Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 954 (Div. 3)
3 days
Register now »
→ Filter Problems
Difficulty:
—
data structures
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
1340F
Nastya and CBS
brute force
,
data structures
,
hashing
3300
x480
1336F
Journey
data structures
,
divide and conquer
,
graphs
,
trees
3500
x202
1332G
No Monotone Triples
data structures
3100
x291
1329D
Dreamoon Likes Strings
constructive algorithms
,
data structures
3100
x383
1322E
Median Mountain Range
data structures
3300
x297
1320E
Treeland and Viruses
data structures
,
dfs and similar
,
dp
,
shortest paths
,
trees
3000
x750
1316F
Battalion Strength
data structures
,
divide and conquer
,
probabilities
2800
x715
1313E
Concatenation with intersection
data structures
,
hashing
,
strings
,
two pointers
2700
x523
1303G
Sum of Prefix Sums
data structures
,
divide and conquer
,
geometry
,
trees
2700
x744
1290E
Cartesian Tree
data structures
3300
x518
1286E
Fedya the Potter Strikes Back
data structures
,
strings
3200
x492
1286D
LCC
data structures
,
math
,
matrices
,
probabilities
3100
x563
1284F
New Year and Social Network
data structures
,
graph matchings
,
graphs
,
math
,
trees
3200
x315
1270H
Number of Components
data structures
3300
x596
1260F
Colored Tree
data structures
,
trees
2700
x488
1254D
Tree Queries
data structures
,
probabilities
,
trees
2700
x1173
1252D
Find String in a Grid
data structures
,
dp
,
strings
,
trees
3000
x330
1238G
Adilbek and the Watering System
data structures
,
greedy
,
sortings
2700
x399
1237G
Balanced Distribution
data structures
,
dp
,
greedy
3500
x121
1220F
Gardener Alex
binary search
,
data structures
2700
x670
1218B
Guarding warehouses
data structures
,
geometry
3000
x70
1214G
Feeling Good
bitmasks
,
data structures
3200
x284
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x138
1209G2
Into Blocks (hard version)
data structures
3200
x395
1208H
Red Blue Tree
data structures
,
implementation
,
trees
3500
x145
1207G
Indie Album
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
2700
x975
1182F
Maximum Sine
binary search
,
data structures
,
number theory
2700
x332
1179D
Fedor Runs for President
data structures
,
dp
,
trees
2700
x789
1178G
The Awesomest Vertex
data structures
,
dfs and similar
3000
x420
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x442
1172F
Nauuo and Bug
data structures
3300
x417
1172E
Nauuo and ODT
data structures
3300
x292
1163F
Indecisive Taxi Fee
data structures
,
graphs
,
shortest paths
3000
x830
1149C
Tree Generator™
data structures
,
implementation
,
trees
2700
x1183
1148H
Holy Diver
data structures
3500
x250
1140G
Double Tree
data structures
,
divide and conquer
,
shortest paths
,
trees
2700
x470
1137F
Matches Are Not a Child's Play
data structures
,
trees
3400
x465
1137E
Train Car Selection
data structures
,
greedy
2700
x497
1131G
Most Dangerous Shark
data structures
,
dp
,
two pointers
2700
x404
1129D
Isolation
data structures
,
dp
2900
x962
1120F
Secret Letters
data structures
,
dp
,
greedy
3100
x251
1119F
Niyaz and Small Degrees
data structures
,
dp
,
trees
3400
x684
1109F
Sasha and Algorithm of Silence's Sounds
data structures
,
trees
3200
x288
1109E
Sasha and a Very Easy Test
data structures
,
number theory
2700
x496
1109C
Sasha and a Patient Friend
binary search
,
data structures
,
implementation
2800
x249
1098D
Eels
data structures
2800
x712
1088F
Ehab and a weird weight formula
data structures
,
trees
2800
x495
1085G
Beautiful Matrix
combinatorics
,
data structures
,
dp
2900
x508
1083F
