Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
09:10:54
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
1808A
Lucky Numbers
brute force
,
implementation
900
x18444
1807D
Odd Queries
data structures
,
implementation
900
x34071
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x30766
1807B
Grab the Candies
greedy
800
x42640
1807A
Plus or Minus
implementation
800
x63795
1806B
Mex Master
constructive algorithms
,
greedy
900
x17919
1806A
Walking Master
geometry
,
greedy
,
math
800
x25630
1805B
The String Has a Target
greedy
,
strings
800
x18721
1805A
We Need the Zero
bitmasks
,
brute force
800
x24280
1804B
Vaccination
greedy
,
implementation
1000
x14333
1804A
Lame King
greedy
,
math
800
x18014
1802B
Settlement of Guinea Pigs
greedy
,
implementation
,
math
1000
x13429
1802A
Likes
greedy
,
implementation
800
x15937
1800C1
Powering the Hero (easy version)
data structures
,
greedy
1000
x23987
1800B
Count the Number of Pairs
greedy
,
strings
1000
x25435
1800A
Is It a Cat?
implementation
,
strings
800
x31833
1799A
Recent Actions
data structures
,
greedy
,
implementation
,
math
800
x11641
1798B
Three Sevens
brute force
,
data structures
,
greedy
,
implementation
1000
x16793
1798A
Showstopper
greedy
,
implementation
,
sortings
800
x19952
1797A
Li Hua and Maze
constructive algorithms
,
flows
,
graphs
,
greedy
,
implementation
800
x17594
1796B
Asterisk-Minor Template
implementation
,
strings
1000
x16652
1796A
Typical Interview Problem
brute force
,
implementation
,
strings
800
x18903
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x22196
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23704
1794B
Not Dividing
constructive algorithms
,
greedy
,
math
900
x23170
1794A
Prefix and Suffix Array
strings
800
x17248
1793A
Yet Another Promotion
greedy
,
math
800
x18124
1792A
GamingForces
greedy
,
sortings
800
x28352
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x31573
1791C
Prepend and Append
implementation
,
two pointers
800
x46915
1791B
Following Directions
geometry
,
implementation
800
x45065
1791A
Codeforces Checking
implementation
,
strings
800
x62210
1790C
Premutation
brute force
,
implementation
,
math
1000
x24205
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x27580
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x37392
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x16287
1789A
Serval and Mocha's Array
brute force
,
math
,
number theory
800
x19603
1788A
One and Two
brute force
,
implementation
,
math
800
x31777
1787A
Exponential Equation
constructive algorithms
,
math
800
x19285
1786A2
Alternating Deck (hard version)
implementation
800
x11466
1786A1
Non-alternating Deck (easy version)
implementation
800
x14097
1784A
Monsters (easy version)
brute force
,
greedy
1000
x15279
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x30960
1781B
Going to the Cinema
brute force
,
greedy
,
sortings
1000
x13586
1781A
Parallel Projection
geometry
,
math
800
x15143
1780A
Hayato and School
constructive algorithms
,
greedy
800
x21785
1779B
MKnez's ConstructiveForces Task
constructive algorithms
,
math
900
x23719
1779A
Hall of Fame
constructive algorithms
,
greedy
,
strings
800
x23218
1778A
Flip Flop Sum
greedy
,
implementation
800
x24495
1777B
Emordnilap
combinatorics
,
greedy
,
math
900
x17637
1777A
Everybody Likes Good Arrays!
greedy
,
math
800
x25161
1776A
Walking Boy
greedy
800
x7045
1775A2
Gardener and the Capybaras (hard version)
constructive algorithms
,
greedy
900
x18852
1775A1
Gardener and the Capybaras (easy version)
brute force
,
constructive algorithms
,
implementation
800
x19741
1774A
Add Plus Minus Sign
constructive algorithms
,
math
800
x22523
1773F
Football
constructive algorithms
800
x4191
1772C
Different Differences
constructive algorithms
,
greedy
,
math
1000
x23997
1772B
Matrix Rotation
brute force
,
implementation
800
x29476
1772A
A+B?
implementation
800
x48941
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x23114
1770B
Koxia and Permutation
constructive algorithms
1000
x19481
1770A
Koxia and Whiteboards
brute force
,
greedy
1000
x23662
1769B1
Копирование файлов I
*special problem
,
brute force
,
implementation
,
math
1000
x1378
1769A
Узкая дорога
*special problem
,
math
800
x1972
1768B
Quick Sort
greedy
,
math
900
x23291
1768A
Greatest Convex
greedy
,
math
,
number theory
800
x29076
1767B
Block Towers
data structures
,
greedy
,
sortings
800
x20466
1767A
Cut the Triangle
implementation
800
x20649
1766B
Notepad#
implementation
1000
x21286
1766A
Extremely Round
brute force
,
implementation
800
x27357
1765M
Minimum LCM
math
,
number theory
1000
x16284
1765E
Exchange
brute force
,
math
1000
x10210
1765B
Broken Keyboard
greedy
800
x9103
1764B
Doremy's Perfect Math Class
math
,
number theory
900
x15999
1764A
Doremy's Paint
greedy
800
x16673
1763A
Absolute Maximization
bitmasks
,
constructive algorithms
,
greedy
,
math
800
x15768
1762A
Divide and Conquer
greedy
,
math
,
number theory
800
x19300
1761B
Elimination of a Ring
constructive algorithms
,
greedy
,
implementation
1000
x13516
1761A
Two Permutations
brute force
,
constructive algorithms
800
x20285
1760D
Challenging Valleys
implementation
,
two pointers
1000
x23935
1760C
Advantage
data structures
,
implementation
,
sortings
800
x37765
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x45239
1760A
Medium Number
implementation
,
sortings
800
x61165
1759B
Lost Permutation
math
800
x22345
1759A
Yes-Yes?
implementation
,
strings
800
x30272
1758B
XOR = Average
constructive algorithms
900
x21429
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x25333
1754B
Kevin and Permutation
constructive algorithms
,
greedy
,
math
800
x18981
1754A
Technical Support
greedy
800
x23357
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x16275
1750A
Indirect Sort
constructive algorithms
,
implementation
,
math
800
x17110
1749B
Death's Blessing
greedy
900
x21089
1749A
Cowardly Rooks
greedy
,
implementation
800
x22399
1748A
The Ultimate Square
math
800
x24173
1747B
BAN BAN
constructive algorithms
900
x23153
1747A
Two Groups
constructive algorithms
,
greedy
800
x25046
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x17267
1746A
Maxmina
constructive algorithms
,
greedy
800
x19885
1744C
Traffic Light
binary search
,
implementation
,
two pointers
1000
x28125
1744B
Even-Odd Increments
implementation
,
math
800
x23612
←
1
2
3
4
5
6
...
15
16
→
User lists
Name