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
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Status
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Custom test
Problems
#
Name
1152A
Neko Finds Grapes
greedy
,
implementation
,
math
800
x15024
1151A
Maxim and Biology
brute force
,
strings
1000
x11054
1150B
Tiling Challenge
greedy
,
implementation
900
x10839
1150A
Stock Arbitraging
greedy
,
implementation
800
x11654
1148A
Another One Bites The Dust
greedy
800
x14776
1146A
Love "A"
implementation
,
strings
800
x21563
1144C
Two Shuffled Sequences
constructive algorithms
,
sortings
1000
x15065
1144B
Parity Alternated Deletions
greedy
,
implementation
,
sortings
900
x16849
1144A
Diverse Strings
implementation
,
strings
800
x18929
1143A
The Doors
implementation
800
x13173
1141B
Maximal Continuous Rest
implementation
900
x20922
1141A
Game 23
implementation
,
math
1000
x30368
1140A
Detective Book
implementation
1000
x12097
1139B
Chocolates
greedy
,
implementation
1000
x15877
1139A
Even Substrings
implementation
,
strings
800
x16505
1138A
Sushi for Two
binary search
,
greedy
,
implementation
900
x17616
1136B
Nastya Is Playing Computer Games
constructive algorithms
,
math
1000
x11577
1136A
Nastya Is Reading a Book
implementation
800
x16169
1133A
Middle of the Contest
implementation
1000
x16695
1132B
Discounts
greedy
,
sortings
900
x12790
1131A
Sea Battle
math
800
x12353
1130A
Be Positive
implementation
800
x11500
1118A
Water Buying
math
800
x19808
1117B
Emotes
greedy
,
math
,
sortings
1000
x14001
1114A
Got Any Grapes?
brute force
,
greedy
,
implementation
800
x18424
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x17069
1111A
Superhero Transformation
implementation
,
strings
1000
x16653
1110A
Parity
math
900
x14649
1108A
Two distinct points
implementation
800
x21427
1107B
Digital root
math
,
number theory
1000
x15240
1107A
Digits Sequence Dividing
greedy
,
strings
900
x11939
1106C
Lunar New Year and Number Division
greedy
,
implementation
,
math
,
sortings
900
x14355
1106A
Lunar New Year and Cross Counting
implementation
800
x12294
1104A
Splitting into digits
constructive algorithms
,
implementation
,
math
800
x15203
1102A
Integer Sequence Dividing
math
800
x23806
1101A
Minimum Integer
math
1000
x16823
1100A
Roman and Browser
implementation
1000
x10079
1099A
Snowball
implementation
800
x12800
1097A
Gennady and a Card Game
brute force
,
implementation
800
x37636
1096A
Find Divisible
greedy
,
implementation
,
math
800
x18475
1095B
Array Stabilization
implementation
900
x21413
1095A
Repeating Cipher
implementation
800
x30256
1093B
Letters Rearranging
constructive algorithms
,
greedy
,
sortings
,
strings
900
x16280
1093A
Dice Rolling
math
800
x17602
1092B
Teams Forming
sortings
800
x25891
1092A
Uniform String
implementation
800
x16042
1091A
New Year and the Christmas Ornament
brute force
,
implementation
,
math
800
x17368
1090M
The Pleasant Walk
implementation
1000
x6058
1089L
Lazyland
900
x3852
1088B
Ehab and subtraction
implementation
,
sortings
1000
x12434
1088A
Ehab and another construction problem
brute force
,
constructive algorithms
800
x16544
1085A
Right-Left Cipher
implementation
,
strings
800
x12086
1084A
The Fair Nut and Elevator
brute force
,
implementation
1000
x7842
1081A
Definite Game
constructive algorithms
,
math
800
x11953
1080B
Margarite and the best present
math
900
x11642
1080A
Petya and Origami
math
800
x17893
1077B
Disturbed People
greedy
1000
x18490
1077A
Frog Jumping
math
800
x29363
1075A
The King's Race
implementation
,
math
800
x8369
1073B
Vasya and Books
implementation
,
math
1000
x10464
1073A
Diverse Substring
implementation
,
strings
1000
x15086
1065A
Vasya and Chocolate
implementation
,
math
800
x14573
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21960
1061A
Coins
greedy
,
implementation
,
math
800
x21437
1060A
Phone Numbers
brute force
800
x13813
1059A
Cashier
implementation
1000
x12611
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x5858
1056A
Determine Line
implementation
800
x6564
1055A
Metro
graphs
900
x10485
1054B
Appending Mex
implementation
1000
x6472
1054A
Elevator or Stairs?
implementation
800
x9000
1051B
Relatively Prime Pairs
greedy
,
math
,
number theory
1000
x16757
1047B
Cover Points
geometry
,
math
900
x16978
1047A
Little C Loves 3 I
math
800
x19646
1043A
Elections
implementation
,
math
800
x10725
1041B
Buying a TV Set
math
1000
x13793
1041A
Heist
greedy
,
implementation
,
sortings
800
x24667
1040A
Palindrome Dance
greedy
1000
x9372
1038A
Equality
implementation
,
strings
800
x14469
1036A
Function Height
math
1000
x10064
1033A
King Escape
dfs and similar
,
graphs
,
implementation
1000
x13128
1032A
Kitchen Utensils
900
x6812
1031A
Golden Plate
implementation
,
math
800
x12769
1030A
In Search of an Easy Problem
implementation
800
x123059
1028A
Find Square
implementation
800
x10660
1027A
Palindromic Twist
implementation
,
strings
1000
x15745
1025A
Doggo Recoloring
implementation
,
sortings
900
x14696
1023B
Pair of Toys
math
1000
x10678
1020B
Badge
brute force
,
dfs and similar
,
graphs
1000
x20438
1020A
New Building for SIS
math
1000
x8911
1017A
The Rank
implementation
800
x20086
1016A
Death Note
greedy
,
implementation
,
math
900
x14731
1015A
Points in Segments
implementation
800
x20681
1013A
Piles With Stones
math
800
x10853
1011A
Stages
greedy
,
implementation
,
sortings
900
x12000
1009A
Game Shopping
implementation
800
x11678
1008B
Turn the Rectangles
greedy
,
sortings
1000
x11290
1008A
Romaji
implementation
,
strings
900
x14805
1006A
Adjacent Replacements
implementation
800
x21318
1005B
Delete from the Left
brute force
,
implementation
,
strings
900
x22657
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