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!)
28:04:25
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
dp
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
1470E
Strange Permutation
binary search
,
combinatorics
,
data structures
,
dp
,
graphs
,
implementation
,
two pointers
3200
x289
1774G
Segment Covering
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
trees
3200
x323
1393E2
Twilight and Ancient Scroll (harder version)
dp
,
hashing
,
implementation
,
string suffix structures
,
strings
,
two pointers
3200
x337
1746E2
Joking (Hard Version)
dp
,
interactive
3200
x359
1519F
Chests and Keys
bitmasks
,
brute force
,
dfs and similar
,
dp
,
flows
3200
x373
827F
Dirty Arkady's Kitchen
data structures
,
dp
,
graphs
,
shortest paths
3200
x378
1603E
A Perfect Problem
combinatorics
,
dp
,
math
3200
x387
1517F
Reunion
combinatorics
,
dp
,
trees
3200
x418
750G
New Year and Binary Tree Paths
bitmasks
,
brute force
,
combinatorics
,
dp
3200
x437
613E
Puzzle Lover
dp
,
hashing
,
strings
3200
x451
1326F2
Wise Men (Hard Version)
bitmasks
,
dp
,
math
3200
x453
1608F
MEX counting
combinatorics
,
dp
,
implementation
3200
x507
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x518
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x568
1621G
Weighted Increasing Subsequences
data structures
,
dp
,
math
3200
x609
1810G
The Maximum Prefix
dp
3200
x612
585F
Digits of Number Pi
dp
,
implementation
,
strings
3200
x632
755G
PolandBall and Many Other Balls
combinatorics
,
divide and conquer
,
dp
,
fft
,
math
,
number theory
3200
x832
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x40
662E
To Hack or not to Hack
brute force
,
dp
,
greedy
3100
x129
379G
New Year Cactus
dp
3100
x137
1895G
Two Characters, Two Colors
binary search
,
data structures
,
dp
,
flows
,
greedy
3100
x166
891D
Sloth
dfs and similar
,
dp
,
graph matchings
,
trees
3100
x166
1930G
Prefix Max Set Counting
data structures
,
dp
,
trees
3100
x193
1761F1
Anti-median (Easy Version)
dp
,
math
3100
x193
720D
Slalom
data structures
,
dp
,
sortings
3100
x193
331E2
Deja Vu
constructive algorithms
,
dp
3100
x215
1286F
Harry The Potter
brute force
,
constructive algorithms
,
dp
,
fft
,
implementation
,
math
3100
x228
1120F
Secret Letters
data structures
,
dp
,
greedy
3100
x240
513G3
Inversions problem
dp
3100
x247
981H
K Paths
combinatorics
,
data structures
,
dp
,
fft
,
math
3100
x258
830E
Perpetual Motion Machine
constructive algorithms
,
dp
,
graphs
,
implementation
,
math
,
trees
3100
x271
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x287
468E
Permanent
dp
,
graph matchings
,
math
,
meet-in-the-middle
3100
x304
1815E
Bosco and Particle
dp
,
math
,
number theory
,
strings
3100
x315
1439D
INOI Final Contests
combinatorics
,
dp
,
fft
3100
x336
1067D
Computer Game
dp
,
greedy
,
math
,
probabilities
3100
x346
1647F
Madoka and Laziness
dp
,
greedy
3100
x373
1349F1
Slime and Sequences (Easy Version)
dp
,
fft
,
math
3100
x390
1103D
Professional layer
bitmasks
,
dp
3100
x393
1481F
AB Tree
dp
,
greedy
,
trees
3100
x443
626G
Raffles
data structures
,
dp
,
greedy
,
math
3100
x511
1225G
To Make 1
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
number theory
3100
x521
1463F
Max Correct Set
bitmasks
,
dp
,
math
3100
x541
1383C
String Transformation 2
bitmasks
,
dp
,
graphs
,
trees
3100
x549
1770F
Koxia and Sequence
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
3100
x581
1503E
2-Coloring
combinatorics
,
dp
,
math
3100
x584
1188D
Make Equal
dp
3100
x658
1239E
Turtle
dp
,
implementation
3100
x887
708E
Student's Camp
dp
,
math
3100
x913
852H
Bob and stages
dp
,
geometry
3000
x142
156E
Mrs. Hudson's Pancakes
brute force
,
dp
3000
x159
1250D
Conference Problem
dp
3000
x164
251E
Tree and Table
dfs and similar
,
dp
,
implementation
,
trees
3000
x167
280E
Sequence Transformation
brute force
,
data structures
,
dp
,
implementation
,
math
3000
x191
533D
Landmarks
data structures
,
dp
3000
x214
1569F
Palindromic Hamiltonian Path
brute force
,
dfs and similar
,
dp
,
graphs
,
hashing
3000
x224
1474F
1 2 3 4 ...
