Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Rayan
→ Pay attention
Before contest
European Championship 2025 - Online Mirror (Unrated, ICPC Rules, Teams Preferred)
23:09:42
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
1537A
Arithmetic Array
greedy
,
math
800
x38283
1536A
Omkar and Bad Story
brute force
,
constructive algorithms
800
x20322
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x31361
1535A
Fair Playoff
brute force
,
implementation
800
x51693
1534A
Colour the Flag
brute force
,
implementation
800
x12844
1530B
Putting Plates
constructive algorithms
,
implementation
800
x15911
1530A
Binary Decimal
greedy
,
math
800
x21247
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x30090
1527A
And Then There Were K
bitmasks
800
x37013
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x24423
1525B
Permutation Sort
constructive algorithms
,
greedy
900
x25310
1525A
Potion-making
math
,
number theory
800
x26049
1523A
Game of Life
implementation
800
x13575
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x45868
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x53697
1519B
The Cake Is a Lie
dp
,
math
800
x31490
1519A
Red and Blue Beans
math
800
x29358
1517A
Sum of 2050
greedy
,
math
800
x25961
1516A
Tit for Tat
greedy
800
x23756
1515A
Phoenix and Gold
constructive algorithms
,
greedy
,
math
800
x20484
1514A
Perfectly Imperfect Array
math
,
number theory
800
x24498
1513A
Array and Peaks
constructive algorithms
,
implementation
800
x19517
1512B
Almost Rectangle
implementation
800
x25722
1512A
Spy Detected!
brute force
,
implementation
800
x67890
1511A
Review Site
greedy
800
x27982
1509A
Average Height
constructive algorithms
800
x26244
1506A
Strange Table
math
800
x31017
1505A
Is it rated - 2
*special problem
,
implementation
,
interactive
900
x14892
1504A
Déjà Vu
constructive algorithms
,
strings
800
x22034
1501B
Napoleon Cake
dp
,
implementation
,
sortings
900
x19606
1501A
Alexey and Train
implementation
800
x11696
1499A
Domino on Windowsill
combinatorics
,
constructive algorithms
,
math
800
x21408
1498A
GCD Sum
brute force
,
math
800
x23611
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x24753
1496A
Split it!
brute force
,
constructive algorithms
,
greedy
,
strings
900
x21323
1494A
ABC String
bitmasks
,
brute force
,
implementation
900
x21164
1493A
Anti-knapsack
constructive algorithms
,
greedy
800
x19442
1492A
Three swimmers
math
800
x22900
1491A
K-th Largest Value
brute force
,
greedy
,
implementation
800
x18419
1490A
Dense Array
greedy
,
math
800
x31560
1488A
From Zero To Y
*special problem
,
math
900
x1570
1487A
Arena
implementation
,
sortings
800
x26830
1486A
Shifting Stacks
greedy
,
implementation
900
x25804
1482A
Prison Break
math
800
x20683
1481A
Space Navigation
greedy
,
strings
800
x25194
1480B
The Great Hero
greedy
,
implementation
,
sortings
900
x17385
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x26228
1478A
Nezzar and Colorful Balls
brute force
,
greedy
800
x26850
1475B
New Year's Number
brute force
,
dp
,
math
900
x51127
1475A
Odd Divisor
math
,
number theory
900
x66345
1474A
Puzzle From the Future
greedy
800
x22735
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x34420
1472B
Fair Division
dp
,
greedy
,
math
800
x53298
1472A
Cards for Friends
greedy
,
math
800
x42985
1471A
Strange Partition
greedy
,
math
,
number theory
900
x28127
1468N
Waste Sorting
greedy
,
implementation
900
x8378
1468E
Four Segments
greedy
800
x9300
1467A
Wizard of Orz
constructive algorithms
,
greedy
,
math
900
x24652
1466B
Last minute enhancements
dp
,
greedy
800
x22926
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22762
1462C
Unique Number
brute force
,
greedy
,
math
900
x33615
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x27792
1462A
Favorite Sequence
implementation
,
two pointers
800
x43571
1461A
String Generation
constructive algorithms
,
greedy
800
x18677
1459A
Red-Blue Shuffle
math
,
probabilities
800
x17143
1455A
Strange Functions
math
,
number theory
800
x26717
1454B
Unique Bid Auction
implementation
800
x28946
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x41435
1453A
Cancel the Trains
implementation
800
x22887
1452C
Two Brackets
greedy
800
x19992
1452A
Robot Program
math
800
x22310
1451B
Non-Substring Subsequence
dp
,
greedy
,
implementation
,
strings
900
x19495
1451A
Subtract or Divide
greedy
,
math
800
x24484
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x18092
1447A
Add Candies
constructive algorithms
,
math
800
x14005
1445B
Elimination
greedy
,
math
900
x15483
1445A
Array Rearrangment
greedy
,
sortings
800
x19208
1443A
Kids Seating
constructive algorithms
,
math
800
x16343
1440B
Sum of Medians
greedy
,
math
900
x20490
1440A
Buy the String
implementation
,
math
800
x19932
1438A
Specific Tastes of Andre
constructive algorithms
,
implementation
800
x19444
1437A
Marketing Scheme
brute force
,
constructive algorithms
,
greedy
,
math
800
x18106
1436B
Prime Square
constructive algorithms
,
math
900
x20940
1436A
Reorder
math
800
x22907
1433C
Dominant Piranha
constructive algorithms
,
greedy
900
x27443
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x28889
1433A
Boring Apartments
implementation
,
math
800
x55015
1431A
Selling Hamburgers
*special problem
800
x1962
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19593
1430A
Number of Apartments
brute force
,
constructive algorithms
,
math
900
x21125
1428A
Box is Pull
math
800
x16430
1427A
Avoiding Zero
math
,
sortings
900
x17456
1426B
Symmetric Matrix
implementation
900
x20907
1426A
Floor Number
implementation
,
math
800
x49917
1422A
Fence
geometry
,
math
800
x21139
1421A
XORwice
bitmasks
,
greedy
,
math
800
x30765
1420A
Cubes Sorting
math
,
sortings
900
x23887
1419A
Digit Game
games
,
greedy
,
implementation
900
x19775
1417A
Copy-paste
greedy
,
math
800
x18374
1415A
Prison Break
brute force
,
math
800
x15330
←
1
2
...
5
6
7
8
9
...
12
13
→
User lists
Name