Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 972 (Div. 2)
41:55:23
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
1703B
ICPC Balloons
data structures
,
implementation
800
x48512
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x68163
1702B
Polycarp Writes a String from Memory
greedy
800
x27530
1702A
Round Down the Price
constructive algorithms
800
x34637
1701B
Permutation
greedy
800
x20165
1701A
Grass Field
implementation
800
x26206
1700A
Optimal Path
constructive algorithms
,
greedy
,
math
800
x22822
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23946
1698B
Rising Sand
constructive algorithms
,
greedy
,
implementation
800
x20885
1698A
XOR Mixup
bitmasks
,
brute force
800
x28862
1697A
Parkway Walk
greedy
,
implementation
800
x25692
1696A
NIT orz!
bitmasks
,
greedy
800
x18702
1695A
Subrectangle Guess
games
800
x16314
1694A
Creep
greedy
,
implementation
800
x22598
1692C
Where's the Bishop?
implementation
800
x33753
1692B
All Distinct
greedy
,
sortings
800
x33951
1692A
Marathon
implementation
800
x64199
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x30417
1690C
Restoring the Duration of Tasks
data structures
,
greedy
,
implementation
800
x26039
1690B
Array Decrements
greedy
,
implementation
800
x25254
1690A
Print a Pedestal (Codeforces logo?)
constructive algorithms
,
greedy
800
x33363
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16736
1688B
Patchouli's Magical Talisman
bitmasks
,
constructive algorithms
,
greedy
,
sortings
800
x18233
1688A
Cirno's Perfect Bitmasks Classroom
bitmasks
,
brute force
800
x21549
1686B
Odd Subarrays
dp
,
greedy
800
x18224
1686A
Everything Everywhere All But One
greedy
800
x20463
1684B
Z mod X = C
constructive algorithms
,
math
800
x20918
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23793
1682A
Palindromic Indices
greedy
,
strings
800
x19243
1681B
Card Trick
implementation
,
math
800
x20059
1681A
Game with Cards
games
,
greedy
800
x20937
1680B
Robots
implementation
800
x18278
1680A
Minimums and Maximums
brute force
,
math
800
x21520
1678B1
Tokitsukaze and Good 01-String (easy version)
implementation
800
x15889
1678A
Tokitsukaze and All Zero Sequence
implementation
800
x18119
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x29953
1676B
Equal Candies
greedy
,
math
,
sortings
800
x47856
1676A
Lucky?
implementation
800
x62742
1675A
Food for Animals
greedy
,
math
800
x32813
1674B
Dictionary
combinatorics
,
math
800
x26183
1674A
Number Transformation
constructive algorithms
,
math
800
x26185
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18415
1672B
I love AAAB
constructive algorithms
,
implementation
800
x15775
1672A
Log Chopping
games
,
implementation
,
math
800
x16039
1671A
String Building
implementation
800
x20419
1670A
Prof. Slim
greedy
,
implementation
,
sortings
800
x15393
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x34418
1669B
Triple
implementation
,
sortings
800
x42726
1669A
Division?
implementation
800
x62040
1668A
Direction Change
implementation
,
math
800
x16278
1665A
GCD vs LCM
constructive algorithms
,
math
800
x23503
1661A
Array Balancing
greedy
,
math
800
x18324
1660B
Vlad and Candies
math
800
x28019
1660A
Vasya and Coins
greedy
,
math
800
x35847
1658B
Marin and Anti-coprime Permutation
combinatorics
,
math
,
number theory
800
x18552
1658A
Marin and Photoshoot
constructive algorithms
,
implementation
,
math
800
x20290
1657B
XY Sequence
greedy
800
x22769
1657A
Integer Moves
brute force
,
math
800
x23942
1656A
Good Pairs
math
,
sortings
800
x19560
1654B
Prefix Removals
strings
800
x15593
1654A
Maximum Cake Tastiness
brute force
,
greedy
,
implementation
,
sortings
800
x18618
1651B
Prove Him Wrong
constructive algorithms
,
greedy
800
x19510
1651A
Playoff
implementation
800
x25631
1650A
Deletions of Two Adjacent Letters
implementation
,
strings
800
x34593
1649A
Game
implementation
800
x15502
1647A
Madoka and Math Dad
implementation
,
math
800
x22718
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x21112
1646A
Square Counting
math
800
x24230
1644B
Anti-Fibonacci Permutation
brute force
,
constructive algorithms
,
implementation
800
x20643
1644A
Doors and Keys
implementation
800
x27303
1642A
Hard Way
geometry
800
x16151
1638A
Reverse
constructive algorithms
,
greedy
,
math
800
x21430
1637A
Sorting Parts
brute force
,
sortings
800
x22260
1635B
Avoid Local Maximums
greedy
800
x17915
1635A
Min Or Sum
bitmasks
,
greedy
800
x22811
1634A
Reverse and Concatenate
greedy
,
strings
800
x23840
1633B
Minority
greedy
800
x27692
1633A
Div. 7
brute force
800
x32880
1632A
ABC
implementation
800
x29388
1631A
Min Max Swap
greedy
800
x29021
1629B
GCD Arrays
greedy
,
math
,
number theory
800
x23331
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28942
1627A
Not Shading
constructive algorithms
,
implementation
800
x23981
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x28704
1625A
Ancient Civilization
bitmasks
,
greedy
,
math
800
x17176
1624A
Plus One on the Subset
math
800
x51553
1623A
Robot Cleaner
brute force
,
implementation
,
math
800
x20013
1622A
Construct a Rectangle
geometry
,
math
800
x29958
1621A
Stable Arrangement of Rooks
constructive algorithms
800
x23733
1620A
Equal or Not Equal
constructive algorithms
,
dsu
,
implementation
800
x21539
1619B
Squares and Cubes
implementation
,
math
800
x30668
1619A
Square String?
implementation
,
strings
800
x50895
1618B
Missing Bigram
implementation
800
x22577
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x32200
1617A
Forbidden Subsequence
constructive algorithms
,
greedy
,
sortings
,
strings
800
x16252
1616A
Integer Diversity
implementation
800
x22663
1615A
Closing The Gap
greedy
,
math
800
x20719
1614A
Divan and a Store
brute force
,
constructive algorithms
,
greedy
800
x23227
1612A
Distance
brute force
,
constructive algorithms
800
x17635
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x29387
←
1
2
3
4
5
6
...
8
9
→
User lists
Name