Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
42:04:53
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
constructive algorithms
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
1909H
Parallel Swaps Sort
constructive algorithms
,
data structures
3500
x54
1863I
Redundant Routes
constructive algorithms
,
dp
,
trees
3500
x66
1654H
Three Minimums
combinatorics
,
constructive algorithms
,
divide and conquer
,
dp
,
fft
,
math
3500
x68
1750H
BinaryStringForces
constructive algorithms
,
data structures
,
dp
3500
x69
1868E
Min-Sum-Max
constructive algorithms
,
dp
,
greedy
3500
x71
1446E
Long Recovery
constructive algorithms
,
dfs and similar
3500
x73
1276E
Four Stones
constructive algorithms
3500
x76
1349E
Slime and Hats
constructive algorithms
,
dp
,
greedy
3500
x80
1770H
Koxia, Mahiru and Winter Festival
constructive algorithms
3500
x85
1656I
Neighbour Ordering
constructive algorithms
,
graphs
3500
x92
1704G
Mio and Lucky Array
constructive algorithms
,
fft
,
math
,
strings
3500
x94
1685D2
Permutation Weight (Hard Version)
constructive algorithms
,
greedy
3500
x98
1718E
Impressionism
constructive algorithms
,
graphs
,
implementation
,
math
3500
x101
1827F
Copium Permutation
constructive algorithms
,
data structures
,
greedy
3500
x103
1924F
Anti-Proxy Attendance
constructive algorithms
,
dp
,
interactive
,
ternary search
3500
x115
1586I
Omkar and Mosaic
combinatorics
,
constructive algorithms
,
math
3500
x121
1503F
Balance the Cards
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
3500
x124
1774H
Maximum Permutation
constructive algorithms
3500
x127
1707F
Bugaboo
bitmasks
,
constructive algorithms
,
dp
,
number theory
3500
x137
1534H
Lost Nodes
constructive algorithms
,
dp
,
graphs
,
interactive
,
sortings
,
trees
3500
x141
1919G
Tree LGM
constructive algorithms
,
divide and conquer
,
games
,
trees
3500
x143
1053E
Euler tour
constructive algorithms
,
trees
3500
x188
1815F
OH NO1 (-2-3-4)
constructive algorithms
,
graphs
,
math
3500
x208
1687E
Become Big For Me
combinatorics
,
constructive algorithms
,
greedy
,
math
,
number theory
3500
x208
1270I
Xor on Figures
constructive algorithms
,
fft
,
math
3500
x222
1292E
Rin and The Unknown Flower
constructive algorithms
,
greedy
,
interactive
,
math
3500
x321
1267C
Cactus Revenge
constructive algorithms
3500
x377
1264F
Beautiful Fibonacci Problem
constructive algorithms
,
number theory
3500
x802
1280F
Intergalactic Sliding Puzzle
combinatorics
,
constructive algorithms
,
math
3400
x54
1580E
Railway Construction
brute force
,
constructive algorithms
,
data structures
,
graphs
,
shortest paths
3400
x63
1078E
Negative Time Summation
constructive algorithms
3400
x85
1887F
Minimum Segments
constructive algorithms
3400
x107
1205F
Beauty of a Permutation
constructive algorithms
,
math
3400
x119
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x152
1684H
Hard Cut
constructive algorithms
,
dfs and similar
,
divide and conquer
,
math
3400
x228
1827E
Bus Routes
binary search
,
constructive algorithms
,
dfs and similar
,
greedy
,
trees
3400
x348
1710D
Recover the Tree
constructive algorithms
,
trees
3400
x403
1097E
Egor and an RPG game
constructive algorithms
,
greedy
3400
x452
1912C
Cactus Transformation
constructive algorithms
3300
x42
737F
Dirty plates
constructive algorithms
,
math
3300
x68
1930H
Interactive Mex Tree
constructive algorithms
,
dfs and similar
,
interactive
,
trees
3300
x98
1737F
Ela and Prime GCD
constructive algorithms
,
math
,
number theory
3300
x114
1530G
What a Reversal
constructive algorithms
3300
x122
1615G
Maximum Adjacent Pairs
constructive algorithms
,
graph matchings
3300
x145
1060H
Sophisticated Device
constructive algorithms
3300
x201
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x210
1054G
New Road Network
constructive algorithms
,
greedy
,
math
3300
x248
1495F
Squares
constructive algorithms
,
data structures
,
dp
,
graphs
,
trees
3300
x273
1237H
Balanced Reversals
constructive algorithms
3300
x297
1148G
Gold Experience
constructive algorithms
,
graphs
,
math
