Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
ICPC Challenge
Please subscribe to the official Codeforces channel in Telegram via the link
https://t.me/codeforces_official
.
×
→ Pay attention
Before contest
2023-2024 ICPC, Asia Jakarta Regional Contest (Online Mirror, Unrated, ICPC Rules, Teams Preferred)
38:31:00
Register now »
Before contest
Educational Codeforces Round 159 (Rated for Div. 2)
2 days
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
579A
Raising Bacteria
bitmasks
1000
x51420
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x33895
1527A
And Then There Were K
bitmasks
800
x32070
1843C
Sum in Binary Tree
bitmasks
,
combinatorics
,
math
,
trees
800
x28257
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x27418
1698A
XOR Mixup
bitmasks
,
brute force
800
x26525
1559A
Mocha and Math
bitmasks
,
constructive algorithms
,
math
900
x26336
1421A
XORwice
bitmasks
,
greedy
,
math
800
x25745
1829C
Mr. Perfectly Fine
bitmasks
,
greedy
,
implementation
800
x24758
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x24263
1420B
Rock and Lever
bitmasks
,
math
1200
x21793
1635A
Min Or Sum
bitmasks
,
greedy
800
x21248
1514B
AND 0, Sum Big
bitmasks
,
combinatorics
,
math
1200
x20838
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x20515
1567B
MEXor Mixup
bitmasks
,
greedy
1000
x20272
1840B
Binary Cafe
bitmasks
,
combinatorics
,
math
1100
x19997
1688A
Cirno's Perfect Bitmasks Classroom
bitmasks
,
brute force
800
x19994
1494A
ABC String
bitmasks
,
brute force
,
implementation
900
x19972
1632B
Roof Construction
bitmasks
,
constructive algorithms
1000
x19605
1566B
MIN-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
800
x18628
1699B
Almost Ternary Matrix
bitmasks
,
constructive algorithms
,
matrices
900
x18446
1805A
We Need the Zero
bitmasks
,
brute force
800
x18398
1594B
Special Numbers
bitmasks
,
math
1100
x17939
1362B
Johnny and His Hobbies
bitmasks
,
brute force
1200
x17834
550B
Preparing Olympiad
bitmasks
,
brute force
1400
x17830
1463B
Find The Array
bitmasks
,
constructive algorithms
,
greedy
1400
x17782
1696A
NIT orz!
bitmasks
,
greedy
800
x17653
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x17641
1385D
a-Good String
bitmasks
,
brute force
,
divide and conquer
,
dp
,
implementation
1500
x17601
1688B
Patchouli's Magical Talisman
bitmasks
,
constructive algorithms
,
greedy
,
sortings
800
x17482
1516B
AGAGA XOOORRR
bitmasks
,
brute force
,
dp
,
greedy
1500
x17013
1625A
Ancient Civilization
bitmasks
,
greedy
,
math
800
x16675
1553C
Penalty
bitmasks
,
brute force
,
dp
,
greedy
1200
x16657
1566C
MAX-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
1000
x16540
1362C
Johnny and Another Rating Drop
bitmasks
,
greedy
,
math
1400
x16372
1682B
AND Sorting
bitmasks
,
constructive algorithms
,
sortings
1100
x16177
1661B
Getting Zero
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1300
x16009
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x16006
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x15327
1498B
Box Fitting
binary search
,
bitmasks
,
data structures
,
greedy
1300
x15241
1547D
Co-growing Sequence
bitmasks
,
constructive algorithms
,
greedy
1300
x15234
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x15101
1634B
Fortune Telling
bitmasks
,
math
1400
x14942
1763A
Absolute Maximization
bitmasks
,
constructive algorithms
,
greedy
,
math
800
x14774
1095C
Powers Of Two
bitmasks
,
greedy
1400
x14522
1615B
And It's Non-Zero
bitmasks
,
greedy
,
math
1300
x14477
1669H
Maximal AND
bitmasks
,
greedy
,
math
1300
x14440
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x14251
1867B
XOR Palindromes
bitmasks
,
constructive algorithms
,
strings
1100
x14191
1842B
Tenzing and Books
bitmasks
,
greedy
,
math
1100
x14134
1726B
Mainak and Interesting Sequence
bitmasks
,
constructive algorithms
,
math
1100
x14123