dp
,
math
,
matrices
3000
x231
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x237
1874E
Jellyfish and Hack
dp
,
math
3000
x241
1252D
Find String in a Grid
data structures
,
dp
,
strings
,
trees
3000
x259
1572E
Polygon
binary search
,
dp
,
geometry
3000
x263
778E
Selling Numbers
dp
,
sortings
3000
x294
303E
Random Ranking
dp
,
math
,
probabilities
3000
x301
1776M
Parmigiana With Seafood
binary search
,
dp
,
greedy
,
trees
3000
x320
936D
World of Tank
dp
,
greedy
3000
x320
1168D
Anagram Paths
dp
,
implementation
,
trees
3000
x331
436F
Banners
brute force
,
data structures
,
dp
3000
x348
1854E
Game Bundles
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
3000
x372
264E
Roadside Trees
data structures
,
dp
3000
x393
375E
Red and Black Tree
dp
,
implementation
,
math
3000
x395
356E
Xenia and String Problem
dp
,
hashing
,
implementation
,
string suffix structures
,
strings
3000
x396
1299D
Around the World
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
graphs
,
graphs
,
math
,
trees
3000
x407
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x410
1763F
Edge Queries
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
trees
3000
x411
771E
Bear and Rectangle Strips
dp
,
greedy
3000
x437
1381D
The Majestic Brown Tree Snake
dfs and similar
,
dp
,
greedy
,
trees
,
two pointers
3000
x441
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x442
335F
Buy One, Get One Free
dp
,
greedy
3000
x453
453D
Little Pony and Elements of Harmony
dp
,
matrices
3000
x456
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x472
1534F2
Falling Sand (Hard Version)
dfs and similar
,
dp
,
graphs
,
greedy
3000
x497
793F
Julia the snail
data structures
,
divide and conquer
,
dp
3000
x498
889E
Mod Mod Mod
binary search
,
dp
,
math
3000
x511
1028G
Guess the number
dp
,
interactive
3000
x522
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x532
1442E
Black, White and Grey Tree
binary search
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
3000
x545
1707D
Partial Virtual Trees
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
3000
x550
568E
Longest Increasing Subsequence
data structures
,
dp
3000
x570
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x579
1428G2
Lucky Numbers (Hard Version)
dp
,
greedy
3000
x594
1603D
Artistic Partition
divide and conquer
,
dp
,
number theory
3000
x598
1476F
Lanterns
binary search
,
data structures
,
dp
3000
x600
1667E
Centroid Probabilities
combinatorics
,
dp
,
fft
,
math
3000
x609
1320E
Treeland and Viruses
data structures
,
dfs and similar
,
dp
,
shortest paths
,
trees
3000
x611
1149D
Abandoning Roads
brute force
,
dp
,
graphs
,
greedy
3000
x640
1097G
Vladislav and a Great Legend
combinatorics
,
dp
,
trees
3000
x647
1342F
Make It Ascending
bitmasks
,
brute force
,
dp
3000
x654
1392H
ZS Shuffles Cards
combinatorics
,
dp
,
math
,
probabilities
3000
x659
232E
Quick Tortoise
bitmasks
,
divide and conquer
,
dp
3000
x660
←
1
2
3
4
...
19
20
→
User lists
Name