Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x2747
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2771
374A
Inna and Pink Pony
greedy
,
implementation
2000
x2844
1815B
Sum Graph
brute force
,
constructive algorithms
,
graphs
,
implementation
,
interactive
,
shortest paths
,
trees
2000
x2876
1718B
Fibonacci Strings
greedy
,
implementation
,
math
,
number theory
2000
x2894
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2964
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x2986
1951E
No Palindromes
brute force
,
constructive algorithms
,
divide and conquer
,
greedy
,
hashing
,
implementation
,
math
,
strings
2000
x3100
1685B
Linguistics
greedy
,
implementation
,
sortings
,
strings
2000
x3177
1682D
Circular Spanning Tree
constructive algorithms
,
implementation
,
trees
2000
x3187
1316D
Nash Matrix
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
2000
x3211
1956D
Nene and the Mex Operator
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
dp
,
greedy
,
implementation
,
math
2000
x3354
1427D
Unshuffling a Deck
constructive algorithms
,
implementation
2000
x3378
1943B
Non-Palindromic Substring
hashing
,
implementation
,
math
,
strings
2000
x3397
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3413
1905D
Cyclic MEX
data structures
,
implementation
,
math
,
two pointers
2000
x3543
1646D
Weight the Tree
constructive algorithms
,
dfs and similar
,
dp
,
implementation
,
trees
2000
x3561
1770D
Koxia and Game
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
flows
,
games
,
graph matchings
,
graphs
,
implementation
2000
x3686
1641B
Repetitions Decoding
constructive algorithms
,
implementation
,
sortings
2000
x3738
1237D
Balanced Playlist
binary search
,
data structures
,
implementation
2000
x3806
1301D
Time to Run
constructive algorithms
,
graphs
,
implementation
2000
x3812
1624E
Masha-forgetful
brute force
,
constructive algorithms
,
dp
,
hashing
,
implementation
,
strings
2000
x3971
1716C
Robot in a Hallway
data structures
,
dp
,
greedy
,
implementation
,
ternary search
2000
x4027
1638D
Big Brush
constructive algorithms
,
data structures
,
greedy
,
implementation
2000
x4058
1618F
Reverse
bitmasks
,
constructive algorithms
,
dfs and similar
,
implementation
,
math
,
strings
2000
x4061
1514D
Cut and Stick
binary search
,
data structures
,
greedy
,
implementation
,
sortings
2000
x4110
1408D
Searchlights
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
sortings
,
two pointers
2000
x4174
1783D
Different Arrays
brute force
,
dp
,
implementation
2000
x4216
1349C
Orac and Game of Life
dfs and similar
,
graphs
,
implementation
,
shortest paths
2000
x4242
1525C
Robot Collisions
data structures
,
greedy
,
implementation
,
sortings
2000
x4340
1574D
The Strongest Build
binary search
,
brute force
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
hashing
,
implementation
2000
x4368
1487E
Cheap Dinner
brute force
,
data structures
,
graphs
,
greedy
,
implementation
,
sortings
,
two pointers
2000
x4389
1481D
AB Graph
brute force
,
constructive algorithms
,
graphs
,
greedy
,
implementation
2000
x4405
1567D
Expression Evaluation Error
constructive algorithms
,
greedy
,
implementation
,
math
2000
x4416
1804D
Accommodation
brute force
,
dp
,
greedy
,
implementation
2000
x4442
1536D
Omkar and Medians
data structures
,
greedy
,
implementation
2000
x4567
1380D
Berserk And Fireball
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
2000
x4634
1183E
Subsequences (easy version)
dp
,
graphs
,
implementation
,
shortest paths
2000
x4651
1391D
505
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
greedy
,
implementation
2000
x4945
1388D
Captain Flint and Treasure
data structures
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
trees
2000
x6142
1200E
Compress Words
brute force
,
hashing
,
implementation
,
string suffix structures
,
strings
2000
x7069
1359D
Yet Another Yet Another Task
data structures
,
dp
,
implementation
,
two pointers
2000
x8983
1370D
Odd-Even Subsequence
binary search
,
dp
,
dsu
,
greedy
,
implementation
2000
x9161
784D
Touchy-Feely Palindromes
*special problem
,
implementation
1900
x426
38D
Vasya the Architect
implementation
1900
x478
412E
E-mail Addresses
implementation
1900
x809
928C
Dependency management
*special problem
,
graphs
,
implementation
1900
x879
784F
Crunching Numbers Just for You
*special problem
,
implementation
1900
x1001
119B
Before Exam
constructive algorithms
,
implementation
,
sortings
1900
x1067
420C
Bug in Code
data structures
