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Codeforces Round 987 (Div. 2)
19:38:25
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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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Status
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Custom test
Problems
#
Name
2036B
Startup
greedy
,
sortings
800
x21447
2036A
Quintomania
implementation
800
x28466
2035B
Everyone Loves Tres
constructive algorithms
,
greedy
,
math
,
number theory
900
x13949
2035A
Sliding
implementation
,
math
800
x14384
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x22450
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x32097
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x19452
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x19743
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x23064
2029A
Set
greedy
,
math
800
x10268
2027A
Rectangle Arrangement
geometry
,
implementation
,
math
800
x18020
2026A
Perpendicular Segments
constructive algorithms
,
geometry
,
greedy
,
math
900
x15522
2025A
Two Screens
binary search
,
greedy
,
strings
,
two pointers
800
x23115
2024A
Profitable Interest Rate
greedy
,
math
800
x18474
2022A
Bus to Pénjamo
constructive algorithms
,
greedy
,
implementation
,
math
800
x13510
2021A
Meaning Mean
data structures
,
greedy
,
math
,
sortings
800
x18425
2020A
Find Minimum Operations
bitmasks
,
brute force
,
greedy
,
math
,
number theory
800
x21683
2019A
Max Plus Size
brute force
,
dp
,
greedy
800
x22660
2014B
Robin Hood and the Major Oak
math
800
x27984
2014A
Robin Helps
greedy
,
implementation
800
x36588
2013B
Battle for Survive
constructive algorithms
,
greedy
,
math
900
x22774
2013A
Zhan's Blender
constructive algorithms
,
math
800
x26899
2010B
Three Brothers
brute force
,
implementation
,
math
800
x19591
2010A
Alternating Sum of Numbers
brute force
,
implementation
,
math
800
x16589
2009B
osu!mania
brute force
,
implementation
800
x41161
2009A
Minimize!
brute force
,
math
800
x50223
2008C
Longest Good Array
binary search
,
brute force
,
math
800
x30040
2008B
Square or Not
brute force
,
math
,
strings
800
x28323
2008A
Sakurako's Exam
brute force
,
constructive algorithms
,
greedy
,
math
800
x34813
2007B
Index and Maximum Value
data structures
,
greedy
900
x21056
2007A
Dora's Set
greedy
,
math
,
number theory
800
x22546
2005B1
The Strict Teacher (Easy Version)
greedy
,
math
,
sortings
1000
x19767
2005A
Simple Palindrome
combinatorics
,
constructive algorithms
,
greedy
,
math
900
x21522
2004B
Game with Doors
brute force
,
greedy
1000
x25902
2004A
Closest Point
implementation
,
math
800
x30179
2003B
Turtle and Piggy Are Playing a Game 2
games
,
greedy
,
sortings
800
x25037
2003A
Turtle and Good Strings
greedy
,
strings
800
x28804
2002B
Removals Game
constructive algorithms
,
games
1000
x18709
2002A
Distanced Coloring
constructive algorithms
,
implementation
,
math
800
x19340
2001B
Generate Permutation
constructive algorithms
800
x23945
2001A
Make All Equal
greedy
,
implementation
800
x29442
2000C
Numeric String Template
data structures
,
strings
1000
x25242
2000B
Seating in a Bus
two pointers
800
x33651
2000A
Primary Task
implementation
,
math
,
strings
800
x37140
1999C
Showering
greedy
,
implementation
800
x34903
1999B
Card Game
brute force
,
constructive algorithms
,
implementation
1000
x32206
1999A
A+B Again?
