Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
Register now »
*has extra registration
→ Filter Problems
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
Add tag
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1754B
Kevin and Permutation
constructive algorithms
,
greedy
,
math
800
x18546
1754A
Technical Support
greedy
800
x22669
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x309
1753A2
Make Nonzero Sum (hard version)
constructive algorithms
,
dp
,
greedy
1500
x9826
1753A1
Make Nonzero Sum (easy version)
constructive algorithms
,
dp
,
greedy
1300
x14343
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1367
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x15970
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13441
1749B
Death's Blessing
greedy
900
x20401
1749A
Cowardly Rooks
greedy
,
implementation
800
x22030
1748C
Zero-Sum Prefixes
brute force
,
data structures
,
dp
,
greedy
,
implementation
1600
x10517
1747A
Two Groups
constructive algorithms
,
greedy
800
x24415
1746D
Paths on the Tree
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1900
x4432
1746C
Permutation Operations
constructive algorithms
,
greedy
,
implementation
,
math
1300
x12384
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x16778
1746A
Maxmina
constructive algorithms
,
greedy
800
x19476
1744D
Divisibility by 2^n
greedy
,
math
,
sortings
1200
x20367
1744A
Number Replacement
greedy
,
implementation
800
x26462
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7328
1743C
Save the Magazines
constructive algorithms
,
dp
,
greedy
1100
x18677
1743B
Permutation Value
constructive algorithms
,
greedy
800
x21959
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x9935
1742F
Smaller
constructive algorithms
,
greedy
,
strings
1500
x10876
1742E
Scuza
binary search
,
greedy
,
math
1200
x22176
1742D
Coprime
brute force
,
greedy
,
number theory
1100
x21857
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44773
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x17246
1740E
Hanging Hearts
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
1800
x4119
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x10599
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13555
1739D
Reset K Edges
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x4895
1739B
Array Recovery
constructive algorithms
,
greedy
,
math
1100
x21501
1738G
Anti-Increasing Addicts
constructive algorithms
,
dp
,
greedy
,
math
2900
x371
1738F
Connectivity Addicts
constructive algorithms
,
dsu
,
graphs
,
greedy
,
interactive
,
shortest paths
,
trees
2400
x1157
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x10611
1738B
Prefix Sum Addicts
constructive algorithms
,
greedy
,
math
,
sortings
1200
x14871
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13351
1737D
Ela and the Wiring Wizard
brute force
,
dp
,
graphs
,
greedy
,
implementation
,
shortest paths
2200
x1813
1737A
Ela Sorting Books
greedy
,
implementation
,
strings
900
x9962
1736E
Swap and Take
dp
,
greedy
2600
x646
1736D
Equal Binary Subsequences
constructive algorithms
,
geometry
,
greedy
,
implementation
,
strings
2200
x2405
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22463
1735E
House Planning
constructive algorithms
,
data structures
,
graph matchings
,
greedy
2400
x1023
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9601
1735B
Tea with Tangerines
greedy
,
math
900
x17748
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x19909
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x6047
1734C
Removing Smallest Multiples
greedy
,
math
1200
x17007
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20790
1733D2
Zero-One (Hard Version)
dp
,
greedy
2000
x4003
1733D1
Zero-One (Easy Version)
constructive algorithms
,
greedy
,
math
1400
x12955
1733A
Consecutive Sum
greedy
,
sortings
800
x20680
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2463
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5585
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14078
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2674
1731B
Kill Demodogs
greedy
,
math
1100
x16847
1731A
Joey Takes Money
greedy
,
math
800
x22147
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x16089
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11908
1730A
Planets
data structures
,
greedy
,
sortings
800
x22547
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x18962
1729B
Decode String
greedy
,
strings
800
x29456
1728F
Fishermen
flows
,
graph matchings
,
greedy
3100
x410
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1655
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x15315
1728B
Best Permutation
constructive algorithms
,
greedy
800
x19928
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24381
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x283
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
x12093
1726A
Mainak and Array
greedy
,
math
900
x19980
1725B
Basketball Together
binary search
,
greedy
,
sortings
1000
x11837
1722G
Even-Odd XOR
bitmasks
,
constructive algorithms
,
greedy
1500
x10448
1722D
Line
greedy
,
sortings
1100
x22349
1721D
Maximum AND
bitmasks
,
dfs and similar
,
divide and conquer
,
greedy
,
sortings
1800
x6337
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x13004
1721A
Image
greedy
,
implementation
800
x26643
1720E
Misha and Paintings
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2700
x739
1720C
Corners
greedy
,
implementation
1200
x16354
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20782
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x288
1718C
Tonya and Burenka-179
data structures
,
greedy
,
math
,
number theory
2400
x1522
1718B
Fibonacci Strings
greedy
,
implementation
,
math
,
number theory
2000
x2889
1718A2
Burenka and Traditions (hard version)
data structures
,
dp
,
greedy
1900
x5023
1718A1
Burenka and Traditions (easy version)
dp
,
greedy
1800
x5518
1717D
Madoka and The Corruption Scheme
combinatorics
,
constructive algorithms
,
greedy
,
math
1900
x4266
1717C
Madoka and Formal Statement
greedy
1300
x14305
1716C
Robot in a Hallway
data structures
,
dp
,
greedy
,
implementation
,
ternary search
2000
x4021
1716A
2-3 Moves
greedy
,
math
800
x31524
1715E
Long Way Home
data structures
,
divide and conquer
,
dp
,
geometry
,
graphs
,
greedy
,
shortest paths
2400
x1615
1715D
2+ doors
2-sat
,
bitmasks
,
graphs
,
greedy
1900
x4937
1715B
Beautiful Array
constructive algorithms
,
greedy
,
math
1000
x20235
1715A
Crossmarket
constructive algorithms
,
greedy
,
math
800
x23223
1714D
Color with Occurrences
brute force
,
data structures
,
dp
,
greedy
,
strings
1600
x8754
1714C
Minimum Varied Number
greedy
800
x30083
1714B
Remove Prefix
data structures
,
greedy
,
implementation
800
x29425
1713E
Cross Swapping
2-sat
,
data structures
,
dsu
,
greedy
,
matrices
2400
x1521
1713D
Tournament Countdown
constructive algorithms
,
greedy
,
interactive
,
number theory
,
probabilities
1800
x5480
1713A
Traveling Salesman Problem
geometry
,
greedy
,
implementation
800
x21680
←
1
2
...
4
5
6
7
8
...
27
28
→
User lists
Name