Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Rayan
→ Pay attention
Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
3 days
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
723B
Text Document Analysis
expression parsing
,
implementation
,
strings
1100
x10214
722B
Verse Pattern
implementation
,
strings
1200
x6512
722A
Broken Clock
brute force
,
implementation
1300
x6649
721B
Passwords
implementation
,
math
,
sortings
,
strings
1100
x12108
719A
Vitya in the Countryside
implementation
1100
x15560
717C
Potions Homework
implementation
,
sortings
1200
x3964
716B
Complete the Word
greedy
,
two pointers
1300
x12247
714B
Filya and Homework
implementation
,
sortings
1200
x14578
714A
Meeting of Old Friends
implementation
,
math
1100
x10801
712B
Memory and Trident
implementation
,
strings
1100
x9784
708A
Letters Cyclic Shift
constructive algorithms
,
greedy
,
implementation
,
strings
1200
x9020
707B
Bakery
graphs
1300
x12994
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x64638
705B
Spider Man
games
,
math
1100
x9179
701B
Cells Not Under Attack
data structures
,
math
1200
x11802
690F1
Tree of Life (easy)
1300
x2174
690D1
The Wall (easy)
1200
x2625
690C1
Brain Network (easy)
1300
x2783
690A1
Collective Mindsets (easy)
1100
x2879
686B
Little Robber Girl's Zoo
constructive algorithms
,
implementation
,
sortings
1100
x7807
683A
The Check of the Point
*special problem
,
geometry
1200
x800
682B
Alyona and Mex
sortings
1200
x11571
682A
Alyona and Numbers
constructive algorithms
,
math
,
number theory
1100
x21872
681B
Economy Game
brute force
1300
x8985
675A
Infinite Sequence
math
1100
x14999
673B
Problems for Round
greedy
,
implementation
1300
x3524
670C
Cinema
implementation
,
sortings
1300
x9210
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5639
667A
Pouring Rain
geometry
,
math
1100
x8057
665C
Simple Strings
dp
,
greedy
,
strings
1300
x10667
661A
Lazy Caterer Sequence
*special problem
1300
x638
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x9056
659C
Tanya and Toys
greedy
,
implementation
1200
x11507
659B
Qualifying Contest
constructive algorithms
,
sortings
1300
x6303
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x5018
651B
Beautiful Paintings
greedy
,
sortings
1200
x11612
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x23056
648C
Путь Робота
constructive algorithms
,
dfs and similar
,
graphs
1100
x1035
645B
Mischievous Mess Makers
greedy
,
math
1200
x3412
645A
Amity Assessment
brute force
,
constructive algorithms
,
implementation
1200
x3551
639A
Bear and Displayed Friends
implementation
1200
x6162
638A
Home Numbers
*special problem
,
constructive algorithms
,
math
1100
x4050
637B
Chat Order
*special problem
,
binary search
,
constructive algorithms
,
data structures
,
sortings
1200
x17135
635A
Orchestra
brute force
,
implementation
1100
x2924
634A
Island Puzzle
constructive algorithms
,
implementation
1300
x3329
633B
A Trivial Problem
brute force
,
constructive algorithms
,
math
,
number theory
1300
x6717
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12874
632A
Grandma Laura and Apples
1200
x4611
631B
Print Check
constructive algorithms
,
implementation
1200
x7446
630R
Game
games
,
math
1200
x8728
630N
Forecast
math
1300
x4741
630J
Divisibility
math
,
number theory
1100
x11220
630F
Selection of Personnel
combinatorics
,
math
1300
x6957
630D
Hexagons!
math
1100
x11108
630C
Lucky Numbers
combinatorics
,
math
1100
x22348
630B
Moore's Law
math
1200
x7466
629B
Far Relative’s Problem
brute force
1100
x8057
628C
Bear and String Distance
greedy
,
strings
1300
x5871
628B
New Skateboard
dp
1300
x10910
626B
Cards
constructive algorithms
,
dp
,
math
1300
x6634
625C
K-special Tables
constructive algorithms
,
implementation
1300
x6840
625B
War of the Corporations
constructive algorithms
,
greedy
,
strings
1200
x10472
624B
Making a String
greedy
,
sortings
1100
x8000
621B
Wet Shark and Bishops
combinatorics
,
implementation
1300
x11070
618B
Guess the Permutation
constructive algorithms
1100
x8001
617B
Chocolate
combinatorics
1300
x18113
612B
HDD is Outdated Technology
implementation
,
math
1200
x7128
612A
The Text Splitting
brute force
,
implementation
,
strings
1300
x7299
611B
New Year and Old Property
bitmasks
,
brute force
,
implementation
1300
x10168
610B
Vika and Squares
constructive algorithms
,
implementation
1300
x7319
609B
The Best Gift
constructive algorithms
,
implementation
1100
x9208
606A
Magic Spheres
implementation
1200
x8000
602A
Two Bases
brute force
,
implementation
1100
x8524
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x30577
598B
Queries on a String
implementation
,
strings
1300
x11237
596B
Wilbur and Array
greedy
,
implementation
1100
x10381
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7763
593A
2Char
brute force
,
implementation
1200
x5810
592B
The Monster and the Squirrel
math
1100
x8639
592A
PawnChess
implementation
1200
x6361
591B
Rebranding
implementation
,
strings
1200
x8255
588B
Duff in Love
math
1300
x14155
586B
Laurenty and Shop
implementation
1300
x5154
583B
Robot's Task
greedy
,
implementation
1200
x8736
581B
Luxurious Houses
implementation
,
math
1100
x13097
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5263
574A
Bear and Elections
greedy
,
implementation
1200
x9100
573A
Bear and Poker
implementation
,
math
,
number theory
1300
x16744
572B
Order Book
data structures
,
greedy
,
implementation
,
sortings
1300
x7008
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x16206
570A
Elections
implementation
1100
x13914
569B
Inventory
greedy
,
math
1200
x7113
567B
Berland National Library
implementation
1300
x8455
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x7948
558B
Amr and The Large Array
implementation
1300
x7874
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10398
557A
Ilya and Diplomas
greedy
,
implementation
,
math
1100
x8273
556B
Case of Fake Numbers
brute force
,
implementation
1100
x7944
554B
Ohana Cleans Up
brute force
,
greedy
,
strings
1200
x10008
552B
Vanya and Books
implementation
,
math
1200
x15443
←
1
2
...
7
8
9
10
11
12
13
→
User lists
Name