implementation
,
math
800
x54646
1998B
Minimize Equal Sum Subarrays
constructive algorithms
,
math
,
number theory
1000
x23657
1998A
Find K Distinct Points with Fixed Center
constructive algorithms
,
implementation
,
math
800
x23868
1997A
Strong Password
brute force
,
implementation
,
strings
800
x28937
1996B
Scale
greedy
,
implementation
800
x32470
1996A
Legs
binary search
,
math
,
ternary search
800
x42998
1995A
Diagonals
brute force
,
greedy
,
implementation
,
math
800
x24176
1994A
Diverse Game
constructive algorithms
,
greedy
,
implementation
800
x20183
1993A
Question Marks
greedy
,
implementation
800
x29320
1992C
Gorilla and Permutation
constructive algorithms
,
math
900
x29036
1992B
Angry Monk
greedy
,
math
,
sortings
800
x34227
1992A
Only Pluses
brute force
,
constructive algorithms
,
greedy
,
math
,
sortings
800
x41141
1991A
Maximize the Last Element
greedy
,
implementation
800
x21777
1990A
Submission Bait
brute force
,
games
,
greedy
,
sortings
900
x22632
1989A
Catch the Coin
implementation
800
x26329
1988B
Make Majority
greedy
,
implementation
900
x22729
1988A
Split the Multiset
brute force
,
greedy
,
implementation
,
math
900
x23193
1987B
K-Sort
greedy
1000
x20439
1987A
Upload More RAM
greedy
,
math
800
x25329
1986B
Matrix Stabilization
brute force
,
data structures
,
greedy
,
sortings
1000
x26581
1986A
X Axis
brute force
,
geometry
,
math
,
sortings
800
x40429
1985D
Manhattan Circle
implementation
,
math
900
x34534
1985C
Good Prefixes
greedy
1000
x32333
1985B
Maximum Multiple Sum
brute force
,
math
,
number theory
800
x46257
1985A
Creating Words
implementation
,
strings
800
x53738
1984A
Strange Splitting
constructive algorithms
800
x21146
1983A
Array Divisibility
constructive algorithms
,
math
800
x25634
1982A
Soccer
greedy
,
implementation
,
math
,
sortings
800
x25115
1981A
Turtle and Piggy Are Playing a Game
brute force
,
greedy
,
math
800
x22285
1980B
Choosing Cubes
sortings
,
sortings
800
x34675
1980A
Problem Generator
math
800
x40624
1979B
XOR Sequences
bitmasks
,
greedy
1000
x22596
1979A
Guess the Maximum
brute force
,
greedy
,
implementation
800
x29031
1978B
New Bakery
binary search
,
greedy
,
math
,
ternary search
800
x22355
1978A
Alice and Books
constructive algorithms
,
greedy
,
sortings
800
x25688
1977A
Little Nikita
math
800
x32180
1976A
Verify Password
implementation
,
sortings
,
strings
800
x28574
1975B
378QAQ and Mocha's Array
brute force
,
greedy
,
math
,
sortings
1000
x17857
1975A
Bazoka and Mocha's Array
brute force
,
greedy
,
implementation
,
sortings
800
x18496
1974B
Symmetric Encoding
implementation
,
sortings
,
strings
800
x30245
1974A
Phone Desktop
greedy
,
math
800
x33238
1973A
Chess For Three
brute force
,
dp
,
implementation
,
math
900
x24562
1972B
Coin Games
games
900
x21609
1972A
Contest Proposal
brute force
,
greedy
,
two pointers
800
x22949
1971C
Clock and Strings
implementation
900
x33066
1971B
Different String
implementation
,
strings
800
x36964
1971A
My First Sorting Problem
implementation
,
sortings
800
x45223
1970A1
Balanced Shuffle (Easy)
implementation
,
sortings
1000
x4794
1969B
Shifts and Sorting
constructive algorithms
,
greedy
1000
x19101
1969A
Two Friends
constructive algorithms
,
implementation
,
math
800
x19963
1968C
Assembly via Remainders
constructive algorithms
,
number theory
1000
x25062
1968B
Prefiquence
greedy
,
two pointers
800
x27940
1968A
Maximize?
brute force
,
math
,
number theory
800
x34627
1966A
Card Exchange
constructive algorithms
,
games
,
greedy
800
x17911
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