743B
Chloe and the sequence
binary search
,
bitmasks
,
constructive algorithms
,
implementation
1200
x13675
96B
Lucky Numbers (easy)
binary search
,
bitmasks
,
brute force
1300
x13564
1494B
Berland Crossword
bitmasks
,
brute force
,
greedy
,
implementation
1400
x13560
1630A
And Matching
bitmasks
,
constructive algorithms
1500
x13465
1270C
Make Good
bitmasks
,
constructive algorithms
,
math
1400
x13223
1395C
Boboniu and Bit Operations
bitmasks
,
brute force
,
dp
,
greedy
1600
x13131
1790E
Vlad and a Pair of Numbers
bitmasks
,
constructive algorithms
1400
x12921
1513B
AND Sequences
bitmasks
,
combinatorics
,
constructive algorithms
,
math
1400
x12851
1882B
Sets and Union
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1300
x12484
1601A
Array Elimination
bitmasks
,
greedy
,
math
,
number theory
1300
x12252
276D
Little Girl and Maximum XOR
bitmasks
,
dp
,
greedy
,
implementation
,
math
1700
x12246
1646C
Factorials and Powers of Two
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
math
1500
x12226
1554B
Cobb
bitmasks
,
brute force
,
greedy
,
math
1700
x12025
1870B
Friendly Arrays
bitmasks
,
greedy
,
math
1200
x11905
1632C
Strange Test
binary search
,
bitmasks
,
brute force
,
dp
,
math
1600
x11668
1567C
Carrying Conundrum
bitmasks
,
combinatorics
,
dp
,
math
1600
x11502
1360F
Spy-string
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
hashing
,
strings
1700
x11483
1864C
Divisor Chain
bitmasks
,
constructive algorithms
,
math
,
number theory
1300
x11362
1775B
Gardener and the Array
bitmasks
,
constructive algorithms
1300
x11346
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x11202
1325D
Ehab the Xorcist
bitmasks
,
constructive algorithms
,
greedy
,
number theory
1700
x11122
1516C
Baby Ehab Partitions Again
bitmasks
,
constructive algorithms
,
dp
,
math
1700
x11067
1368D
AND, OR and square sum
bitmasks
,
greedy
,
math
1700
x10844
912B
New Year's Eve
bitmasks
,
constructive algorithms
,
number theory
1300
x10790
484A
Bits
bitmasks
,
constructive algorithms
1700
x10254
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x10215
1659B
Bit Flipping
bitmasks
,
constructive algorithms
,
greedy
,
strings
1300
x10177
1151B
Dima and a Bad XOR
bitmasks
,
brute force
,
constructive algorithms
,
dp
1600
x9965
1614C
Divan and bitwise operations
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
math
1500
x9486
611B
New Year and Old Property
bitmasks
,
brute force
,
implementation
1300
x9322
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x9195
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x9131
1722G
Even-Odd XOR
bitmasks
,
constructive algorithms
,
greedy
1500
x9116
1703G
Good Key, Bad Key
bitmasks
,
brute force
,
dp
,
greedy
,
math
1600
x9094
437B
The Child and Set
bitmasks
,
greedy
,
implementation
,
sortings
1500
x8899
706D
Vasiliy's Multiset
binary search
,
bitmasks
,
data structures
,
trees
1800
x8755
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x8633
580D
Kefa and Dishes
bitmasks
,
dp
1800
x8626
1775C
Interesting Sequence
bitmasks
,
math
1600
x8601
1225C
p-binary
bitmasks
,
brute force
,
math
1600
x8428
1202A
You Are Given Two Binary Strings...
bitmasks
,
greedy
1100
x8386
1658D1
388535 (Easy Version)
bitmasks
,
math
1600
x8371
1152B
Neko Performs Cat Furrier Transform
bitmasks
,
constructive algorithms
,
dfs and similar
,
math
1300
x8294
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8276
1554C
Mikasa
binary search
,
bitmasks
,
greedy
,
implementation
1800
x8177
1557C
Moamen and XOR
bitmasks
,
combinatorics
,
dp
,
math
,
matrices
1700
x8026
1338B
Edge Weight Assignment
bitmasks
,
constructive algorithms
,
dfs and similar
,
greedy
,
math
,
trees
1800
x7838
1332D
Walk on Matrix
bitmasks
,
constructive algorithms
,
math
1700
x7721
242E
XOR on Segment
bitmasks
,
data structures
2000
x7693
←
1
2
3
...
5
6
→
User lists
Name