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Codeforces Round 988 (Div. 3)
04:20:54
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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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Custom test
Problems
#
Name
2036C
Anya and 1100
brute force
,
implementation
1100
x15668
2036B
Startup
greedy
,
sortings
800
x22071
2036A
Quintomania
implementation
800
x29319
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x14149
2035A
Sliding
implementation
,
math
800
x14530
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x22592
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x32366
2032B
Medians
constructive algorithms
,
greedy
,
implementation
,
math
1100
x15089
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x19718
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x15511
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x19831
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x23148
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x7861
2029A
Set
greedy
,
math
800
x10537
2028A
Alice's Adventures in ''Chess''
brute force
,
implementation
,
math
900
x12959
2027B
Stalin Sort
brute force
,
greedy
1100
x13304
2027A
Rectangle Arrangement
geometry
,
implementation
,
math
800
x18141
2026A
Perpendicular Segments
constructive algorithms
,
geometry
,
greedy
,
math
900
x15633
2025B
Binomial Coefficients, Kind Of
combinatorics
,
dp
,
math
1100
x16303
2025A
Two Screens
binary search
,
greedy
,
strings
,
two pointers
800
x23229
2024B
Buying Lemonade
binary search
,
constructive algorithms
,
sortings
1100
x12898
2024A
Profitable Interest Rate
greedy
,
math
800
x18567
2022A
Bus to Pénjamo
constructive algorithms
,
greedy
,
implementation
,
math
800
x13572
2021B
Maximize Mex
brute force
,
greedy
,
math
,
number theory
1200
x14155
2021A
Meaning Mean
data structures
,
greedy
,
math
,
sortings
800
x18464
2020B
Brightness Begins
binary search
,
math
1200
x16222
2020A
Find Minimum Operations
bitmasks
,
brute force
,
greedy
,
math
,
number theory
800
x21732
2019B
All Pairs Segments
implementation
,
math
1200
x13730
2019A
Max Plus Size
brute force
,
dp
,
greedy
800
x22712
2014C
Robin Hood in Town
binary search
,
greedy
,
math
1100
x21372
2014B
Robin Hood and the Major Oak
math
800
x28060
2014A
Robin Helps
greedy
,
implementation
800
x36713
2013B
Battle for Survive
constructive algorithms
,
greedy
,
math
900
x22841
2013A
Zhan's Blender
constructive algorithms
,
math
800
x26967
2010B
Three Brothers
brute force
,
implementation
,
math
800
x19672
2010A
Alternating Sum of Numbers
brute force
,
implementation
,
math
800
x16654
2009C
The Legend of Freya the Frog
implementation
,
math
1100
x25621
2009B
osu!mania
brute force
,
implementation
800
x41371
2009A
Minimize!
brute force
,
math
800
x50587
2008D
Sakurako's Hobby
dp
,
dsu
,
graphs
,
math
1100
x19027
2008C
Longest Good Array
binary search
,
brute force
,
math
800
x30139
2008B
Square or Not
brute force
,
math
,
strings
800
x28363
2008A
Sakurako's Exam
brute force
,
constructive algorithms
,
greedy
,
math
800
x35025
2007B
Index and Maximum Value
data structures
,
greedy
900
x21095
2007A
Dora's Set
greedy
,
math
,
number theory
800
x22573
2005B2
The Strict Teacher (Hard Version)
binary search
,
greedy
,
math
,
sortings
1200
x17149
2005B1
The Strict Teacher (Easy Version)
greedy
,
math
,
sortings
1000
x19812
2005A
Simple Palindrome
combinatorics
,
constructive algorithms
,
greedy
,
math
900
x21564
2004C
Splitting Items
games
,
greedy
,
sortings
1100
x23240
2004B
Game with Doors
brute force
,
greedy
1000
x25959
2004A
Closest Point
implementation
,
math
800
x30198
2003C
Turtle and Good Pairs
constructive algorithms
,
greedy
,
sortings
,
strings
1200
x18054
2003B
Turtle and Piggy Are Playing a Game 2
games
,
greedy
,
sortings
800
x25062
2003A
Turtle and Good Strings
greedy
,
strings
800
x28842
2002C
Black Circles
brute force
,
geometry
,
greedy
,
math
1200
x15013
2002B
Removals Game
constructive algorithms
,
games
1000
x18758
2002A
Distanced Coloring
constructive algorithms
,
implementation
,
math
800
x19363
2001B
Generate Permutation
constructive algorithms
800
x23967
2001A
Make All Equal
greedy
,
implementation
800
x29475
2000D
Right Left Wrong
greedy
,
implementation
,
two pointers
1200
x22876
2000C
Numeric String Template
data structures
,
strings
1000
x25307
2000B
Seating in a Bus
two pointers
800
x33691
2000A
Primary Task
implementation
,
math
,
strings
800
x37213
1999D
Slavic's Exam
greedy
,
implementation
,
strings
1100
x26903
1999C
Showering
greedy
,
implementation
800
x34969
1999B
Card Game
brute force
,
constructive algorithms
,
implementation
1000
x32270
1999A
A+B Again?