The Fair Nut and Amusing Xor
data structures
3300
x267
1083D
The Fair Nut's getting crazy
data structures
,
implementation
3500
x230
1083C
Max Mex
data structures
,
trees
2900
x852
1081H
Palindromic Magic
data structures
,
hashing
,
strings
3500
x100
1076G
Array Game
data structures
,
games
3000
x461
1063F
String Journey
data structures
,
dp
,
string suffix structures
3300
x810
1060G
Balls and Pockets
data structures
3400
x145
1056H
Detect Robots
data structures
,
strings
3200
x149
1056G
Take Metro
brute force
,
data structures
,
graphs
2900
x245
1051G
Distinctification
data structures
,
dsu
,
greedy
2900
x380
1044F
DFS
data structures
2700
x510
1043G
Speckled Band
data structures
,
divide and conquer
,
hashing
,
string suffix structures
,
strings
3500
x217
1039E
Summer Oenothera Exhibition
data structures
3400
x267
1039D
You Are Given a Tree
data structures
,
dp
,
trees
2800
x1663
1037H
Security
data structures
,
string suffix structures
3200
x996
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x435
1023G
Pisces
data structures
,
flows
,
trees
3400
x114
1019E
Raining season
data structures
,
divide and conquer
,
trees
3200
x331
1017G
The Tree
data structures
3200
x843
1010E
Store
data structures
2700
x323
1007D
Ants
2-sat
,
data structures
,
trees
3200
x258
1000G
Two-Paths
data structures
,
dp
,
trees
2700
x568
997E
Good Subsegments
data structures
3000
x1098
986E
Prince's Problem
brute force
,
data structures
,
math
,
number theory
,
trees
2800
x708
983E
NN country
binary search
,
data structures
,
trees
2800
x890
983D
Arkady and Rectangles
data structures
3300
x364
981H
K Paths
combinatorics
,
data structures
,
dp
,
fft
,
math
3100
x268
962G
Visible Black Areas
data structures
,
dsu
,
geometry
,
trees
2800
x126
960H
Santa's Gift
data structures
,
trees
3100
x258
938G
Shortest Path Queries
bitmasks
,
data structures
,
dsu
,
graphs
2900
x864
936E
Iqea
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
shortest paths
,
trees
3400
x185
932F
Escape Through Leaf
data structures
,
dp
,
geometry
2700
x2696
930E
Coins Exhibition
data structures
,
dp
,
math
2900
x411
925E
May Holidays
data structures
,
trees
2900
x374
917E
Upside Down
data structures
,
string suffix structures
,
strings
,
trees
3400
x123
914F
Substrings in a String
bitmasks
,
brute force
,
data structures
,
string suffix structures
,
strings
3000
x1469
903G
Yet Another Maxflow Problem
data structures
,
flows
,
graphs
2700
x514
896E
Welcome home, Chtholly
data structures
,
dsu
3100
x2017
878C
Tournament
data structures
,
graphs
2700
x893
870F
Paths
data structures
,
number theory
2700
x601
862F
Mahmoud and Ehab and the final stage
data structures
,
strings
2900
x198
860E
Arkady and a Nobody-men
data structures
,
dfs and similar
,
trees
2700
x426
855F
Nagini
binary search
,
data structures
3100
x426
853E
Lada Malina
data structures
,
geometry
3400
x65
833E
Caramel Clouds
data structures
,
dp
,
sortings
3400
x217
833D
Red-Black Cobweb
data structures
,
divide and conquer
,
implementation
,
trees
2800
x387
827F
Dirty Arkady's Kitchen
data structures
,
dp
,
graphs
,
shortest paths
3200
x388
827D
Best Edge Weight
data structures
,
dfs and similar
,
graphs
,
trees
2700
x1076
815D
Karen and Cards
binary search
,
combinatorics
,
data structures
,
geometry
2800
x599
809D
Hitchhiking in the Baltic States
data structures
,
dp
2900
x779
802O
April Fools' Problem (hard)
binary search
,
data structures
,
flows
2900
x858
799G
Cut the pie
binary search
,
data structures
,
geometry
3500
x111
←
1
2
3
4
5
→
User lists
Name