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!)
3 days
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
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
2038L
Bridge Renovation
brute force
,
dp
,
greedy
,
math
1400
x2146
2038C
DIY
data structures
,
geometry
,
greedy
,
sortings
1400
x2002
2038A
Bonus Project
games
,
greedy
1400
x1779
2035C
Alya and Permutation
bitmasks
,
constructive algorithms
,
math
1400
x7849
2033E
Sakurako, Kosuke, and the Permutation
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
1400
x9751
2033C
Sakurako's Field Trip
dp
,
greedy
,
two pointers
1400
x12448
2032C
Trinity
binary search
,
math
,
sortings
,
two pointers
1400
x10856
2028B
Alice's Adventures in Permuting
binary search
,
implementation
,
math
1400
x8116
2020C
Bitwise Balancing
bitmasks
,
hashing
,
implementation
,
math
,
schedules
,
ternary search
1400
x14339
2014D
Robert Hood and Mrs Hood
brute force
,
data structures
,
greedy
,
sortings
1400
x12017
2013C
Password Cracking
constructive algorithms
,
interactive
,
strings
1400
x11580
2010C1
Message Transmission Error (easy version)
brute force
,
strings
1400
x6960
2009E
Klee's SUPER DUPER LARGE Array!!!
binary search
,
math
,
ternary search
1400
x13139
2009D
Satyam and Counting
geometry
,
math
1400
x14257
2008F
Sakurako's Box
combinatorics
,
math
,
number theory
1400
x12463
2000E
Photoshoot for Gorillas
combinatorics
,
data structures
,
greedy
,
math
1400
x13251
1993C
Light Switches
implementation
,
math
1400
x13615
1989C
Two Movies
greedy
,
math
1400
x18526
1986D
Mathematical Problem
brute force
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1400
x15232
1983C
Have Your Cake and Eat It Too
binary search
,
brute force
,
greedy
,
implementation
1400
x12585
1980D
GCD-sequence
greedy
,
implementation
,
math
,
number theory
1400
x14339
1974D
Ingenuity-2
constructive algorithms
,
greedy
,
implementation
1400
x14854
1974C
Beautiful Triple Pairs
combinatorics
,
data structures
1400
x15822
1970C1
Game on Tree (Easy)
games
1400
x3498
1967B1
Reverse Card (Easy Version)
brute force
,
math
,
number theory
1400
x13351
1967A
Permutation Counting
binary search
,
greedy
,
implementation
,
math
,
sortings
1400
x12540
1965A
Everything Nim
games
,
greedy
,
math
,
sortings
1400
x13805
1958B
Clock in the Pool
*special problem
,
math
1400
x904
1955D
Inaccurate Subsequence Search
data structures
,
two pointers
1400
x15547
1951C
Ticket Hoarding
greedy
,
math
,
sortings
1400
x11730
1932D
Card Game
greedy
,
implementation
1400
x11565
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x15907
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x16166
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x15085
1927E
Klever Permutation
constructive algorithms
,
math
,
two pointers
1400
x14190
1923C
Find B
constructive algorithms
,
greedy
1400
x15306
1919C
Grouping Increases
data structures
,
dp
,
greedy
1400
x19369
1918C
XOR-distance
bitmasks
,
greedy
,
implementation
,
math
1400
x14191
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x12580
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x12378
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x11332
1907D
Jumping Through Segments
binary search
,
constructive algorithms
1400
x14571
1905C
Largest Subsequence
greedy
,
strings
1400
x12453
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x13593
1903C
Theofanis' Nightmare
constructive algorithms
,
greedy
1400
x12106
1901C
Add, Divide and Floor
constructive algorithms
,
greedy
,
math
1400
x12135
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x9760
1895C
Torn Lucky Ticket
brute force
,
dp
,
hashing
,
implementation
,
math
1400
x11364
1893A
Anonymous Informant
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x12535
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x11346
1883F
You Are So Beautiful
data structures
1400
x9694
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x13159
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x11882
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7835
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x9592
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x13490
1854A1
Dual (Easy Version)
constructive algorithms
,
math
1400
x14277
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x13005
1845C
Strong Password
binary search
,
dp
,
greedy
,
strings
1400
x14451
1844D
Row Major
constructive algorithms
,
greedy
,
math
,
number theory
,
strings
1400
x12401
1840D
Wooden Toy Festival
binary search
,
greedy
,
sortings
1400
x13910
1838C
No Prime Differences
constructive algorithms
,
math
,
number theory
1400
x14697
1837D
Bracket Coloring
constructive algorithms
,
greedy
1400
x15126
1833D
Flipper
brute force
,
constructive algorithms
,
greedy
1400
x13463
1830A
Copil Copac Draws Trees
dfs and similar
,
dp
,
graphs
,
trees
1400
x13837
1824A
LuoTianyi and the Show
greedy
,
implementation
1400
x11399
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x12689
1800E1
Unforgivable Curse (easy version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
strings
1400
x12995
1790E
Vlad and a Pair of Numbers
bitmasks
,
constructive algorithms
1400
x15330
1773E
Easy Assembly
greedy
,
sortings
1400
x4953
1772D
Absolute Sorting
constructive algorithms
,
math
1400
x16125
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x14708
1769B2
Копирование файлов II
*special problem
,
binary search
,
brute force
,
math
1400
x884
1764C
Doremy's City Construction
graphs
,
greedy
1400
x9472
1762C
Binary Strings are Fun
combinatorics
,
math
1400
x9250
1761C
Set Construction
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1400
x9651
1759D
Make It Round
brute force
,
number theory
1400
x13870
1758C
Almost All Multiples
greedy
,
number theory
1400
x13760
1750C
Complementary XOR
constructive algorithms
,
implementation
1400
x9608
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x14086
1748B
Diverse Substrings
brute force
,
implementation
,
strings
1400
x15138
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x11118
1735C
Phase Shift
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
1400
x9974
1733D1
Zero-One (Easy Version)
constructive algorithms
,
greedy
,
math
1400
x13601
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x16035
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x13449
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x13336
1714E
Add Modulo 10
brute force
,
math
,
number theory
1400
x16889
1706C
Qpwoeirut And The City
dp
,
flows
,
greedy
,
implementation
1400
x14992
1705C
Mark and His Unfinished Essay
brute force
,
implementation
1400
x13413
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x17347
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x14468
1696C
Fishingprince Plays With Array
constructive algorithms
,
greedy
,
implementation
,
math
1400
x11699
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x18113
1691C
Sum of Substrings
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1400
x15756
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12412
1682C
LIS or Reverse LIS?
constructive algorithms
,
greedy
,
implementation
,
math
1400
x14886
1679C
Rooks Defenders
data structures
,
implementation
1400
x10415
1676H1
Maximum Crossings (Easy Version)
brute force
1400
x14203
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x10024
←
1
2
3
4
5
→
User lists
Name