Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
When submitting a solution in C++, please select either C++14 (GCC 6-32) or C++17 (GCC 7-32) as your compiler.
×
→ Pay attention
Before contest
Codeforces Round 935 (Div. 3)
01:05:57
Register now »
→ Filter Problems
Difficulty:
—
bitmasks
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
1948G
MST with Matching
bitmasks
,
brute force
,
dsu
,
trees
x266
1944B
Equal XOR
bitmasks
,
constructive algorithms
x11283
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x319
1936A
Bitwise Operation Wizard
bitmasks
,
constructive algorithms
,
greedy
,
interactive
,
math
1700
x5858
1935E
Distance Learning Courses in MAC
bitmasks
,
brute force
,
data structures
,
greedy
,
math
2400
x932
1934D2
XOR Break --- Game Version
bitmasks
,
games
,
greedy
,
interactive
2400
x1018
1934D1
XOR Break --- Solo Version
bitmasks
,
constructive algorithms
,
greedy
2100
x2708
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
,
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
math
2300
x745
1930F
Maximize the Difference
bitmasks
,
brute force
,
dfs and similar
2700
x539
1930D2
Sum over all Substrings (Hard Version)
bitmasks
,
divide and conquer
,
dp
,
dsu
,
greedy
,
implementation
,
strings
2100
x2193
1929E
Sasha and the Happy Tree Cutting
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
2300
x1359
1926F
Vlad and Avoiding X
bitmasks
,
brute force
,
dfs and similar
,
dp
,
implementation
2200
x1275
1926E
Vlad and an Odd Ordering
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
,
math
,
number theory
1500
x8719
1926D
Vlad and Division
bitmasks
,
greedy
1300
x12163
1922E
Increasing Subsequences
bitmasks
,
constructive algorithms
,
divide and conquer
,
greedy
,
math
1800
x6714
1918C
XOR-distance
bitmasks
,
greedy
,
implementation
,
math
1400
x11907
1917F
Construct Tree
bitmasks
,
constructive algorithms
,
dp
,
trees
2500
x847
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x36712
1915A
Odd One Out
bitmasks
,
implementation
800
x46503
1913C
Game with Multiset
binary search
,
bitmasks
,
brute force
,
greedy
1300
x12962
1912K
Kim's Quest
bitmasks
,
combinatorics
,
dp
1800
x1773
1909E
Multiple Lamps
bitmasks
,
brute force
,
constructive algorithms
,
math
,
number theory
2400
x1191
1909B
Make Almost Equal With Mod
bitmasks
,
constructive algorithms
,
math
,
number theory
1200
x12857
1906B
Button Pressing
bitmasks
,
constructive algorithms
,
hashing
2600
x420
1903D2
Maximum And Queries (hard version)
bitmasks
,
divide and conquer
,
dp
,
greedy
2500
x666
1903D1
Maximum And Queries (easy version)
binary search
,
bitmasks
,
brute force
,
greedy
1700
x4811
1903B
StORage room
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1200
x10871
1900D
Small GCD
bitmasks
,
brute force
,
dp
,
math
,
number theory
2000
x3494
1895D
XOR Construction
bitmasks
,
constructive algorithms
,
data structures
,
math
,
string suffix structures
,
trees
1900
x5350
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1285
1883E
Look Back
bitmasks
,
greedy
1700
x6579
1882D
Tree XOR
bitmasks
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x4713
1882B
Sets and Union
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1300
x13912
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x6300
1878G
wxhtzdy ORO Tree
binary search
,
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
implementation
,
trees
2300
x1053
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x10441
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x10440
1874B
Jellyfish and Math
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
shortest paths
2400
x1026
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x11377
1870E
Another MEX Problem
bitmasks
,
brute force
,
dp
,
shortest paths
2300
x2149
1870B
Friendly Arrays
bitmasks
,
greedy
,
math
1200
x12995
1868B2
Candy Party (Hard Version)
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
implementation
,
math
2100
x2233
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6250
1867B
XOR Palindromes
bitmasks
,
constructive algorithms
,
strings
1100
x15390
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2427
1864C
Divisor Chain
bitmasks
,
constructive algorithms
,
math
,
number theory
1300
x12320
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x972