,
graphs
,
implementation
,
two pointers
1900
x1222
452D
Washer, Dryer, Folder
greedy
,
implementation
1900
x1475
847I
Noise Level
dfs and similar
,
implementation
,
math
1900
x1505
285D
Permutation Sum
bitmasks
,
combinatorics
,
dp
,
implementation
,
meet-in-the-middle
1900
x1512
16D
Logging
implementation
,
strings
1900
x1516
1120A
Diana and Liana
greedy
,
implementation
,
two pointers
1900
x1622
819B
Mister B and PR Shifts
data structures
,
implementation
,
math
1900
x1624
653C
Bear and Up-Down
brute force
,
implementation
1900
x1626
362C
Insertion Sort
data structures
,
dp
,
implementation
,
math
1900
x1657
746E
Numbers Exchange
greedy
,
implementation
,
math
1900
x1711
21A
Jabber ID
implementation
,
strings
1900
x1786
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1816
356B
Xenia and Hamming
implementation
,
math
1900
x1889
1912A
Accumulator Apex
data structures
,
implementation
,
sortings
1900
x1900
404D
Minesweeper 1D
dp
,
implementation
1900
x2065
553B
Kyoya and Permutation
binary search
,
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
1900
x2097
549D
Haar Features
greedy
,
implementation
1900
x2127
353B
Two Heaps
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
1900
x2180
1054D
Changing Array
greedy
,
implementation
1900
x2217
1974F
Cutting Game
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x2358
388B
Fox and Minimal path
bitmasks
,
constructive algorithms
,
graphs
,
implementation
,
math
1900
x2441
1032D
Barcelonian Distance
geometry
,
implementation
1900
x2659
374C
Inna and Dima
dfs and similar
,
dp
,
graphs
,
implementation
1900
x2665
633C
Spy Syndrome 2
data structures
,
dp
,
hashing
,
implementation
,
sortings
,
string suffix structures
,
strings
1900
x2676
731F
Video Cards
brute force
,
data structures
,
implementation
,
math
,
number theory
1900
x2764
780D
Innokenty and a Football League
2-sat
,
graphs
,
greedy
,
implementation
,
shortest paths
,
strings
1900
x2844
1648C
Tyler and Strings
combinatorics
,
data structures
,
implementation
1900
x2873
893D
Credit Card
data structures
,
dp
,
greedy
,
implementation
1900
x2931
1277D
Let's Play the Words?
data structures
,
hashing
,
implementation
,
math
1900
x2965
1181C
Flag
brute force
,
combinatorics
,
dp
,
implementation
1900
x3009
1644E
Expand the Path
brute force
,
combinatorics
,
data structures
,
implementation
,
math
1900
x3012
1926G
Vlad and Trouble at MIT
dfs and similar
,
dp
,
flows
,
graphs
,
greedy
,
implementation
,
trees
1900
x3036
750D
New Year and Fireworks
brute force
,
data structures
,
dfs and similar
,
dp
,
implementation
1900
x3063
1714F
Build a Tree and That Is It
constructive algorithms
,
implementation
,
trees
1900
x3097
811C
Vladik and Memorable Trip
dp
,
implementation
1900
x3205
708B
Recover the String
constructive algorithms
,
greedy
,
implementation
,
math
1900
x3208
550D
Regular Bridge
constructive algorithms
,
graphs
,
implementation
1900
x3251
839B
Game of the Rows
brute force
,
greedy
,
implementation
1900
x3267
1787D
Game on Axis
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
implementation
1900
x3284
959E
Mahmoud and Ehab and the xor-MST
bitmasks
,
dp
,
graphs
,
implementation
,
math
1900
x3324
1361B
Johnny and Grandmaster
greedy
,
implementation
,
math
,
sortings
1900
x3394
1819B
The Butcher
geometry
,
greedy
,
implementation
,
sortings
,
two pointers
1900
x3448
1921F
Sum of Progression
brute force
,
data structures
,
dp
,
implementation
,
math
1900
x3494
1163C2
Power Transmission (Hard Edition)
data structures
,
geometry
,
implementation
,
math
1900
x3537
1808C
Unlucky Numbers
brute force
,
dp
,
greedy
,
implementation
1900
x3602
1950G
Shuffling Songs
bitmasks
,
dfs and similar
,
dp
,
graphs
,
hashing
,
implementation
,
strings
1900
x3617
1847D
Professor Higashikata
data structures
,
dsu
,
greedy
,
implementation
,
strings
1900
x3618
1955G
GCD on a grid
brute force
,
dfs and similar
,
dp
,
implementation
,
math
,
number theory
1900
x3647
1902D
Robot Queries
binary search
,
data structures
,
dp
,
implementation
1900
x3722
1797D
Li Hua and Tree
brute force
,
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1900
x3724
1482D
Playlist
data structures
,
dsu
,
implementation
,
shortest paths
1900
x3742
←
1
2
...
4
5
6
7
8
...
26
27
→
→ Pay attention
Before contest
Educational Codeforces Round 166 (Rated for Div. 2)
2 days
Register now »
→ Filter Problems
Difficulty:
—
implementation
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
User lists
Name