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Codeforces Round 968 (Div. 2)
2 days
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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
#
Name
2000E
Photoshoot for Gorillas
combinatorics
,
data structures
,
greedy
,
math
1400
x10867
1993C
Light Switches
implementation
,
math
1400
x11980
1989C
Two Movies
greedy
,
math
1400
x17074
1986D
Mathematical Problem
brute force
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1400
x14275
1983C
Have Your Cake and Eat It Too
binary search
,
brute force
,
greedy
,
implementation
1400
x11566
1980D
GCD-sequence
greedy
,
implementation
,
math
,
number theory
1400
x13491
1974D
Ingenuity-2
constructive algorithms
,
greedy
,
implementation
1400
x13998
1974C
Beautiful Triple Pairs
combinatorics
,
data structures
1400
x14976
1970C1
Game on Tree (Easy)
games
1400
x3025
1967B1
Reverse Card (Easy Version)
brute force
,
math
,
number theory
1400
x12535
1967A
Permutation Counting
binary search
,
greedy
,
implementation
,
math
,
sortings
1400
x11758
1965A
Everything Nim
games
,
greedy
,
math
,
sortings
1400
x12880
1958B
Clock in the Pool
*special problem
,
math
1400
x819
1955D
Inaccurate Subsequence Search
data structures
,
two pointers
1400
x14699
1951C
Ticket Hoarding
greedy
,
math
,
sortings
1400
x11154
1932D
Card Game
greedy
,
implementation
1400
x11064
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x15194
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x15076
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x14368
1927E
Klever Permutation
constructive algorithms
,
math
,
two pointers
1400
x13569
1923C
Find B
constructive algorithms
,
greedy
1400
x14543
1919C
Grouping Increases
data structures
,
dp
,
greedy
1400
x18283
1918C
XOR-distance
bitmasks
,
greedy
,
implementation
,
math
1400
x13557
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x12036
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x11901
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x10849
1907D
Jumping Through Segments
binary search
,
constructive algorithms
1400
x13526
1905C
Largest Subsequence
greedy
,
strings
1400
x11933
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x12273
1903C
Theofanis' Nightmare
constructive algorithms
,
greedy
1400
x11504
1901C
Add, Divide and Floor
constructive algorithms
,
greedy
,
math
1400
x11657
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x9366
1895C
Torn Lucky Ticket
brute force
,
dp
,
hashing
,
implementation
,
math
1400
x10787
1893A
Anonymous Informant
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x12052
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x10464
1883F
You Are So Beautiful
data structures
1400
x9211
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x12325
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x11499
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7606
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x9365
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x13112
1854A1
Dual (Easy Version)
constructive algorithms
,
math
1400
x13900
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12704
1845C
Strong Password
binary search
,
dp
,
greedy
,
strings
1400
x14012
1844D
Row Major
constructive algorithms
,
greedy
,
math
,
number theory
,
strings
1400
x12168
1840D
Wooden Toy Festival
binary search
,
greedy
,
sortings
1400
x13544
1838C
No Prime Differences
constructive algorithms
,
math
,
number theory
1400
x14215
1837D
Bracket Coloring
constructive algorithms
,
greedy
1400
x14408
1833D
Flipper
brute force
,
constructive algorithms
,
greedy
1400
x13182
1830A
Copil Copac Draws Trees
dfs and similar
,
dp
,
graphs
,
trees
1400
x13284
1824A
LuoTianyi and the Show
greedy
,
implementation
1400
x11133
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x12382
1800E1
Unforgivable Curse (easy version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
strings
1400
x12648
1790E
Vlad and a Pair of Numbers
bitmasks
,
constructive algorithms
1400
x14895
1773E
Easy Assembly
greedy
,
sortings
1400
x4800
1772D
Absolute Sorting
constructive algorithms
,
math
1400
x15653
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x13977
1769B2
Копирование файлов II
*special problem
,
binary search
,
brute force
,
math
1400
x868
1764C
Doremy's City Construction
graphs
,
greedy
1400
x9313
1762C
Binary Strings are Fun
combinatorics
,
math
1400
x9097
1761C
Set Construction
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1400
x9493
1759D
Make It Round
brute force
,
number theory
1400
x13251
1758C
Almost All Multiples
greedy
,
number theory
1400
x13442
1750C
Complementary XOR
constructive algorithms
,
implementation
1400
x9480
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13806
1748B
Diverse Substrings
brute force
,
implementation
,
strings
1400
x14908
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10923
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9801
1733D1
Zero-One (Easy Version)
constructive algorithms
,
greedy
,
math
1400
x13287
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x15719
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x13247
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x13111
1714E
Add Modulo 10
brute force
,
math
,
number theory
1400
x16230
1706C
Qpwoeirut And The City
dp
,
flows
,
greedy
,
implementation
1400
x14737
1705C
Mark and His Unfinished Essay
brute force
,
implementation
1400
x13255
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x16642
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x14243
1696C
Fishingprince Plays With Array
constructive algorithms
,
greedy
,
implementation
,
math
1400
x11510
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x17235
1691C
Sum of Substrings
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1400
x15458
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12234
1682C
LIS or Reverse LIS?
constructive algorithms
,
greedy
,
implementation
,
math
1400
x14588
1679C
Rooks Defenders
data structures
,
implementation
1400
x10182
1676H1
Maximum Crossings (Easy Version)
brute force
1400
x13842
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x9835
1654C
Alice and the Cake
data structures
,
greedy
,
implementation
,
sortings
1400
x13396
1648A
Weird Sum
combinatorics
,
data structures
,
geometry
,
math
,
matrices
,
sortings
1400
x12543
1644C
Increase Subarray Sums
brute force
,
dp
,
greedy
,
implementation
1400
x13648
1634B
Fortune Telling
bitmasks
,
math
1400
x16328
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x15499
1627C
Not Assigning
constructive algorithms
,
dfs and similar
,
number theory
,
trees
1400
x14365
1624D
Palindromes Coloring
binary search
,
greedy
,
sortings
,
strings
1400
x16792
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9663
1606C
Banknotes
greedy
,
number theory
1400
x14038
1605C
Dominant Character
brute force
,
greedy
,
implementation
,
strings
1400
x16773
1600J
Robot Factory
bitmasks
,
dfs and similar
1400
x3861
1579D
Productive Meeting
constructive algorithms
,
graphs
,
greedy
1400
x15824
1573B
Swaps
greedy
,
math
,
sortings
1400
x14434
1559D1
Mocha and Diana (Easy Version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
1400
x13646
1551B2
Wonderful Coloring - 2
binary search
,
constructive algorithms
,
data structures
,
greedy
1400
x15376
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