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x5461
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x140
1856E2
PermuTree (hard version)
bitmasks
,
dfs and similar
,
dp
,
fft
,
greedy
,
implementation
,
math
,
trees
2700
x1286
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3244
1851F
Lisa and the Martians
bitmasks
,
greedy
,
math
,
strings
,
trees
1800
x5091
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x609
1848F
Vika and Wiki
binary search
,
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
2400
x1405
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x834
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x11930
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x18694
1846G
Rudolf and CodeVid-23
bitmasks
,
dp
,
graphs
,
greedy
,
shortest paths
1900
x3905
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x625
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x30279
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x526
1842B
Tenzing and Books
bitmasks
,
greedy
,
math
1100
x15075
1840B
Binary Cafe
bitmasks
,
combinatorics
,
math
1100
x21142
1835F
Good Graph
bitmasks
,
dfs and similar
,
graph matchings
,
graphs
,
implementation
3500
x123
1835C
Twin Clusters
bitmasks
,
brute force
,
constructive algorithms
,
math
,
probabilities
2600
x913
1829H
Don't Blame Me
bitmasks
,
combinatorics
,
dp
,
math
1700
x6772
1829C
Mr. Perfectly Fine
bitmasks
,
greedy
,
implementation
800
x26454
1826E
Walk the Runway
bitmasks
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
2400
x1461
1815D
XOR Counting
bitmasks
,
combinatorics
,
dp
,
math
2600
x979
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x17125
1805A
We Need the Zero
bitmasks
,
brute force
800
x19885
1804H
Code Lock
bitmasks
,
dp
3300
x167
1804E
Routing
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x1330
1801A
The Very Beautiful Blanket
bitmasks
,
constructive algorithms
1600
x7931
1800F
Dasha and Nightmares
bitmasks
,
hashing
,
meet-in-the-middle
,
strings
1900
x3574
1799H
Tree Cutting
bitmasks
,
dfs and similar
,
dp
3200
x266
1795G
Removal Sequences
bitmasks
,
dfs and similar
,
graphs
2700
x635
1792D
Fixed Prefix Permutations
binary search
,
bitmasks
,
data structures
,
hashing
,
math
,
sortings
1700
x5747
1790E
Vlad and a Pair of Numbers
bitmasks
,
constructive algorithms
1400
x13867
1789F
Serval and Brain Power
bitmasks
,
brute force
,
dp
,
greedy
,
implementation
,
strings
2700
x501
1789D
Serval and Shift-Shift-Shift
bitmasks
,
brute force
,
constructive algorithms
,
implementation
2200
x1538
1788F
XOR, Tree, and Queries
bitmasks
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
trees
2500
x751
1787E
The Harmonization of XOR
bitmasks
,
constructive algorithms
,
greedy
,
math
2100
x2136
1780F
Three Chairs
bitmasks
,
brute force
,
combinatorics
,
data structures
,
dp
,
number theory
,
sortings
2300
x1343
1780D
Bit Guessing Game
binary search
,
bitmasks
,
constructive algorithms
,
interactive
1800
x4558
1779F
Xorcerer's Stones
bitmasks
,
constructive algorithms
,
dp
,
trees
2500
x1202
1778E
The Tree Has Fallen!
bitmasks
,
dfs and similar
,
math
,
trees
2500
x781
1778C
Flexible String
bitmasks
,
brute force
,
strings
1600
x7474
1777F
Comfortably Numb
bitmasks
,
data structures
,
divide and conquer
,
strings
,
trees
2400
x792
1777D
Score of a Tree
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
math
,
probabilities
,
trees
1900
x3134
1775C
Interesting Sequence
bitmasks
,
math
1600
x9350
1775B
Gardener and the Array
bitmasks
,
constructive algorithms
1300
x11985
1773G
Game of Questions
bitmasks
,
combinatorics
,
dp
,
fft
,
math
,
probabilities
2800
x303
1771F
Hossam and Range Minimum Query
binary search
,
bitmasks
,
data structures
,
hashing
,
probabilities
,
strings
,
trees
2500
x930
1770F
Koxia and Sequence
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
3100
x571
1767E
Algebra Flash
bitmasks
,
brute force
,
dp
,
graphs
,
math
,
meet-in-the-middle
,
trees
2500
x810
1765A
Access Levels
bitmasks
,
dsu
,
flows
,
graph matchings
2400
x646
1763A
Absolute Maximization
bitmasks
,
constructive algorithms
,
greedy
,
math
800
x15057
1760G
SlavicG's Favorite Problem
bitmasks
,
dfs and similar
,
graphs
1700
x6666
1748F
Circular Xor Reversal
bitmasks
,
constructive algorithms
3000
x317
←
1
2
3
...
5
6
→
User lists
Name