Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
ICPC Challenge
→ Pay attention
Contest is running
Kotlin Heroes: Practice 9 (release 2)
11:48:24
Register now »
Before contest
Kotlin Heroes: Episode 9 (Unrated, T-Shirts + Prizes!)
11:58:25
Register now »
→ Filter Problems
Difficulty:
—
two pointers
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
1904D2
Set To Max (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
x1681
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
x4688
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
x6524
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x104
1899G
Unusual Entertainment
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
sortings
,
trees
,
two pointers
1900
x2286
1899C
Yarik and Array
dp
,
greedy
,
two pointers
1100
x13682
1898E
Sofia and Strings
data structures
,
greedy
,
sortings
,
strings
,
two pointers
2200
x1635
1896D
Ones and Twos
binary search
,
data structures
,
divide and conquer
,
math
,
two pointers
1700
x3882
1896B
AB Flipping
greedy
,
strings
,
two pointers
900
x10089
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1246
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x6754
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x8912
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x661
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1285
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1165
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x9780
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x4038
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x6991
1876D
Lexichromatography
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2500
x715
1873F
Money Trees
binary search
,
greedy
,
math
,
two pointers
1300
x11558
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x28429
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x9646
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x611
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2419
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2478
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x3706
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2603
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x26180
1849E
Max to the Right of Min
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
two pointers
2300
x1335
1849D
Array Painting
constructive algorithms
,
greedy
,
two pointers
1700
x6996
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x17738
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x6672
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x9765
1843B
Long Long
greedy
,
math
,
two pointers
800
x26314
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x30902
1841F
Monocarp and a Strategic Game
geometry
,
sortings
,
two pointers
2700
x432
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x3768
1840C
Ski Resort
combinatorics
,
math
,
two pointers
1000
x21592
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x30548
1835B
Lottery
binary search
,
brute force
,
greedy
,
math
,
two pointers
2500
x809
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x5911
1832B
Maximum Sum
brute force
,
sortings
,
two pointers
1100
x17456
1827B1
Range Sorting (Easy Version)
binary search
,
dp
,
dsu
,
greedy
,
trees
,
two pointers
2000
x3431
1827A
Counting Orders
combinatorics
,
math
,
sortings
,
two pointers
1100
x15934
1820B
JoJo's Incredible Adventures
math
,
strings
,
two pointers
1100
x12010
1819D
Misha and Apples
brute force
,
data structures
,
dp
,
two pointers
2800
x545
1819B
The Butcher
geometry
,
greedy
,
implementation
,
sortings
,
two pointers
1900
x3191
1814D
Balancing Weapons
binary search
,
brute force
,
data structures
,
math
,
two pointers
2500
x768
1811G2
Vlad and the Nice Paths (hard version)
binary search
,
combinatorics
,
data structures
,
dp
,
math
,
two pointers
2200
x1454
1808D
Petya, Petya, Petr, and Palindromes
binary search
,
brute force
,
data structures
,
two pointers
2100
x1970
1805F2
Survival of the Weakest (hard version)
greedy
,
math
,
sortings
,
two pointers
3100
x290
1805E
There Should Be a Lot of Maximums
brute force
,
data structures
,
dfs and similar
,
dp
,
trees
,
two pointers
2300
x1389
1797E
Li Hua and Array
brute force
,
data structures
,
dsu
,
math
,
number theory
,
two pointers
2300
x1073
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x3557
1794C
Scoring Subsequences
binary search
,
greedy
,
math
,
two pointers
1300
x11309
1793E
Velepin and Marketing
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2600
x851
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x5361
1793C
Dora and Search
constructive algorithms
,
data structures
,
two pointers
1200
x16055
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x11987
1791C
Prepend and Append
implementation
,
two pointers
800
x36164
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x15186
1788D
Moving Dots
binary search
,
brute force
,
combinatorics
,
math
,
two pointers
2000
x3497
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x140
1781E
Rectangle Shrinking
binary search
,
brute force
,
data structures
,
greedy
,
implementation
,
two pointers
2300
x1234
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x6984
1776H
Beppa and SwerChat
two pointers
1300
x5456
1774D
Same Count One
brute force
,
constructive algorithms
,
greedy
,
implementation
,
two pointers
1600
x6880
1772G
Gaining Rating
binary search
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
2200
x1205
1771E
Hossam and a Letter
brute force
,
dp
,
implementation
,
two pointers
2500
x623
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x11499
1766E
Decomposition
binary search
,
brute force
,
data structures
,
divide and conquer
,
dp
,
two pointers
2300
x1078
1765D
Watch the Videos
binary search
,
constructive algorithms
,
two pointers
1700
x3621
1761E
Make It Connected
binary search
,
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
matrices
,
trees
,
two pointers
2400
x1589
1760D
Challenging Valleys
implementation
,
two pointers
1000
x20799
1758D
Range = √Sum
binary search
,
brute force
,
constructive algorithms
,
math
,
two pointers
1800
x6387
1753F
Minecraft Series
brute force
,
two pointers
3500
x171
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x16277
1744F
MEX vs MED
math
,
two pointers
2000
x2602
1744C
Traffic Light
binary search
,
implementation
,
two pointers
1000
x21508
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x16469
1738E
Balance Addicts
combinatorics
,
dp
,
math
,
two pointers
2300
x1392
1736C2
Good Subarrays (Hard Version)
binary search
,
data structures
,
dp
,
two pointers
2400
x1179
1736C1
Good Subarrays (Easy Version)
binary search
,
data structures
,
schedules
,
two pointers
1300
x13594
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x5668
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2300
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5135
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6247
1730D
Prefixes and Suffixes
constructive algorithms
,
strings
,
two pointers
2200
x2491
1729G
Cut Substrings
combinatorics
,
dp
,
hashing
,
strings
,
two pointers
2100
x1953
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x17081
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x366
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6474
1725C
Circular Mirror
binary search
,
combinatorics
,
geometry
,
math
,
two pointers
2000
x1454
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x12321
1720D1
Xor-Subsequence (easy version)
bitmasks
,
brute force
,
dp
,
strings
,
trees
,
two pointers
1800
x5428
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12247
1712E2
LCM Sum (hard version)
brute force
,
data structures
,
math
,
number theory
,
two pointers
2500
x1123
1712E1
LCM Sum (easy version)
binary search
,
brute force
,
combinatorics
,
math
,
number theory
,
two pointers
2300
x1947
1706D2
Chopping Carrots (Hard Version)
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2400
x1596
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5232
←
1
2
3
4
5
→
User lists
Name