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Codeforces Round 950 (Div. 3)
34:33:51
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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
1744A
Number Replacement
greedy
,
implementation
800
x26508
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x247
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1434
1743E
FTL
binary search
,
dp
2400
x1492
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7357
1743C
Save the Magazines
constructive algorithms
,
dp
,
greedy
1100
x18721
1743B
Permutation Value
constructive algorithms
,
greedy
800
x21982
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x26230
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x10013
1742F
Smaller
constructive algorithms
,
greedy
,
strings
1500
x10934
1742E
Scuza
binary search
,
greedy
,
math
1200
x22388
1742D
Coprime
brute force
,
greedy
,
number theory
1100
x22008
1742C
Stripes
implementation
900
x31356
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44994
1742A
Sum
implementation
800
x65750
1741G
Kirill and Company
bitmasks
,
brute force
,
dfs and similar
,
dp
,
flows
,
graphs
,
shortest paths
2200
x1437
1741F
Multi-Colored Segments
binary search
,
data structures
,
math
,
sortings
2000
x2251
1741E
Sending a Sequence Over the Network
dp
1600
x11013
1741D
Masha and a Beautiful Tree
dfs and similar
,
divide and conquer
,
graphs
,
sortings
,
trees
1300
x14590
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x17313
1741B
Funny Permutation
constructive algorithms
,
math
800
x24897
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x30005
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x106
1740H
MEX Tree Manipulation
data structures
,
trees
3300
x204
1740G
Dangerous Laser Power
constructive algorithms
,
dsu
,
sortings
3100
x180
1740F
Conditional Mix
combinatorics
,
dp
,
math
2600
x766
1740E
Hanging Hearts
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
1800
x4138
1740D
Knowledge Cards
constructive algorithms
,
data structures
1500
x7759
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10636
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13594
1740A
Factorise N+M
constructive algorithms
,
number theory
800
x19692
1739F
Keyboard Design
bitmasks
,
data structures
,
dp
,
string suffix structures
,
strings
2600
x516
1739E
Cleaning Robot
bitmasks
,
dp
2400
x1180
1739D
Reset K Edges
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x4909
1739C
Card Game
combinatorics
,
constructive algorithms
,
dp
,
games
1500
x8778
1739B
Array Recovery
constructive algorithms
,
greedy
,
math
1100
x21621
1739A
Immobile Knight
implementation
800
x22359
1738H
Palindrome Addicts
data structures
,
strings
3300
x230
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
1738E
Balance Addicts
combinatorics
,
dp
,
math
,
two pointers
2300
x1471
1738D
Permutation Addicts
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
1900
x3343
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x10648
1738B
Prefix Sum Addicts
constructive algorithms
,
greedy
,
math
,
sortings
1200
x14931
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13363
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x109
1737F
Ela and Prime GCD
constructive algorithms
,
math
,
number theory
3300
x119
1737E
Ela Goes Hiking
combinatorics
,
dp
,
math
,
probabilities
2500
x895
1737D
Ela and the Wiring Wizard
brute force
,
dp
,
graphs
,
greedy
,
implementation
,
shortest paths
2200
x1817
1737C
Ela and Crickets
constructive algorithms
,
games
,
implementation
,
math
1500
x5589
1737B
Ela's Fitness and the Luxury Number
binary search
,
implementation
,
math
1300
x9222
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
x2410
1736C2
Good Subarrays (Hard Version)
binary search
,
data structures
,
dp
,
two pointers
2400
x1246
1736C1
Good Subarrays (Easy Version)
binary search
,
data structures
,
schedules
,
two pointers
1300
x14599
1736B
Playing with GCD
math
,
number theory
1200
x17363
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22480
1735F
Pebbles and Beads
data structures
,
geometry
2900
x219
1735E
House Planning
constructive algorithms
,
data structures
,
graph matchings
,
greedy
2400
x1025
1735D
Meta-set
brute force
,
combinatorics
,
data structures
,
hashing
,
math
1700
x5328
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9619
1735B
Tea with Tangerines
greedy
,
math
900
x17786
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x19936
1734F
Zeros and Ones
bitmasks
,
divide and conquer
,
dp
,
math
2500
x775
1734E
Rectangular Congruence
constructive algorithms
,
number theory
2100
x2809
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x6066
1734C
Removing Smallest Multiples
greedy
,
math
1200
x17124
1734B
Bright, Nice, Brilliant
constructive algorithms
800
x15607
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20827
1733E
Conveyor
constructive algorithms
,
dp
,
math
2700
x1100
1733D2
Zero-One (Hard Version)
dp
,
greedy
2000
x4020
1733D1
Zero-One (Easy Version)
constructive algorithms
,
greedy
,
math
1400
x12995
1733C
Parity Shuffle Sorting
constructive algorithms
,
sortings
1300
x15176
1733B
Rule of League
constructive algorithms
,
math
900
x19347
1733A
Consecutive Sum
greedy
,
sortings
800
x20692
1732E
Location
data structures
,
dp
,
math
,
number theory
2800
x415
1732D2
Balance (Hard version)
brute force
,
data structures
,
number theory
2400
x1371
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8331
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2474
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5616
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14284
1732A
Bestie
brute force
,
combinatorics
,
constructive algorithms
,
implementation
,
math
,
number theory
1000
x14501
1731F
Function Sum
brute force
,
combinatorics
,
dp
,
fft
,
math
2500
x663
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2685
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6802
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x9048
1731B
Kill Demodogs
greedy
,
math
1100
x16958
1731A
Joey Takes Money
greedy
,
math
800
x22162
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x413
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x617
1730D
Prefixes and Suffixes
constructive algorithms
,
strings
,
two pointers
2200
x2605
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x16130
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11992
1730A
Planets
data structures
,
greedy
,
sortings
800
x22585
1729G
Cut Substrings
combinatorics
,
dp
,
hashing
,
strings
,
two pointers
2100
x2073
1729F
Kirei and the Linear Function
hashing
,
math
1900
x4013
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6769
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x19115
1729C
Jumping on Tiles
constructive algorithms
,
strings
1100
x19519
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