implementation
,
math
800
x55631
1998B
Minimize Equal Sum Subarrays
constructive algorithms
,
math
,
number theory
1000
x23693
1998A
Find K Distinct Points with Fixed Center
constructive algorithms
,
implementation
,
math
800
x23884
1997C
Even Positions
constructive algorithms
,
data structures
,
greedy
1100
x21968
1997B
Make Three Regions
constructive algorithms
,
two pointers
1100
x20601
1997A
Strong Password
brute force
,
implementation
,
strings
800
x29169
1996C
Sort
dp
,
greedy
,
sortings
,
strings
1200
x22867
1996B
Scale
greedy
,
implementation
800
x32514
1996A
Legs
binary search
,
math
,
ternary search
800
x43100
1995B1
Bouquet (Easy Version)
binary search
,
brute force
,
greedy
,
sortings
,
two pointers
1100
x17954
1995A
Diagonals
brute force
,
greedy
,
implementation
,
math
800
x24196
1994B
Fun Game
bitmasks
,
constructive algorithms
,
greedy
,
math
1100
x16527
1994A
Diverse Game
constructive algorithms
,
greedy
,
implementation
800
x20196
1993B
Parity and Sum
constructive algorithms
,
greedy
1100
x22712
1993A
Question Marks
greedy
,
implementation
800
x29366
1992D
Test of Love
dp
,
greedy
,
implementation
1200
x20402
1992C
Gorilla and Permutation
constructive algorithms
,
math
900
x29075
1992B
Angry Monk
greedy
,
math
,
sortings
800
x34270
1992A
Only Pluses
brute force
,
constructive algorithms
,
greedy
,
math
,
sortings
800
x41249
1991B
AND Reconstruction
bitmasks
,
constructive algorithms
,
greedy
1100
x16339
1991A
Maximize the Last Element
greedy
,
implementation
800
x21805
1990B
Array Craft
constructive algorithms
,
greedy
1200
x16501
1990A
Submission Bait
brute force
,
games
,
greedy
,
sortings
900
x22669
1989B
Substring and Subsequence
brute force
,
greedy
,
strings
1200
x20163
1989A
Catch the Coin
implementation
800
x26367
1988B
Make Majority
greedy
,
implementation
900
x22751
1988A
Split the Multiset
brute force
,
greedy
,
implementation
,
math
900
x23225
1987C
Basil's Garden
dp
,
greedy
1200
x17365
1987B
K-Sort
greedy
1000
x20461
1987A
Upload More RAM
greedy
,
math
800
x25347
1986C
Update Queries
data structures
,
greedy
,
sortings
1100
x22843
1986B
Matrix Stabilization
brute force
,
data structures
,
greedy
,
sortings
1000
x26604
1986A
X Axis
brute force
,
geometry
,
math
,
sortings
800
x40489
1985E
Secret Box
brute force
,
combinatorics
,
math
1200
x19932
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