,
number theory
,
probabilities
3300
x311
1375H
Set Merging
constructive algorithms
,
divide and conquer
3300
x382
1517G
Starry Night Camping
constructive algorithms
,
flows
,
graphs
3300
x407
923F
Public Service
constructive algorithms
,
graphs
,
trees
3200
x69
1267H
Help BerLine
constructive algorithms
3200
x99
1566H
Xor-quiz
constructive algorithms
,
dp
,
interactive
,
math
,
number theory
3200
x104
1045E
Ancient civilizations
constructive algorithms
,
geometry
3200
x117
1242E
Planar Perimeter
constructive algorithms
,
graphs
3200
x126
1704H1
Game of AI (easy version)
combinatorics
,
constructive algorithms
,
dp
,
fft
,
math
3200
x166
933E
A Preponderant Reunion
constructive algorithms
,
dp
3200
x184
1781G
Diverse Coloring
constructive algorithms
,
trees
3200
x211
1896G
Pepe Racing
constructive algorithms
,
implementation
,
interactive
,
sortings
3200
x221
1656G
Cycle Palindrome
constructive algorithms
,
graphs
,
math
3200
x264
543E
Listening to Music
constructive algorithms
,
data structures
3200
x271
1672G
Cross Xor
constructive algorithms
,
graphs
,
math
,
matrices
3200
x307
1396E
Distance Matching
constructive algorithms
,
dfs and similar
,
trees
3200
x316
1774G
Segment Covering
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
trees
3200
x323
1336D
Yui and Mahjong Set
constructive algorithms
,
interactive
3200
x449
611H
New Year and Forgotten Tree
constructive algorithms
,
flows
,
graphs
3200
x574
1025G
Company Acquisitions
constructive algorithms
,
math
3200
x580
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x597
1762G
Unequal Adjacent Elements
constructive algorithms
,
sortings
3100
x95
720C
Homework
constructive algorithms
3100
x96
317E
Princess and Her Shadow
constructive algorithms
,
shortest paths
3100
x150
1740G
Dangerous Laser Power
constructive algorithms
,
dsu
,
sortings
3100
x176
331E2
Deja Vu
constructive algorithms
,
dp
3100
x215
1286F
Harry The Potter
brute force
,
constructive algorithms
,
dp
,
fft
,
implementation
,
math
3100
x228
715D
Create a Maze
constructive algorithms
3100
x231
1864G
Magic Square
combinatorics
,
constructive algorithms
,
implementation
3100
x238
1882E2
Two Permutations (Hard Version)
constructive algorithms
3100
x261
830E
Perpetual Motion Machine
constructive algorithms
,
dp
,
graphs
,
implementation
,
math
,
trees
3100
x269
1508E
Tree Calendar
brute force
,
constructive algorithms
,
data structures
,
dfs and similar
,
sortings
,
trees
3100
x321
1566G
Four Vertices
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
shortest paths
3100
x323
1887E
Good Colorings
binary search
,
constructive algorithms
,
graphs
,
interactive
3100
x325
1329D
Dreamoon Likes Strings
constructive algorithms
,
data structures
3100
x334
1168E
Xor Permutations
constructive algorithms
,
math
3100
x346
1119G
Get Ready for the Battle
constructive algorithms
,
implementation
3100
x405
804E
The same permutation
constructive algorithms
3100
x405
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x438
1225G
To Make 1
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
number theory
3100
x520
1110G
Tree-Tac-Toe
constructive algorithms
,
games
,
trees
3100
x571
1070M
Algoland and Berland
constructive algorithms
,
divide and conquer
,
geometry
3000
x63
457E
Flow Optimality
constructive algorithms
,
flows
,
math
3000
x80
1218G
Alpha planetary system
constructive algorithms
,
graphs
,
shortest paths
3000
x83
1934E
Weird LCM Operations
brute force
,
constructive algorithms
,
number theory
3000
x145
1758F
Decent Division
constructive algorithms
,
data structures
3000
x150
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x237
1868D
Flower-like Pseudotree
constructive algorithms
,
graphs
,
greedy
,
implementation
,
trees
3000
x241
1526F
Median Queries
constructive algorithms
,
interactive
,
probabilities
3000
x247
1838F
Stuck Conveyor
binary search
,
constructive algorithms
,
interactive
3000
x287
1779G
The Game of the Century
constructive algorithms
,
graphs
,
shortest paths
3000
x299
←
1
2
3
...
16
17
→
User lists
Name