Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Educational Codeforces Round 165 (Rated for Div. 2)
24:16:37
Register now »
→ Filter Problems
Difficulty:
—
sortings
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
1529B
Sifid and Strange Subsequences
greedy
,
math
,
sortings
1100
x20321
1638B
Odd Swap Sort
data structures
,
math
,
sortings
1100
x20375
1791G1
Teleporters (Easy Version)
greedy
,
sortings
1100
x20393
1622B
Berland Music
data structures
,
greedy
,
math
,
sortings
1000
x20518
1733A
Consecutive Sum
greedy
,
sortings
800
x20644
1713B
Optimal Reduction
constructive algorithms
,
sortings
1000
x20707
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20709
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20734
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x20847
1613B
Absent Remainder
greedy
,
implementation
,
sortings
1000
x21154
1539C
Stable Groups
greedy
,
sortings
1200
x21165
1294B
Collecting Packages
implementation
,
sortings
1200
x21189
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x21192
1201C
Maximum Median
binary search
,
greedy
,
math
,
sortings
1400
x21230
1133C
Balanced Team
sortings
,
two pointers
1200
x21238
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x21558
1847A
The Man who became a God
greedy
,
sortings
800
x21634
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x21956
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x21991
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x22012
1637A
Sorting Parts
brute force
,
sortings
800
x22058
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x22147
1722D
Line
greedy
,
sortings
1100
x22164
1300B
Assigning to Classes
greedy
,
implementation
,
sortings
1000
x22184
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22401
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22421
1955B
Progressive Square
constructive algorithms
,
data structures
,
implementation
,
sortings
1000
x22489
1730A
Planets
data structures
,
greedy
,
sortings
800
x22489
1849B
Monsters
greedy
,
math
,
sortings
1000
x22531
1873E
Building an Aquarium
binary search
,
sortings
1100
x22704
1857C
Assembly via Minimums
greedy
,
sortings
1200
x22725
1557B
Moamen and k-subarrays
greedy
,
sortings
1100
x22782
1420A
Cubes Sorting
math
,
sortings
900
x22822
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x23133
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23396
1206A
Choose Two Numbers
math
,
sortings
800
x23435
1552A
Subsequence Permutation
sortings
,
strings
800
x23495
37A
Towers
sortings
1000
x23524
1419D1
Sage's Birthday (easy version)
binary search
,
constructive algorithms
,
greedy
,
sortings
1000
x23548
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x23666
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x23845
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23846
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x23923
545D
Queue
greedy
,
implementation
,
sortings
1300
x23997
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24029
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24047
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24132
1607C
Minimum Extraction
brute force
,
sortings
1000
x24278
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24333
1041A
Heist
greedy
,
implementation
,
sortings
800
x24451
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x24504
1312B
Bogosort
constructive algorithms
,
sortings
1000
x24524
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x24540
1358B
Maria Breaks the Self-isolation
greedy
,
sortings
1000
x24581
1705A
Mark the Photographer
greedy
,
sortings
800
x24792
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x24837
580B
Kefa and Company
binary search
,
sortings
,
two pointers
1500
x24848
515C
Drazil and Factorial
greedy
,
math
,
sortings
1400
x24904
1334B
Middle Class
greedy
,
sortings
1100
x25142
1833B
Restore the Weather
greedy
,
sortings
900
x25311
1697B
Promo
greedy
,
sortings
900
x25412
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x25433
1339B
Sorted Adjacent Differences
constructive algorithms
,
sortings
1200
x25521
1092B
Teams Forming
sortings
800
x25606
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x26011
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x26075
1487A
Arena
implementation
,
sortings
800
x26144
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x26649
1792A
GamingForces
greedy
,
sortings
800
x27093
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x27115
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x27314
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x27437
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x27984
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x28309
479C
Exams
greedy
,
sortings
1400
x28477
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x28525
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28690
1220A
Cards
implementation
,
sortings
,
strings
800
x28792
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29530
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31017
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x31490
1360C
Similar Pairs
constructive algorithms
,
graph matchings
,
greedy
,
sortings
1100
x31641
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x32068
977C
Less or Equal
sortings
1200
x32202
1692B
All Distinct
greedy
,
sortings
800
x32660
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32809
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32877
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x33189
1760C
Advantage
data structures
,
implementation
,
sortings
800
x34838
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35087
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36191
149A
Business trip
greedy
,
implementation
,
sortings
900
x37614
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x37624
459B
Pashmak and Flowers
combinatorics
,
implementation
,
sortings
1300
x38387
1669B
Triple
implementation
,
sortings
800
x39690
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x40138
451B
Sort the Array
implementation
,
sortings
1300
x42918
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44133
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44926
456A
Laptops
sortings
1100
x45244
←
1
2
...
8
9
10
11
→
User lists
Name