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Codeforces Round 950 (Div. 3)
13:04:06
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Difficulty:
—
greedy
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
1765B
Broken Keyboard
greedy
800
x8743
1764E
Doremy's Number Line
dp
,
greedy
,
sortings
2400
x1188
1764C
Doremy's City Construction
graphs
,
greedy
1400
x9092
1764A
Doremy's Paint
greedy
800
x16213
1763C
Another Array Problem
brute force
,
constructive algorithms
,
greedy
2000
x6334
1763A
Absolute Maximization
bitmasks
,
constructive algorithms
,
greedy
,
math
800
x15359
1762A
Divide and Conquer
greedy
,
math
,
number theory
800
x18631
1761E
Make It Connected
binary search
,
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
matrices
,
trees
,
two pointers
2400
x1746
1761C
Set Construction
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1400
x9216
1761B
Elimination of a Ring
constructive algorithms
,
greedy
,
implementation
1000
x13062
1760F
Quests
binary search
,
greedy
,
sortings
1500
x11455
1760E
Binary Inversions
data structures
,
greedy
,
math
1100
x19435
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x42189
1759G
Restore the Permutation
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
1900
x4275
1759F
All Possible Digits
binary search
,
data structures
,
greedy
,
math
,
number theory
1800
x3739
1759C
Thermostat
greedy
,
math
,
shortest paths
1100
x17110
1758C
Almost All Multiples
greedy
,
number theory
1400
x13051
1754B
Kevin and Permutation
constructive algorithms
,
greedy
,
math
800
x18603
1754A
Technical Support
greedy
800
x22723
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x310
1753A2
Make Nonzero Sum (hard version)
constructive algorithms
,
dp
,
greedy
1500
x9880
1753A1
Make Nonzero Sum (easy version)
constructive algorithms
,
dp
,
greedy
1300
x14406
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1369
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x16012
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13501
1749B
Death's Blessing
greedy
900
x20458
1749A
Cowardly Rooks
greedy
,
implementation
800
x22085
1748C
Zero-Sum Prefixes
brute force
,
data structures
,
dp
,
greedy
,
implementation
1600
x10570
1747A
Two Groups
constructive algorithms
,
greedy
800
x24488
1746D
Paths on the Tree
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1900
x4448
1746C
Permutation Operations
constructive algorithms
,
greedy
,
implementation
,
math
1300
x12426
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x16817
1746A
Maxmina
constructive algorithms
,
greedy
800
x19520
1744D
Divisibility by 2^n
greedy
,
math
,
sortings
1200
x20482
1744A
Number Replacement
greedy
,
implementation
800
x26516
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7359
1743C
Save the Magazines
constructive algorithms
,
dp
,
greedy
1100
x18722
1743B
Permutation Value
constructive algorithms
,
greedy
800
x21984
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x10018
1742F
Smaller
constructive algorithms
,
greedy
,
strings
1500
x10939
1742E
Scuza
binary search
,
greedy
,
math
1200
x22411
1742D
Coprime
brute force
,
greedy
,
number theory
1100
x22019
1742B
Increasing
greedy
,
implementation
,
sortings
800
x45013
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x17317
1740E
Hanging Hearts
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
1800
x4139
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10639
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13596
1739D
Reset K Edges
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x4916
1739B
Array Recovery
constructive algorithms
,
greedy
,
math
1100
x21627
1738G
Anti-Increasing Addicts
constructive algorithms
,
dp
,
greedy
,
math
2900
x373
1738F
Connectivity Addicts
constructive algorithms
,
dsu
,
graphs
,
greedy
,
interactive
,
shortest paths
,
trees
2400
x1159
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x10652
1738B
Prefix Sum Addicts
constructive algorithms
,
greedy
,
math
,
sortings
1200
x14935
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13365
1737D
Ela and the Wiring Wizard
brute force
,
dp
,
graphs
,
greedy
,
implementation
,
shortest paths
2200
x1817
1737A
Ela Sorting Books
greedy
,
implementation
,
strings
900
x9976
1736E
Swap and Take
dp
,
greedy
2600
x653
1736D
Equal Binary Subsequences
constructive algorithms
,
geometry
,
greedy
,
implementation
,
strings
2200
x2411
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22482
1735E
House Planning
constructive algorithms
,
data structures
,
graph matchings
,
greedy
2400
x1025
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9620
1735B
Tea with Tangerines
greedy
,
math
900
x17791
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x19936
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x6068
1734C
Removing Smallest Multiples
greedy
,
math
1200
x17140
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20829
1733D2
Zero-One (Hard Version)
dp
,
greedy
2000
x4022
1733D1
Zero-One (Easy Version)
constructive algorithms
,
greedy
,
math
1400
x13000
1733A
Consecutive Sum
greedy
,
sortings
800
x20692
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2475
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5617
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14301
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2688
1731B
Kill Demodogs
greedy
,
math
1100
x16970
1731A
Joey Takes Money
greedy
,
math
800
x22164
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x16132
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11996
1730A
Planets
data structures
,
greedy
,
sortings
800
x22589
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x19137
1729B
Decode String
greedy
,
strings
800
x29510
1728F
Fishermen
flows
,
graph matchings
,
greedy
3100
x413
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1663
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x15390
1728B
Best Permutation
constructive algorithms
,
greedy
800
x19945
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24398
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x286
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
1726C
Jatayu's Balanced Bracket Sequence
data structures
,
dsu
,
graphs
,
greedy
1300
x12113
1726A
Mainak and Array
greedy
,
math
900
x20154
1725B
Basketball Together
binary search
,
greedy
,
sortings
1000
x11986
1722G
Even-Odd XOR
bitmasks
,
constructive algorithms
,
greedy
1500
x10537
1722D
Line
greedy
,
sortings
1100
x22420
1721D
Maximum AND
bitmasks
,
dfs and similar
,
divide and conquer
,
greedy
,
sortings
1800
x6360
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x13027
1721A
Image
greedy
,
implementation
800
x26677
1720E
Misha and Paintings
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2700
x740
1720C
Corners
greedy
,
implementation
1200
x16390
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20808
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x290
1718C
Tonya and Burenka-179
data structures
,
greedy
,
math
,
number theory
2400
x1532
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